VITAMIN D3 DERIVATIVES

Abstract: A compound of formula (I) in which formula Q is a C1-C6 hydrocarbylene diradical; Y is either a single bond, a carbonyl group or a methylene, ethylene, -CH(OH)-, -O-(C6H4)- (ortho, meta, para) or -S-(C6H4)- (ortho, meta, para) diradical; R<1> and R<2>, which may be the same or different, stand for hydrogen or a C1-C6 hydrocarbyl radical; or R<1> and R<2>, when taken together with the carbon atom (starred in formula I) bearing the group Z, can form a C3-C6 carbocyclic ring; and Z is hydrogen or hydroxy; with the proviso that when, at the same time, Q is ethylene, Y is methylene, R<1> and R<2> stand for methyl or trifluoromethyl, and Z is hydroxy, or when, at the same time, Q is ethylene, Y stands for carbonyl or -CH(OH)-, R<1> and R<2> are methyl, and Z is hydroxy, then the configuration at C-20 cannot be <u>E</u>. The compounds show anti-inflammatory and immunomodulating effects as well as strong activity in inducing differentiation and inhibiting undesirable proliferation of certain cells.

Description: VITAMIN D3 DERIVATIVES This invention relates to a hitherto unknown class of compounds which shows strong activity in inducing differentiation and inhibiting undesirable proliferation of certain cells, including cancer cells and skin cells, as well as anti- inflammatory and immunomodulating effects, to pharmaceutical preparations con- taining these compounds, to dosage units of such preparations, and to their use in the treatment and prophylaxis of hyperparathyroidism, particularly secondary hyperparathyroidism associated with renal failure, of diseases characterized by abnormal cell differentiation and/or cell proliferation such as cancer, leukemia, myelofibrosis, and psoriasis, of a number of disease states including diabetes mellitus, hypertension, acne, alopecia, skin ageing, AIDS, neurodegenerative disorders such as Alzheimer's disease, host versus graft reactions, rejection of transplants, inflammatory diseases such as rheumatoid arthritis and asthma, for prevention and/or treatment of steroid induced skin atrophy, and for promoting osteogenesis and treating osteoporosis. The compounds of the present invention are represented by the general formula I in which formula Q is a - Cg hydrocarbylene diradical; Y is either a single bond, a carbonyl group or a methylene, ethylene, -CH(OH)-, - XC H^- (ortho, meta, 1 2 para) or -S- C h^)- (ortho, meta, para) diradical; R and R , which may be the same or different, stand for hydrogen or a C^-Cg hydrocarbyl radical; or R and R , when taken together with the carbon atom (starred in formula I) bearing the group Z, can form a CyC^ carbocyclic ring; and Z is hydrogen or hydroxy; with the proviso that when, at the same time, Q is ethylene, Y is methylene, R and R stand for methyl or trifluoromethyl, and Z is hydroxy, or when, at the same time, Q 1 is ethylene, Y stands for carbonyl or -CH(OH)-, R and R are methyl, and Z is hydroxy, then the configuration at C-20 cannot be R. In the context of this invention, the expression hydrocarbyl radical (hydrocarbylene diradical) indicates the residue after the removal of 1 (2) hydrogen atom(s) from a straight, branched or cyclic, saturated or unsaturated hydrocarbon. Examples of Q include, but are not limited to, methylene, ethylene, tri-, tetra- and pentamethylene, -CH=CH-, -CH=CH-CH =CH- -CH=CH-C≡C-, -CH=CH-CH 2 -, -CH 2 -(C 6 H 4 )- (ortho, meta, para), -C≡C- , -C≡C-CH 2 -, -CH(R)-(CH 2 ) 2 -, -CH(R)-CH=CH-, and -CH(R)-C≡C- in which R is hydroxy, C1 -C4 alkoxy or C^ -C alkyl. Compounds of formula I in which Q is -(CH 2 ) n -, n being an integer from 1 to 4, or stands for a straight carbon chain with one or two, in the latter case conjugated, double or triple bonds or for -CH( R )-C≡C-, R being defined as above, are of particular interest. 1 Examples of R and R when taken separately include, but are not limited to, hydrogen, methyl, ethyl, vinyl, normal-, iso- and cyclopropyl, and trifluoromethyl. 1 Examples of and R and R when taken together include di- tri-, tetra- and pentamethylene. The compounds of the invention comprise more than one stereoisomeric form (e.g., R or S configuration at C-20; E or Z configuration when a double bond is present in the group Q). The invention covers all these stereoisomers in pure form as well as mixture thereof. In addition, prodrugs of I in which one or more of the hydroxy groups are masked as groups which can be reconverted to hydroxy groups in vivo are also within the scope of the invention. Compounds of formula I in which Z is hydrogen also may act as prodrugs, as these compounds are relatively inactive in vitro, but are converted to active compounds of formula I by enzymatic hydroxylation after administration to the patient. It has been shown that 1 α,25-dihydroxy-vitamin D 3 (1 ,25(OH) 2 D3) influences the effects and/or production of interleukins (Muller, K. et al., Immunol. Lett., λ l_, 361 -366 (1988)), indicating the potential use of this compound in the treatment of diseases characterized by a dysfunction of the immune system, e.g. autoimmune diseases, AIDS, host versus graft reactions, and rejection of transplants or other conditions characterized by an abnormal interleukin-1 production, e.g. inflammatory diseases such as rheumatoid arthritis and asthma. It has also been shown that 1 ,25(OH) 2 D3 is able to stimulate the differentiation of cells and inhibit excessive cell proliferation (Abe, E. et al., Proc. Natl. Acad. Sci., U.S.A., 78, 4990-4994 (1981 )), and it has been suggested that this compound might be useful in the treatment of diseases characterized by abnormal cell proliferation and/or cell differentiation such as leukemia, myelofibrosis and psoriasis. Also, the use of 1 ,25(OH) 2 D3, or its pro-drug 1 α-OH-D 3 , for the treatment of hypertension (Lind, L. et al., Ada Med. Scand., 222. 423-427 (1 987)) and diabetes mellitus (Inomata, S. et al., Bone Mineral., 1, 187-192 (1 986)) has been suggested. Another indication for 1 ,25(OH) 2 D 3 is suggested by the recent observation of an association between hereditary vitamin D resistance and alopecia: treatment with 1 ,25(OH) 2 D 3 may promote hair growth (Editorial, Lancet, March 4, p. 478 (1 989)). Also, the fact that topical application of 1 ,25(OH) 2 D 3 reduces the size of sebaceous glands in the ears of male Syrian hamsters suggests that this compound might be useful for the treatment of acne (Malloy V.L. et al., The Triconti- nental Meeting for Investigative Dermatology, Washington, (1 989)). However, the therapeutic possibilities in such indications are severely limited by the well known potent effect of 1 ,25(OH) 2 D 3 on calcium metabolism; elevated blood concentrations will rapidly give rise to hypercalcemia. Thus, this compound and some of its potent synthetic analogues are not completely satisfactory for use as drugs in the treatment of e.g. psoriasis, leukemia or immune diseases which may require continuous administration of the drug in relatively high doses. A number of vitamin D analogues have recently been described that show some degree of selectivity in favour of the cell differentiation inducing/cell proliferation inhibiting activity in vitro as compared with the effects on calcium metabolism in vivo (as measured in increased serum calcium concentration and/or increased urinary calcium excretion), which adversely limit the dosage that can safely be administered. One of the first of these to appear, calcipotriol (INN) or calcipotriene (USAN), has been developed on the basis of this selectivity and is now recognized worldwide as an effective and safe drug for the topical treatment of psoriasis. A study with another analogue (EB 1089) selected on this basis supports the concept that systemically administered vitamin D analogues may inhibit breast cancer cell proliferation in vivo at sub-toxic doses (Colston, K.VV. et al., Biochem. Pharmacol. 44, 2273-2280 (1992) and Mathiasen, I.S. et al., /. Steroid Biochem. Molec. Biol., 46, 365-371 (1 993)). Promising immunosuppressive activities of vitamin D analogues have been reviewed (Binderup, L, Biochem. Pharmacol. 43, 1885-1892 (1992)). Thus, a series of 20-epi-vitamin D analogues has been identified as potent inhibitors of T- lymphocyte activation in vitro (Binderup, L. et al, Biochem. Pharmacol. 42, 1 569- 1 575 (1991 )). Two of these analogues, MC 1288 and KH 1060, systemically administered, have shown immunosuppressive activities in vivo in experimental animal models. Additive or synergistic effects were observed in combination with low-dose cyclosporin A. KH 1060, alone or in combination with cyclosporin A, has also been shown to prevent autoimmune destruction of transplanted islets in diabetic NOD mice (Bouillon, R. et al. In: Vitamin D, a Pluripotent Steroid Hormone: Structural Studies, Molecular Endocrinology and Clinical Applications; Norman, A.W., Bouillon, R., Thomasset, M., Eds.; de Gruyter, Berlin, 1994, pp. 551 -552). MC 1288 was able to prolong survival of cardiac and small bowel grafts in rats (johnsson, C. et al. In: Vitamin D, a Pluripotent Steroid Hormone: Structural Studies, Molecular Endocrinology and Clinical Applications; Norman, A.W., Bouillon, R., Thomasset, M., Eds.; de Gruyter, Berlin, 1994, pp. 549-550). How- ever, in all these studies, the dosages of the analogues that produced significant immunosuppression also induced increases in serum calcium levels. There is therefore a continuing need for new analogues with an acceptable combination of prolonged therapeutic activity and minimum toxic effects. The compounds of the present invention provide a hitherto undisclosed series of 16-dehydro-1 α,25-dihydroxy-vitamin D 3 analogues with potent immunosuppressive and cell proliferation inhibitory activities. The compounds of formula I are characterized by the presence of a 16,1 7-double bond in the five-membered ring D, and their absolute configuration at C-20 can be either R or S. Analogues of vitamin D having a 16,1 7-double bond in ring D are not new. For example, Hoffmann-La Roche Inc. in US Patents No. 5,087,619/1992 and No. 5,145,846/1992 disclose the synthesis and use of 25-hydroxy- and 1 α,25-di- hydroxy-16-ene-cholecalciferols, their 23-ene and 23-yne analogues as well as corresponding 26,26,26,27,27,27-hexafluoro derivatives. Uskokovic, M.R. et al. describe the synthesis and biological activities of 16-ene analogues of 1 ,25-di- hydroxycholecalciferol (In: Vitamin D: Gene Regulation, Structure-Function Analysis and Clinical Application; Norman, A.W., Bouillon, R., Thomasset, M., Eds.; de Gruyter, Berlin, 1991 , pp. 139-145). Hoffmann-La Roche A.G. in European Patent Application No. 0580968/1993 disclose the synthesis and use of 26,26, 26, 27,27,27-hexafluoro analogues of 25-hydroxy-, 1 α,25-dihydroxy-, and 1 a-fluoro-25-hydroxy-16-ene-23-yne-cholecalciferols and their corresponding 19-nor derivatives. McLane, J.A. et al. describe stable and active metabolites of 1 ,25-dihydroxy-1 6-ene-cholecalciferol (US Patent No. 5,401 ,733/1995). However, it should be noted that these and other prior art 16-dehydro-vitamin D 3 compounds are characterized by the presence of the natural vitamin D configuration of the C-20 methyl group. Furthermore, all possess as the rest of the side chain (the other substituent on C-20) the aliphatic six-carbon skeleton of the natural vitamin D 3 side chain. Finally, these compounds contain optionally a 23,24-double or triple bond. The compounds of the present invention differ from the prior art 16-dehydro-vitamin D 3 analogues in the skeleton of the C-20 side chain which is not restricted to being either aliphatic or six-carbon, and in the location of the optional double or triple bond(s) which is/are not restricted to being between carbon atoms 23 and 24. In addition, the configuration at C-20 can be either R (the natural vitamin D configuration) or S. In order to demonstrate the effectiveness of the compounds of formula I, the information of Table A is referred to: "HaCaT, rel.", "MLR, rel.", and "Calc, rel."; the meaning of which is explained in the following. A useful assay for the rating of test compounds for antiproliferative activity in skin cells, e.g. antipsoriatic effect, is the in vitro assay using HaCaT, a spontaneously immortalized, non-tumorigenic human skin keratinocyte cell line (Mørk Hansen, C. et al., /. Invest. Dermatol. _, 44-48 (1996)), measuring ^H -thymidine uptake. An in vitro assay for the rating of test compounds for immunosuppressive potency is the mixed lymphocyte reaction assay, "MLR", measuring the allogeneic stimulation of mouse spleen lymphocytes: lymphocytes, obtained from the spleens of BALB/c and CB6F1 mice, are stimulated by co-cultivating 5x10"/ml cells from BALB/c mice (responders) with 7.5x1 o ml cells from CB6F1 mice (inducers). The mixed cultures of lymphocytes are incubated with the test compounds for 72 hours. Cellular DNA-synthesis is assessed by the incorporation of ^H-thymidine in the DNA. Generally, the classical effects of 1 ,25(OH) 2 D on the calcium balance in the organism, including calcemic and calciuric activities, are unwanted in the vitamin D analogues of the present invention, in which selectivity for e.g. inhibition of the proliferation of certain cells and/or immunosuppressive activity is normally desired. The calcemic activity of the compounds was determined in rats in vivo, as previously described (Binderup, L., Bramm, E., Biochem. Pharmacol. 3_7, 889-895 (1 988)). In Table A, column "Calc, rel.", the calcemic activities of selected compounds (relative to 1 ,25(OH) 2 D 3 ) are listed; as mentioned, low values for the compounds of the present invention are ordinarily preferred. It appears from Table A that the selected Compounds 107 and 1 1 1 are considerably more potent than 1 ,25(OH) 2 D in the HaCaT-assay (psoriasis model), while the calcemic activity is similar to that of 1 ,25(OH) 2 D 3 . Concerning the other important property of the compounds of the invention, their immunosuppressive activity, it is apparent from Table A, column "MLR, rel.", that the selected Compounds 107 and 1 1 1 have potent effects. Table A: Biological Tests of Compounds I and Reference Compounds Notes to Table A * The rest of the molecule is the same as in formula I. ** The values are relative to 1 ,25(OH) 2 D 3 ; a value greater than 1 indicates a compound which is more active than 1 ,25(OH) D 3 in the assay, α Calculated as the ratio between the IC5Q value of 1 ,25(OH) D 3 and the IC50 value of the compound, the IC5Q being the concentration which results in 50% inhibition of the ^H-thymidine incorporation compared to controls. # 1 ,25 = 1 ,25(OH) 2 D 3 = 1 ,25(OH) 2 -vitamin-D 3 . n.d. = not determined. Ref. = Reference compound The compounds of formula I may be prepared from the C-20 epimeric alcohols 3_ and 4, a synthesis of which from the vitamin D-derived aldehyde 1 (Calverley, M.J., Tetrahedron, 43, 4609-4619 (1987)) via the 20-keto compound 2 has been reported (Hansen, K. et al. In: Vitamin D: Gene Regulation, Structure- Function Analysis and Clinical Application; Norman, A.W., Bouillon, R., Thomasset, M., Eds.; de Gruyter, Berlin, 1991 , pp. 161 -162), for example by the general methods of Schemes 1 and 2. More specifically, the preparation of the 16-dehydro tosylates 13/14 and the analogous aldehydes 15/16, important intermediates in the synthesis of the compounds of formula I from said starting materials, is outlined in Scheme 1 , whereas the further conversion of the above key intermediates to the compounds of formula I is outlined in Scheme 2. The synthesis of the side chain building blocks V to VIII, or analogues thereof, may be performed by standard procedures described in the literature/International Patent Applications Nos. WO 87/00834, WO 89/10351 , WO 91/00271 , WO 91/00855, WO 91/1 5475, WO 93/19044, and WO 95/02577. The following standard abbreviations are used throughout this disclosure:DMF = N,N-dimethylformamide; DMSO = dimethyl sulfoxide; Et = ethyl; Hal = halogen; "HF" = 5% hydrogen fluoride in acetonitrile:water (7:1 , v/v); Me = methyl; Ph = phenyl; PPTS = pyridinium p_-toluenesulfonate; TBAF = tetra-n-butylammonium fluoride trihydrate; TBDMS = tert-butyldimethylsilyl; THF = tetrahydrofuran; THP = tetrahydro-4H-pyran-2-yl; TMS = trimethylsilyl; Ts = β-toluenesulfonyl (tosyl). Scheme 1 Notes to Scheme 1 a) Dehydration with phosphorus oxychloride in pyridine; 0°C/1 h and thereafter 20°C/16-18 h. b) Protection of triene system with sulfur dioxide in dichloromethane/H 2 0; 20°C/45-90 min; chromatographic separation of C-6 epimers. c) Carbonyl-ene reaction with paraformaldehyde/boron trifluoride etherate in dichloromethane; 0°C/5-20 min. d) Deprotection of S0 2 -adduct with sodium hydrogen carbonate in toluene/ H 2 0; 90°C/1 -2 h. e) Tosylation with β-toluenesulfonyl chloride in pyridine; 0-5°C/1 6-18 h. f) Swern oxidation with oxalyl chloride/DMSO in dichloromethane; -78°C/20 min. Scheme 2 Q, Y, R 1 , R 2 , and Z are defined as above; Z 1 is hydroxy or protected alcohol, such as TMS-O, TBDMS-O, DPMS-O or THP-O; X is O or S; and n is 2, 3 or 4. Notes to Scheme 2 a) Alkylation with side chain building block V (H-X-R , see below) in the presence of base (sodium hydride) in DMF; 20°C/0.5-22 h. b) Reaction with Grignard reagent R -Mg-Hal, derived from side chain building block VI (R -Hal, see below), in the presence of Li 2 CuCl4 in THF; 0°C/2 h and thereafter 8-10°C/16-20 h. c) Reaction with ylide A^ -R-*, derived from side chain building block VII (A-R-* , see below), in the presence of base (lithium bis(trimethylsilyl)amide) in THF; -45°C/0.5-1 .5 h. d) Reaction with ylide A -R , derived from side chain building block VIII A see below), at elevated temperature in toluene; 90-1 10°C/2-8 h. e) Optional functional group modification in the side chain of compounds II. f) Isomerization of compounds lla and III to the corresponding compounds IV by means of UV-light in the presence of a triplet sensitizer, e.g. anthracene or 9-acetylanthracene. g) Deprotection of compounds IV to the corresponding compounds I, e.g. by treatment with TBAF or "HF". V H-X-R 3 R 3 = -(C 6 H 4 )-C(R 1 )(R 2 )-Z 1 (o-, rn-, Or) VI R 4 -Hal R 4 = -CH 2 -(CH 2 ) n -C(R 1 )(R 2 )-Z 1 Hal = Cl or Br VII A-R 5 A = Ph 3 P + --CH 2 or (EtO) 2 P(0)-CH 2 - R 5 = -CH=CH-CO-OMe VIM A-R 6 A as defined above R 6 = -CO-CH-CH 2 -CH 2 - I ι In A 1 -R 5 and A 1 -R 6 , A 1 stands for Ph 3 P + - " CH - or (EtO) 2 P(0)-CHLi-, R 5 and R 6 are as defined above. The present compounds are intended for use in pharmaceutical compositions which are useful in the local or systemic treatment of human and veterinary disorders as described above. The present compounds may be used in combination with other pharmaceuticals or treatment modalities. In the treatment of psoriasis the present compounds may be used in combination with e.g. steroids or with other treatments e.g. light- or UV-light-treatment or the combined PUVA-treatment. In the treatment of cancer the present compounds may be used in combination with other anti- cancer drugs or anti-cancer treatments, such as radiation treatment. In the prevention of graft rejection and graft versus host reaction, or in the treatment of autoimmune diseases, the present compounds may advantageously be used in combination with other immunosuppressive/immunoregulating drugs or treatments, e.g. with cyclosporin A. The amount required of a compound of formula I (hereinafter referred to as the active ingredient) for therapeutic effect will, of course, vary both with the particular compound, the route of administration and the mammal under treatment. The compounds of the invention can be administered by the parenteral, intra-articular, enteral or topical routes. They are well absorbed when given enterally and this is the preferred route of administration in the treatment of systemic disorders. In the treatment of dermatological disorders like psoriasis or eye diseases topical or enteral forms are preferred. While it is possible for an active ingredient to be administered alone as the raw chemical, it is preferable to present it as a pharmaceutical formulation. Con- veniently, the active ingredient comprises from 0.1 ppm to 0.1 % by weight of the formulation. The formulations, both for veterinary and for human medical use, of the present invention thus comprise an active ingredient in association with a pharmaceutically acceptable carrier therefore and optionally other therapeutic ingredient(s). The carrier(s) must be "acceptable" in the sense of being compatible with the other ingredients of the formulations and not deleterious to the recipient thereof. The formulations include e.g. those in a form suitable for oral, ophthalmic, rectal, parenteral (including subcutaneous, intramuscular and intravenous), transdermal, intra-articular and topical, nasal or buccal administration. By the term "dosage unit" is meant a unitary, i.e. a single dose which is capable of being administered to a patient, and which may be readily handled and packed, remaining as a physically and chemically stable unit dose comprising either the active material as such or a mixture of it with solid or liquid pharmaceutical diluents or carriers. The formulations may conveniently be presented in dosage unit form and may be prepared by any of the methods well known in the art of pharmacy. All methods include the step of bringing the active ingredient into association with the carrier which constitutes one or more accessory ingredients. In general, the formulations are prepared by uniformly and intimately bringing the active ingredient into association with a liquid carrier or a finely divided solid carrier or both, and then, if necessary, shaping the product into the desired formulation. Formulations of the present invention suitable for oral administration may be in the form of discrete units as capsules, sachets, tablets or lozenges, each containing a predetermined amount of the active ingredient; in the form of a powder or granules; in the form of a solution or a suspension in an aqueous liquid or non-aqueous liquid; or in the form of an oil-in-water emulsion or a water-in-oil emulsion. The active ingredient may also be administered in the form of a bolus, electuary or paste. Formulations for rectal administration may be in the form of a suppository incorporating the active ingredient and a carrier, or in the form of an enema. Formulations suitable for parenteral administration conveniently comprise a sterile oily or aqueous preparation of the active ingredient which is preferably isotonic with the blood of the recipient. Transdermal formulations may be in the form of a plaster. Formulations suitable for intra-articular or ophthalmic administration may be in the form of a sterile aqueous preparation of the active ingredient which may be in microcrystalline form, for example, in the form of an aqueous microcrystalline suspension. Liposomal formulations or biodegradable polymer systems may also be used to present the active ingredient for both intra-articular and ophthalmic administration. Formulations suitable for topical or ophthalmic administration include liquid or semi-liquid preparations such as liniments, lotions, gels, applicants, oil-in-water or water-in-oil emulsions such as creams, ointments or pastes; or solutions or suspensions such as drops. Formulations suitable for administration to the nose or buccal cavity include powder, self-propelling and spray formulations, such as aerosols and atomizers. In addition to the aforementioned ingredients, the formulations of this invention may include one or more additional ingredients, such as diluents, binders, preservatives etc. The compositions may further contain other therapeutical ly active compounds usually applied in the treatment of the above mentioned pathological conditions, such as other immunosuppressants in the treatment of immunological diseases, or steroids in the treatment of dermatological diseases. The present invention further concerns a method for treating patients suffering from one of the above pathological conditions, said method consisting of administering to a patient in need of treatment an effective amount of one or more compounds of formula I, alone or in combination with one or more other thera- peutically active compounds usually applied in the treatment of said pathological conditions. The treatment with the present compounds and/or with further therapeutical ly active compounds may be simultaneous or with intervals. In the systemic treatment daily doses of from 0.001 -2 μg per kilogram bodyweight, preferably from 0.002-0.3 μg/kg of mammal bodyweight, for example 0.003-0.3 μg/kg of a compound of formula I are administered, typically corre- sponding to a daily dose for an adult human of from 0.2 to 25 μg. In the topical treatment of dermatological disorders, ointments, creams or lotions containing from 0.1 -500 μg/g, and preferably from 0.1-100 μg/g, of a compound of formula I are administered. For topical use in ophthalmology ointments, drops or gels containing from 0.1 -500 μg/g, and preferably from 0.1 -100 μg/g, of a compound of formula I are administered. The oral compositions are formulated, preferably as tablets, capsules, or drops, containing from 0.05-50 μg, preferably from 0.1 -25 μg, of a compound of formula I, per dosage unit. The invention will now be further described in the following General Procedures, Preparations and Examples General The exemplified compounds I are listed in Table 5, whereas intermediates 5-16 and compounds of the general formulas II, III and IV are listed in Tables 1-4. For nuclear magnetic resonance spectra (300 MHz) chemical shift values (δ) are quoted for deuteriochloroform solutions relative to internal tetramethylsilane (δ = 0) or chloroform (δ = 7.25). The value for a multiplet, either defined (doublet (d), triplet (t), quartet (q)) or not (m) at the approximate mid point is given unless a range is quoted (s = singlet, b = broad). Coupling constants (1) are given in Hertz (Hz), and are sometimes approximated to the nearest unit. Ether is diethyl ether, and was dried over sodium. THF was dried over sodium-benzophenone. Petroleum ether refers to the pentane fraction. Reactions were routinely run under an argon atmosphere at room temperature unless otherwise noted. The work-up procedure referred to involves dilution with the specified solvent (otherwise the organic reaction solvent), extraction with water and then brine, drying over anhydrous MgS0 4 , and concentration rn vacuo to give a residue. Chromatography was performed on silica gel. Table 1 Intermediates of Formulas 5-16 (Scheme 1) Compound Preparation General No. No. Procedure 5 1 1 7a 3 2 7b 4 2 9a 7 3 9b 8 3 11 11 4 13 13 5 15 15 6 6 2 1 8a 5 2 8b 6 2 10a 9 3 10b 10 3 12 12 4 14 14 5 16 16 6 Table 2 Intermediates of the General Formulas lla-d (Scheme 2) Radicals General Compound Prep. General Configur, Formula No. No. Proc. at C20 X R 1 R^ lla 201 1 7 7 S O - Me Me OH lla 202 18 7 R o - Me Me OH lla 203 19 7 S S - Me Me OH lla 204 20 7 R s - Me Me OH CD Mb 205 21 8 R - 2 Me Me OTMS Mb 206 22 8 S - 2 Me Me OTMS lib 207 23 8 R - 3 Et Et OTMS Mb 208 24 8 R _ 3 Et Et OTMS lie 209 25 9 R lie 210 26 9 S lid 21 3 27 10 R lid 214 28 10 S Table 3 Intermediates of the General Formula III (Scheme 2) Radical Compound Prep. General Configur. No. No. Proc. at C20 Q Y R 1 R^ 305 29 1 1 R (CH 2 ) 3 single bond Me Me OH 306 30 1 1 S (CH 2 ) 3 single bond Me Me OH 307 31 1 1 R (CH 2 ) 4 single bond Et Et OH 308 32 1 1 S (CH 2 ) 4 single bond Et Et OH 309 33 12 R (CH=CH) 2 a single bond Me Me OH 310 34 12 S (CH=CH) 2 a single bond Me Me OH 31 1 35 12 R (CH=CH) 2 a single bond Et Et OH 312 36 12 S (CH=CH) 2 a single bond Et Et OH Table 3 contii nued Intermediates of the General Formu la lll (Scheme 2] I Radical Compound Prep. General Configur. No. No. Proc. at C20 Q Y R 1 R 2 Z 31 3 37 1 3 R (CH=CH) a CH(OH) b CH 2 -CH 2 H t 314 38 13 S (CH=CH) a CH(OH) b CH 2 -CH 2 H 31 5 39 13 R (CH=CH) a CH(OH) c CH 2 -CH 2 H 316 40 13 S (CH=CH) a CH(OH) c CH 2 _CH 2 H a £-(E,E-) Configuration of the double bond(s). b S-Configuration at this carbon atom c R-Configuration at this carbon atom Table 4 Intermediates of the General Formula IV (Scheme 2) Radica I Compound Prep. Configur. No. No. at C20 Q Y R 1 R 2 Z 401 41 S CH 2 0-CgH4 (meta) Me Me OH 402 42 R CH 2 0-C H4 (meta) Me Me OH 403 43 S CH 2 S-CgH4 (meta) Me Me OH N3 N) 404 44 R CH 2 S-CβH4 (meta) Me Me OH 405 45 R (CH 2 ) 3 single bond Me Me OH 406 46 S (CH 2 ) 3 single bond Me Me OH 407 47 R (CH 2 ) 4 single bond Et Et OH 408 48 S (CH 2 ) 4 single bond Et Et OH 409 49 R (CH=CH) 2 a single bond Me Me OH 410 50 S (CH=CH) 2 a single bond Me Me OH Table 4 continued Intermediates of the General Formula IV (Scheme 2) Rad ical Compound Prep. Configur. No. No. at C20 Q Y R 1 R 2 Z 41 1 51 R (CH=CH) 2 a single bond Et Et OH 412 52 S (CH=CH) 2 a single bond Et Et OH 413 53 R (CH=CH) 2 a CH(OH) b CH 2 -CH 2 H 414 54 S (CH=CH) 2 a CH(OH) b CH 2 -CH 2 H O 41 5 55 R (CH=CH) 2 a CH(OH) c CH 2 -CH 2 H 416 56 S (CH=CH) 2 a CH(OH) c CH 2 -CH 2 H a £-(E,E-) Confi guration of the double bond(s). D S-Configuration at this carbon atom c R-Configurati on at this carbon atom Table 5 Examplified Compounds Radical Compound Example Config. No. No. at C20 Q Y R 1 R ^ 101 1 S CH 2 0-C 6 H 4 (meta) Me Me OH 102 2 R CH 2 0-C 6 H 4 (meta) Me Me OH 103 3 S CH 2 S-C5H4 (meta) Me Me OH M 104 4 R CH 2 S-C H4 (meta) Me Me OH -I-- 105 5 R (CH 2 ) 3 single bond Me Me OH 106 6 S (CH 2 ) 3 single bond Me Me OH 107 7 R (CH 2 ) 4 single bond Et Et OH 108 8 S (CH 2 ) 4 single bond Et Et OH 109 9 R (CH=CH) 2 a single bond Me Me OH 110 10 S (CH=CH) 2 a single bond Me Me OH Table 5 continued Examplified Compounds I Radical Compound Example Config. No. No. atC20 Q Y R 1 R^ 111 11 R (CH=CH) 2 a single bond Et Et OH 112 12 S (CH=CH) 2 a single bond Et Et OH 113 13 R (CH=CH) 2 a CH(OH) b CH 2 -CH 2 H 114 14 S (CH=CH) 2 a CH(OH) b CH 2 -CH 2 H 115 15 R (CH=CH) 2 a CH(OH) c CH 2 -CH 2 H 116 16 S (CH=CH) 2 a CH(OH) c CH 2 -CH 2 H a E-(E,E-) Configuration of the double bond(s). S-Configuration at this carbon atom c R-Configuration at this carbon atom General Procedures General Procedure 1 : Dehydration of compounds 4 and 3 to give the corresponding anhvdro compounds 5 and 6 (Preparations 1 -2) A solution of compound 4 (or 3) (2.81 g, 5 mmol) in pyridine (40 ml) was cooled to 0°C, and phosphorus oxychloride (4.6 ml, 50 mmol) was added dropwise over 5 minutes with stirring. After stirring for one hour at the low temperature and 1 6 hours at ambient temperature, the reaction mixture was poured onto ice-cooled ethyl acetate (120 ml), and water (40 ml) was carefully added while stirring. An apparent pH of 2.8 in the mixture was adjusted by addition of 4 N hydrochloric acid (80 ml) and the phases were separated. After an additional extraction of the aqueous layer with ethyl acetate (60 ml), the combined organic extracts were worked up. The crude product was either used for the next step without further purification (compound 5_) or purified by crystallization from ether-MeOH (compound 6). General Procedure 2: Reaction of compounds 5 and 6 with sulfur dioxide to give the corresponding SQ adducts 7a/7b and 8a/8b (Preparations 3-6) To a solution of crude compound 5 (or pure 6) (5 mmol) in dichloromethane (25 ml) and water (10 ml) was added an ice-cooled, ca. 1 .5 M solution of sulfur dioxide in dichloromethane (100 ml) with vigorous stirring. The mixture was stirred for 45 minutes at ambient temperature and then poured onto ice-water (100 ml). The apparent pH of the mixture was adjusted to 5.6 with 2 N sodium hydroxide (62 ml). The organic phase was separated and, after an additional extraction of the aqueous layer (dichloromethane, 25 ml), worked up. The residue was chromatographed (eluent: 5% to 10% ether in petroleum ether) to separate the 6(S) and 6(R) S0 2 -adducts 7a and 7b (or 9a and 9b). General Procedure 3: Ene-reaction of SQ -adducts 7a, 7b. 8a and 8b with paraformaldehvde to the corresponding SQ - protected 16-dehvdro alcohols 9a, 9b, 10a and 10b (Preparations 7-10) To a solution of compound 7a (or 7b / 8b) (2,42 g, 4 mmol) in dichloromethane (80 ml) was added at 0°C with stirring paraformaldehyde (0.60 g, 20 mmol) followed by boron trifluoride etherate (0.10 ml, 0.4 equiv). After stirring at 0°C for 15 minutes, the reaction was quenched with 1/1 5 M phosphate buffer (pH 6.5) (60 ml), and the mixture was worked up. The residue was chromatog- raphed (eluent: 10% to 1 5% ethyl acetate in petroleum ether) to separate minor amounts of the less polar starting material from the more polar title compound (9a or 9b, 10a, 10b). General Procedure 4: Deprotection of the SQ 2 -adducts 9a/9b and 10a/10b to give the corresponding 1 6-dehvdro alcohols 1 1 and 12 (Preparations 1 1 -12) To a solution of compound 9a (or 9b) (1.27 g, 2 mmol) in toluene (20 ml) was added water (10 ml) and sodium hydrogen carbonate (0.67 g, 8 mmol), and the mixture was stirred at 85-90°C for 1 .5 hours. After cooling to room temperature, the reaction mixture was worked up (toluene) to give compound JJ_ as a foam. Similar treatment of compound 10a (or 10b) afforded compound 1_2 as an amorphous powder. General Procedure 5: Tosylation of the 16-dehvdro alcohols 1 1 and 12 to yield the corresponding tosylates 1 3 and 14 (Preparations 13-14) To a stirred solution of compound JJ. (or J_2) (2 mmol) in pyridine (10 ml) was added at 0°C β-toluenesulfonyl chloride (0.76 g, 4 mmol), and the mixture was stirred for 2 hours at 0-5°C and then left in the refrigerator overnight (1 6 hours). The reaction mixture was poured onto an ice-cooled mixture of ethyl acetate (40 ml) and water, and the apparent pH in the aqueous layer was adjusted to 2.6 with 4 N hydrochloric acid. After separation of the aqueous phase and an additional extraction with ethyl acetate, the combined organic extracts were worked up. The residue was purified by chromatography (eluent: 5% ether in petroleum ether) to give pure J_3 (or 14). General Procedure 6: Oxydation of the 16-dehydro alcohols 1 1 and 12 to the corresponding aldehydes 1 5 and 16 (Swern oxydation) (Preparations 1 5-16) A stirred solution of oxalyl chloride (0.45 ml, 5 mmol) in dry dichloromethane was cooled to -78°C, and 2 N dimethyl sulfoxide in dry dichloromethane (5.6 ml, 1 1 .2 mmol) was added by syringe. After stirring for 10 minutes at the low temperature, a solution of JJ . (or J_2) (4 mmol) in dry dichlormethane (12 ml) was added (syringe). Stirring was continued for another 20 minutes before the reaction was quenched by addition of triethylamine (2.1 ml, 1 5 mmol). The cooling bath was removed, and the reaction mixture was allowed to warm to room temperature (about 45 minutes with stirring) and worked up (dichloromethane) to give crude compound Jj5 (or Jj6) which was used in the following step without further purification. General Procedure 7: Alkylation of compounds 13 and 14 to give compounds lla (Preparations 1 7-20) To a solution of the appropriate alkylating agent HXR (1 .5 mmol) in dry DMF (10 ml) was added sodium hydride (2.25 mmol), and the mixture was stirred for 20 minutes. A solution of compound H (or T4) in dry DMF (5 ml) was then added by syringe, and stirring was continued for either 30-40 minutes (S-alkylation) or 16-22 hours (O-alkylation). After cooling to 0-5°C, excess reagent was decomposed by dropwise addition of water (0.5-1 .0 ml), and the reaction mixture was worked up (ethyl acetate). The residue was purified by chromatography (eluent: 5%-10% ether in petroleum ether) to afford the corresponding compound lla. General Procedure 8: Reaction of compounds 1 3 and 14 with Grignard reagents R MgHal, derived from side chain building blocks II (R Hal) to give compounds Mb (Preparations 21 -24) To magnesium turnings (220 mg, 1.1 atomic equivalents) in a dry flask was added dropwise with stirring in an argon atmosphere a solution of the appropriate compound VI (8.25 mmol) in dry THF (7.5 ml). Stirring was continued under heating to reflux for 45 minutes. The stirred Grignard reagent was treated at 0°C with a solution of lithium chloride (32 mg) and anhydrous cupric chloride (50 mg) in dry THF (5 ml) followed after 1 5 minutes by a solution of compound J_3 (or T4) in dry THF (5 ml). After stirring for 18 hours at 5-10°C, the reaction mixture was worked up (ether). The crude product was purified by chromatography to yield the desired compound Mb. 1 ^ General Procedure 9: Reaction of aldehydes 1 5 and 1 6 with ylides A R derived from side chain building block VII (AR ), to give compounds lie (Preparations 25-26) To a stirred solution of aldehyde J_5 (or Jj6) (1 .0 mmol) and the appropriate compound VII (1 .8 mmol) in dry THF (5 ml) was added dropwise via a syringe at -50°C 1 M lithium bis(trimethylsilyl)amide in dry THF (1 .5 ml). Stirring at the low temperature was continued for another hour before the reaction mixture was allowed to warm to -10°C (15-20 minutes). It was quenched with a few drops of water and worked up (ether). The residue was purified by chromatography to give the desired compound lie. General Procedure 10: Reaction of aldehydes 1 5 and 1 6 with ylides A R . derived from side chain building block VIM (A R ), to give compounds lid (Preparations 27- 28) To a solution of aldehyde JJ5 (or 16) (1 .8 mmol) in dry toluene (20 ml) was added the appropriate compound VIM (3.6 mml), and the mixture was stirred at 90- 1 10°C for 2-4 hours. After cooling to 0°C, the mixture was filtered, and the filtrate concentrated and purified by chromatography to give the desired compound lid. General Procedure 1 1 : Deprotection of compounds Mb to the corresponding compounds III with PPTS (Preparations 29-32) To a solution of the appropriate compound Mb (0.5 mmol) in THF (3 ml) and ethanol (6 ml) was added PPTS (1 5 mg) and the mixture was stirred for one hour. Work up (ethyl acetate) yielded a crude product which was purified by chromatography to give the desired compound Hi. General Procedure 12: Reaction of compound He with alkyl lithium to give the corresponding compounds III (Preparations 33-36) Pre-cooled (-1 5°C) alkyl lithium in ether (3-4 molar equivalents) was added dropwise at -78°C via a syringe to a stirred solution of the appropriate compound lie (0.5 mmol) in dry THF (6 ml). After a further 45 minutes at -78°C, the reaction was quenched with a few drops of water, warmed to 20°C and worked up (ether). The residue was chromatographed to yield the desired compound III. General Procedure 1 3: Reduction of compounds lid to the corresponding compounds III (Preparations 37-40) To stirred solution of the appropriate compound lid (0.8 mmol) in THF (4 ml) was added at 0°C 0.4 M Ce Cl 3 • 7 H 2 0 in ethanol (2 ml) followed by sodium borohydride (76 mg, 2 mmol). Methanol (4 ml) was added over 10 minutes with stirring, and after a further 20 minutes the mixture was worked up (ethyl acetate). The residue was purified by chromatography to give the desired compound III. General Procedure 14: Isomerization of compounds lla and III to the corresponding compounds IV (Preparations 41 -56) A solution of the appropriate compound lla or III (0.28 mmol), anthracene (0.10 g, 0.56 mmol) and triethylamine (0.20 ml, 1 .4 mmol) in dichloromethane (1 6 ml) in a 25 ml round-bottomed Pyrex flask was irradiated with UV-light from a high pressure ultraviolet lamp, type TQ760Z2 (Hanau), at ca. 10°C for 30 minutes while stirring. The reaction mixture was evaporated in vacuo, and the residue was treated with petroleum ether (2x2 ml) and filtered. The filtrate was concentrated and purified by chromatography to afford the title compound. General Procedure 1 5: Deprotection of compounds IV to the corresponding compounds I bv treatment with "HF" (Examples 1-8 and 1 3-16) To a stirred solution of the appropriate compound IV (0.25 mmol) in ethyl acetate (1 .5 ml) was added acetonitrile (6 ml) followed by a 5% solution of hydrofluoric acid in acetonitrile-H 2 0 7:1 (2.0 ml). After stirring for a further 45-60 minutes, 1 M potassium hydrogen carbonate (10 ml) was added, and the reaction mixture was worked up (ethyl acetate). The residue was purified by chromatography (eluant: 30% pentane in ethyl acetate) to give the desired compound I. General Procedure 16: Deprotection of compounds IV to the corresponding compounds I bv treatment with tetra-n-butylammonium fluoride (Examples 9-12) To a solution of the appropriate compound IV (0.18 mmol) in THF (4.5 ml) was added TBAF trihydrate (0.29 g, 0.9 mmol), and the mixture was heated to reflux for one hour with stirring. After addition of 0.2 M sodium hydrogen carbonate (5 ml), the mixture was worked up (ethyl acetate). The residue was purified by chromatography (eluant: 50% ethyl acetate in pentane) to yield the title compound. Preparations Preparation 1 : Compound 5 Method: General Procedure 1 Starting material: Compound 4 1 H NMR δ 0.06 (m, 12H), 0.76 (s, 3H), 0.85 (s, 9H), 0.89 (s, 9H), 1 .66 (m, 3H), 1 .45-2.50 (m, 13H), 2.56 (dd, 1 H), 2.86 (m, 1 H), 4.22 (m, 1 H), 4.53 (m, 1 H), 4.94 (m, 1 H), 4.98 (m, 1 H), 5.19 (m, 1 H), 5.85 (d, 1 H), 6.44 (d, 1 H). Preparation 2: Compound 6 Method: General Procedure 1 Starting material: Compound 3 Mp. 87-88°C Anal. Calcd. for C 33 H 58 0 2 Si 2 : C 73.00, H 10.77 Found: C 72.90, H 10.82 1 H NMR δ 0.06 (m, 12H), 0.62 (s, 3H), 0.86 (s, 9H), 0.90 (s, 9H), 1 .56 (d, 3H), 1 .20-2.10 (m, 10H), 2.32 (m, 3H), 2.57 (dd, 1 H), 2.89 (m, 1 H), 4.22 (m, 1 H), 4.53 (m, 1 H), 4.94 (m, 1 H), 4.99 (m, 1 H), 5.08 (m, 1 H), 5.86 (d, 1 H), 6.45 (d, 1 H). Preparation 3: Compound 7a Method: General Procedure 2 Starting material: Compound 5 Mp. 1 1 7-1 18°C Anal. Calcd. for C 33 H 58 0 4 SSi 2 : C 65.29, H 9.63, S 5.28 Found: C 65.12, H 9.54, S 5.22 1 H NMR δ 0.05 (m, 12H), 0.86 (s, 9H), 0.87 (s, 9H), 0.87 (s, 3H), 1 .66 (m, 3H), 1 .40-2.50 (m, 14H), 2.60 (m, 1 H), 3.60 (bd, 1 H), 3.93 (m, 1 H), 4.1 9 (m, 1 H), 4.36 (m, 1 H), 4.64 (d, 1 H), 4.74 (d, 1 H), 5.1 7 (m, 1 H). Preparation 4: Compound 7b Method: General Procedure 2 Starting material: Compound 5 ! H NMR δ 0.06 (m, 12H), 0.78 (s, 3H), 0.87 (s, 9H), 0.88 (s, 9H), 1 .66 (m, 3H), 1 .45-2.45 (m, 14H), 2.56 (m, 1 H), 3.63 (bd, 1 H), 3.92 (bd, 1 H), 4.1 5 (m, 1 H), 4.38 (m, 1 H), 4.62 (d, 1 H), 4.84 (d, 1 H), 5.19 (m, 1 H). Preparation 5: Compound 8a Method: General Procedure 2 Starting material: Compound 6 Mp. 1 1 7-1 18°C Anal. Calcd. for C 33 H 58 0 4 SSi 2 : C 65.29, H 9.63, S 5.28 Found: C 65.14, H 9.54, S 5.08 1 H NMR δ 0.06 (m, 12H), 0.72 (s, 3H), 0.87 (s, 9H), 0.88 (s, 9H), 1 .36 (m, 1 H), 1 .55 (d, 3H), 1 .45-2.05 (m, 10H), 2.10-2.45 (m, 3H), 2.63 (m, 1 H), 3.60 (bd, 1 H), 3.93 (m, 1 H), 4.18 (m, H), 4.36 (m, 1 H), 4.65 (d, 1 H), 4.75 (d, 1 H), 5.10 (m, 1 H). Preparation 6: Compound 8b Method: General Procedure 2 Starting material: Compound 6 1 H NMR δ 0.06 (m, 12H), 0.64 (s, 3H), 0.86 (s, 9H), 0.88 (s, 9H), 1 .55 (d, 3H), 1 .20-1 .95 (m, 10H), 2.08 (dd, 1 H), 2.30 (m, 3H), 2.60 (m, 1 H), 3.63 (bd, 1 H), 3.92 (bd, 1 H), 4.16 (m, 1 H), 4.38 (m, 1 H), 4.62 (d, 1 H), 4.85 (d, 1 H), 5.10 (m, 1 H). Preparation 7 Compound 9a Method: General Procedure 3 Starting material: Compound 7a Mp. 1 1 5-1 16°C Anal. Calcd. for C 34 H 60 O 5 SSi 2 : C 64.10, H 9.49, S 5.03 Found: C 63.78, H 9.55, S 5.00 1 H NMR δ 0.06 (m, 12H), 0.82 (s, 3H), 0.87 (s, 9H), 0.88 (s, 9H), 1 .06 (d, 3H), 1 .35-2.50 (m, 14H), 2.61 (m, 1 H), 3.57 (m, 3H), 3.93 (m, 1 H), 4.18 (m, 1 H), 4.37 (m, 1 H), 4.63 (d, 1 H), 4.82 (d, 1 H), 5.43 (m, 1 H). Preparation 8: Compound 9b Method: General Procedure 3 Starting material: Compound 7b Mp. 1 31 -1 32°C Anal. Calcd. for C 34 H 60 O 5 SSi 2 : C 64.10, H 9.49 Found: C 64.18, H 9.46 1 H NMR δ 0.05 (m, 12H), 0.72 (s, 3H), 0.85 (s, 9H), 0.87 (s, 9H), 1 .06 (d, 3H), 1 .35-2.02 (m, 9H), 2.10-2.65 (m, 6H), 3.58 (m, 3H), 3.92 (bd, 1 H), 4.1 5 (m, 1 H), 4.38 (m, 1 H), 4.62 (d, 1 H), 4.92 (d, 1 H), 5.45 (m, 1 H). Preparation 9: Compound 10a Method: General Procedure 3 Starting material: Compound 8a Mp. 125-126°C Anal. Calcd. for C 34 H 60 O 5 SSi 2 : C 64.10, H 9.49, S 5.03 Found: C 63.98, H 9.46, S 4.82 1 H NMR δ 0.06 (m, 12H), 0.81 (s, 3H), 0.87 (s, 9H), 0.88 (s, 9H), 1 .1 1 (d, 3H), 1 .40-2.50 (m, 14H), 2.60 (m, 1 H), 3.47 (dd, 1 H), 3.58 (dd, 1 H), 3.60 (bd, 1 H), 3.93 (m, 1 H), 4.19 (m, 1 H), 4.37 (m, 1 H), 4.64 (m, 1 H), 4.82 (m, 1 H), 5.45 (m, 1 H). Preparation 10: Compound 10b Method: General Procedure 3 Starting material: Compound 8b Mp. 129-1 30°C 1 H NMR δ 0.06 (m, 12H), 0.72 (s, 3H), 0.86 (s, 9H), 0.88 (s, 9H), 1 .1 1 (d, 3H), 1.35-2.00 (m, 9H), 2.10-2.50 (m, 5H), 2.57 (dd, 1 H), 3.46 (dd, 1 H), 3.59 (dd, 1 H), 3.64 (bd, 1 H), 3.92 (bd, 1 H), 4.16 (m, 1 H), 4.38 (m, 1 H), 4.62 (d, 1 H), 4.93 (d, 1 H), 5.48 (m, 1 H). Preparation 1 1 : Compound 1 1 Method: General Procedure 4 Starting material: Compound 9a or 9b Anal. Calcd. for C 34 H 60 O 3 SSi 2 : C 71 .27, H 10.55 Found: C 71.00, H 10.59 1 H NMR δ 0.05 (m, 12H), 0.71 (s, 3H), 0.85 (s, 9H), 0.90 (s, 9H), 1 .06 (d, 3H), 1 .35-2.00 (m, 8H), 2.09 (m, 1 H), 2.28 (m, 2H), 2.41 (m. 2H), 2.58 (dd, 1 H), 2.87 (m, 1 H), 3.55 (m, 2H), 4.22 (m, 1 H), 4.54 (m, 1 H), 4.95 (m, 1 H), 4.99 (m, 1 H), 5.46 (m, 1 H), 5.92 (d, 1 H), 6.45 (d, 1 H). Preparation 12: Compound 12 Method: General Procedure 4 Starting material: Compound 10a or 10b 1 H NMR δ 0.06 (m, 12H), 0.70 (s, 3H), 0.85 (s, 9H), 0.90 (s, 9H), 1 .1 1 (d, 3H), 1 .40-1 .90 (m, 7H), 1 .93 (m, 1 H), 2.10 (m, 1 H), 2.20-2.50 (m, 4H), 2.58 (dd, 1 H), 2.86 (m, 1 H), 3.48 (m, 1 H), 3.57 (m, 1 H), 4.22 (m, 1 H), 4.54 (m, 1 H), 4.95 (m, 1 H), 4.99 (m, 1 H), 5.48 (m, 1 H), 5.92 (d, 1 H), 6.45 (d, 1 H). Preparation 1 3: Compound 13 Method: General Procedure 5 Starting material: Compound 1 1 Mp. 77-78°C Anal. Calcd. for C 41 H 66 0 5 SSi 2 : C 67.72, H 9.1 5, S 4.41 Found: C 67.50, H 9.07, S 4.67 1 H NMR δ 0.06 (m, 12H), 0.60 (s, 3H), 0.86 (s, 9H), 0.89 (s, 9H), 1 .04 (d, 3H), 1 .30-1 .85 (m, 6H), 1 .91 (m, 1 H), 2.02 (m, 1 H), 2.10-2.38 (m, 3H), 2.44 (s, 3H), 2.40-2.62 (m, 2H), 2.84 (m, 1 H), 3.84 (t, 1 H), 4.04 (dd, 1 H), 4.22 (m, 1 H), 4.53 (m, 1 H), 4.94 (m, 1 H), 4.98 (m, 1 H), 5.31 (m, 1 H), 5.88 (d, 1 H), 6.43 (d, 1 H), 7.33 (d, 2H), 7.78 (d, 2H). Preparation 14: Compound 14 Method: General Procedure 5 Starting material: Compound 12 Mp. 89-90°C Anal. Calcd. for C 41 H 66 0 5 SSi 2 : C 67.72, H 9.15 Found: C 67.73, H 9.36 1 H NMR δ 0.06 (m, 12H), 0.63 (s, 3H), 0.85 (s, 9H), 0.90 (s, 9H), 1 .09 (d, 3H), 2.44 (s, 3H), 2.56 (dd, 1 H), 0.75-2.50 (m, 12H), 2.83 (m, 1 H), 3.73 (t, 1 H), 4.03 (dd, 1 H), 4.22 (m, 1 H), 4.53 (m, 1 H), 4.95 (m, 1 H), 4.98 (m, 1 H), 5.37 (m, 1 H), 5.88 (d, 1 H), 6.42 (d, 1 H), 7.33 (d, 2H), 7.78 (d, 2H). Preparation 15: Compound 1 5 Method: General Procedure 6 Starting material: Compound 1 1 1 H NMR δ 0.06 (m, 12H), 0.69 (s, 3H), 0.85 (s, 9H), 0.90 (s, 9H), 1 .21 (d, 3H), 1 .40-2.00 (m, 7H), 2.14 (m, 1 H), 2.31 (m, 2H), 2.44 (dd, 1 H), 2.58 (m, 1 H), 2.87 (m, 1 H), 3.05 (m, 1 H), 4.22 (m, 1 H), 4.53 (m, 1 H), 4.95 (m, 1 H), 4.99 (m, 1 H), 5.52 (m, 1 H), 5.92 (d, 1 H), 6.44 (d, 1 H), 9.45 (d, 1 H). Preparation 16: Compound 16 Method: General Procedure 6 Starting material: Compound 12 1 H NMR δ 0.06 (m, 12H), 0.70 (s, 3H), 0.85 (s, 9H), 0.89 (s, 9H), 1 .24 (d, 3H), 1 .00-2.00 (m, 7H), 2.14 (m, 1 H), 2.29 (m, 2H), 2.46 (m, 1 H), 2.57 (dd, 1 H), 2.86 (m, 1 H), 3.05 (m, 1 H), 4.22 (m, 1 H), 4.53 (m, 1 H), 4.94 (m, 1 H), 4.99 (m, 1 H), 5.56 (m, 1 H), 5.92 (d, 1 H), 6.44 (d, 1 H), 9.45 (d, 1 H). Preparation 1 7 Compound 201 Method: General Procedure 7 Starting material: Compound 13 Alkylating agent: 3-(1 -hydroxy-1-methyl)ethylphenol Chromatography eluant: 10% ether in pentane 1 H NMR δ 0.05 (m, 12H), 0.72 (s, 3H), 0.85 (s, 9H), 0.90 (s, 9H), 1 .20 (d, 3H), 1 .57 (s, 6H), 1 .15-2.00 (m, 8H), 2.09 (m, 1 H), 2.28 (m, 2H), 2.43 (m, 1 H), 2.60 (m, 2H), 2.87 (m, 1 H), 3.81 (t, 1 H), 4.00 (dd, 1 H), 4.23 (m, 1 H), 4.53 (m, 1 H), 4.95 (m, 1 H), 4.99 (m, 1 H), 5.48 (m, 1 H), 5.93 (d, 1 H), 6.46 (d, 1 H), 6.76 (m, 1 H), 7.03 (m, 2H), 7.24 (t, 1 H). Preparation 18 Compound 202 Method: General Procedure 7 Starting material: Compound 14 Alkylating agent: 3-(1 -hydroxy-1 -methyl)ethylphenol Chromatography eluant: 10% ether in pentane 1 H NMR δ 0.05 (m, 12H), 0.72 (s, 3H), 0.85 (s, 9H), 0.90 (s, 9H), 1 .23 (d, 3H), 1 .57 (s, 6H), 1 .40-2.00 (m, 8H), 2.09 (m, 1 H), 2.29 (m, 2H), 2.42 (m, 1 H), 2.60 (m, 2H), 2.87 (m, 1 H), 3.67 (t, 1 H), 4.01 (dd, 1 H), 4.23 (m, 1 H), 4.54 (m, 1 H), 4.95 (m, 1 H), 4.99 (m, 1 H), 5.51 (m, 1 H), 5.93 (d, 1 H), 6.46 (d, 1 H), 6.78 (m, 1 H), 7.04 (m, 2H), 7.24 (t, 1 H). Preparation 19 Compound 203 Method: General Procedure 1 7 Starting material: Compound 13 Alkylating agent: 3-(1 -hydroxy-1 -methyl)ethylthiophenol Chromatography eluant: 10% ether in pentane 1 H NMR δ 0.06 (m, 12H), 0.70 (s, 3H), 0.86 (s, 9H), 0.90 (s, 9H), 1 .19 (d, 3H), 1 .56 (s, 6H), 1 .1 5-1 .87 (m, 7H), 1 .92 (m, 1 H), 2.07 (m, 1 H), 2.20-2.50 (m, 4H), 2.57 (dd, 1 H), 2.85 (d, 1 H), 2.86 (dd, 1 H), 3.20 (dd, 1 H), 4.22 (m, 1 H), 4.53 (m, 1 H), 4.94 (m, 1 H), 4.99 (m, 1 H), 5.44 (m, 1 H), 5.91 (d, 1 H), 6.45 (d, 1 H), 7.1 5- 7.30 (m, 3H), 7.46 (m, 1 H). Preparation 20 Compound 204 Method: General Procedure 7 Starting material: Compound 14 Alkylating agent: 3-(1 -hydroxy-1 -methyl)ethylthiophenol Chromatography eluant: 10% ether in pentane 1 H NMR δ 0.05 (m, 12H), 0.67 (s, 3H), 0.85 (s, 9H), 0.90 (s, 9H), 1 .22 (d, 3H), 1 .56 (s, 6H), 1 .40-1 .87 (m, 7H), 1 .93 (m, 1 H), 2.08 (m, 1 H), 2.25 (m, 2H), 2.40 (m, 2H), 2.58 (dd, 1 H), 2.79 (dd, 1 H), 2.84 (m, 1 H), 3.18 (dd, 1 H), 4.22 (m, 1 H), 4.53 (m, 1 H), 4.95 (m, 1 H), 4.99 (m, 1 H), 5.47 (m, 1 H), 5.90 (d, 1 H), 6.44 (d, 1 H), 7.1 5- 7.30 (m, 3H), 7.48 (m, 1 H). Preparation 21 Compound 205 Method: General Procedure 8 Starting material: Compound 13 Alkylating agent: 4-Bromo-2-methyl-2-trimethylsilyloxybutane Chromatography eluant: 1 % ether in pentane 1 H NMR δ 0.07 (m, 21 H), 0.68 (s, 3H), 0.85 (s, 9H), 0.90 (s, 9H), 1 .02 (d, 3H), 1 .18 (s, 6H), 1 .10-2.45 (m, 18H), 2.60 (dd, 1 H), 2.85 (m, 1 H), 4.22 (m, 1 H), 4.53 (m, 1 H), 4.95 (m, 1 H), 4.99 (m, 1 H), 5.30 (m, 1 H), 5.92 (d, 1 H), 6.46 (d, 1 H). Preparation 22 Compound 206 Method: General Procedure 8 Starting material: Compound 14 Alkylating agent: 4-Bromo-2-methyl-2-trimethylsilyloxybutane Chromatography eluant: 10% ether in pentane 1 H NMR δ 0.06 (m, 12H), 0.10 (s, 9H), 0.69 (s, 3H), 0.85 (s, 9H), 0.90 (s, 9H), 1 .05 (d, 3H), 1 .19 (s, 6H), 1 .10-2.45 (m, 18H), 2.59 (dd, 1 H), 2.85 (m, 1 H), 4.22 (m, 1 H), 4.53 (m, 1 H), 4.94 (m, 1 H), 4.99 (m, 1 H), 5.33 (m, 1 H), 5.92 (d, 1 H), 6.46 (d, 1 H). Preparation 23 Compound 207 Method: General Procedure 8 Starting material: Compound 1 3 Alkylating agent: 6-Bromo-2-ethyl-3-trimethylsilyloxyhexane Chromatography eluant: 1 % ether in pentane 1 H NMR δ 0.06 (m, 12H), 0.08 (s, 9H), 0.68 (s, 3H), 0.80 (t, 6H), 0.85 (s, 9H), 0.90 (s, 9H), 1 .01 (d, 3H), 1 .44 (q, 4H), 0.75-2.45 (m, 20H), 2.58 (dd, 1 H), 2.85 (m, 1 H), 4.22 (m, 1 H), 4.54 (m, 1 H), 4.95 (m, 1 H), 4.99 (m, 1 H), 5.30 (m, 1 H), 5.92 (d, 1 H), 6.46 (d, 1 H). Preparation 24 Compound 208 Method: General Procedure 8 Starting material: Compound 14 Alkylating agent: 6-Bromo-3-ethyl-3-trimethylsilyloxyhexane Chromatography eluant: 1 % ether in pentane λ H NMR δ 0.06 (m, 12H), 0.08 (s, 9H), 0.69 (s, 3H), 0.80 (t, 6H), 0.85 (s, 9H), 0.90 (s, 9H), 1 .04 (d, 3H), 1 .1 5-2.45 (m, 20H), 1 .44 (q, 4H), 2.59 (dd, 1 H), 2.86 (m, 1 H), 4.22 (m, 1 H), 4.54 (m, 1 H), 4.95 (m, 1 H), 4.99 (m, 1 H), 5.32 (m, 1 H), 5.92 (d, 1 H), 6.46 (d, 1 H). Preparation 25 Compound 209 Method: General Procedure 9 Starting material: Compound 1 5 Chromatography eluant: 2.5% ether in pentane 1 H NMR δ 0.06 (m, 12H), 0.65 (s, 3H), 0.85 (s, 9H), 0.89 (s, 9H), 1 .19 (d, 3H), 1 .1 5-1 .87 (m, 6H), 1 .93 (m, 1 H), 2.06 (m, 1 H), 2.25 (m, 2H), 2.38 (dd, 1 H), 2.58 (dd, 1 H), 2.84 (m, 1 H), 3.00 (m, 1 H), 3.73 (s, 3H), 4.22 (m, 1 H), 4.52 (m, 1 H), 4.95 (m, 1 H), 4.98 (m, 1 H), 5.41 (m, 1 H), 5.81 (d, 1 H, J = 1 5.4 Hz), 5.90 (d, 1 H), 6.03 (dd, 1 H, J = 1 5.2 Hz and 7.8 Hz), 6.16 (dd, 1 H), J = 1 5.2 Hz and 10.5 Hz), 6.44 (d, 1 H), 7.27 (dd, 1 H, J - 1 5.4 Hz and 10.5 Hz). Preparation 26 Compound 210 Method: General Procedure 9 Starting material: Compound 16 Chromatography eluant: 2.5% ether in pentane 1 H NMR δ 0.06 (m, 12H), 0.69 (s, 3H), 0.85 (s, 9H), 0.89 (s, 9H), 1 .20 (d, 3H), 1 .35-1 .87 (m, 6H), 1 .93 (m, 1 H), 2.07 (m, 1 H), 2.25 (m, 2H), 2.41 (dd, 1 H), 2.58 (dd, 1 H), 2.84 (bd, 1 H), 2.98 (m, 1 H), 3.73 (s, 3H), 4.22 (m, 1 H), 4.54 (m, 1 H), 4.95 (m, 1 H), 4.98 (m, 1 H), 5.41 (m, 1 H), 5.80 (d, 1 H, J = 1 5.4 Hz), 5.91 (d, 1 H), 6.1 1 (m, 2H), 6.44 (d, 1 H), 7.27 (dd, 1 H, J = 1 5.4 Hz and 9.9 Hz). Preparation 27 Compound 21 3 Method: General Procedure 10 Starting material: Compound 1 5 Chromatography eluant: 2.5% ether in petroleum ether 1 H NMR δ 0.05 (m, 12H), 0.67 (s, 3H), 0.85 (s, 9H), 0.90 (s, 9H), 0.80- 0.95 (m, 2H), 1 .07 (m, 2H), 1 .22 (d, 3H), 1 .45-2.35 (m, 1 1 H), 2.41 (dd, 1 H), 2.58 (dd, 1 H), 2.85 (m, 1 H), 3.06 (m, 1 H), 4.22 (m, 1 H), 4.53 (m, 1 H), 4.95 (m, 1 H), 4.98 (m, 1 H), 5.44 (m, 1 H), 5.90 (d, 1 H), 6.20 (dd, 1 H, J -= 1 .0 and 1 5.8 Hz), 6.44 (d, 1 H), 6.82 (dd, 1 H, J = 7.9 and 1 5.8 Hz). Preparation 28 Compound 214 Method: General Procedure 10 Starting material: Compound 16 Chromatography eluant: 2.5% ether in petroleum ether 1 H NMR δ 0.05 (m, 12H), 0.70 (s, 3H), 0.85 (s, 9H), 0.90 (s, 9H), 0.82- 0.95 (m, 2H), 1 .07 (m, 2H), 1 .24 (d, 3H), 1 .35-2.50 (m, 12H), 2.58 (dd, 1 H), 2.84 (bd, 1 H), 3.04 (m, 1 H), 4.22 (m, 1 H), 4.53 (m, 1 H), 4.95 (m, 1 H), 4.98 (m, 1 H), 5.46 (m, 1 H), 5.91 (d, 1 H), 6.18 (dd, 1 H, J - 1 .0 and 1 5.8 Hz), 6.44 (d, 1 H), 6.85 (dd, 1 H, J = 7.7 and 1 5.8 Hz). Preparation 29 Compound 305 Method: General Procedure 1 1 Starting material: Compound 205 Chromatography eluant: 10% ether in pentane 1 H NMR δ 0.05 (m, 12H), 0.68 (s, 3H), 0.85 (s, 9H), 0.89 (s, 9H), 1 .02 (d, 3H), 1 .19 (s, 6H), 1 .10-2.45 (m, 19H), 2.58 (dd, 1 H), 2.85 (m, 1 H), 4.22 (m, 1 H), 4.53 (m 1 H), 4.94 (m, 1 H), 4.98 (m, 1 H), 5.31 (m, 1 H), 5.92 (d, 1 H), 6.45 (d, 1 H). Preparation 30 Compound 306 Method: General Procedure 1 1 Starting material: Compound 206 Chromatography eluant: 10% ether in pentane 1 H NMR δ 0.05 (m, 12H), 0.69 (s, 3H), 0.85 (s, 9H), 0.89 (s, 9H), 1 .05 (d, 3H), 1 .20 (s, 6H), 1 .10-2.45 (m, 19H), 2.58 (dd, 1 H), 2.85 (m, 1 H), 4.22 (m, 1 H), 4.54 (m, 1 H), 4.94 (m, 1 H), 4.99 (m, 1 H), 5.33 (m, 1 H), 5.91 (d, 1 H), 6.45 (d, 1 H). Preparation 31 Compound 307 Method: General Procedure 1 1 Starting material: Compound 207 Chromatography eluant: 10% ether in pentane 1 H NMR δ 0.05 (m, 12H), 0.67 (s, 3H), 0.84 (t, 6H), 0.85 (s, 9H), 0.90 (s, 9H), 1 .01 (d, 3H), 1 .44 (q, 4H), 0.80-2.45 (m, 21 H), 2.58 (dd, 1 H), 2.85 (m, 1 H), 4.22 (m, 1 H), 4.53 (m, 1 H), 4.94 (m, 1 H), 4.98 (m, 1 H), 5.29 (m, 1 H), 5.91 (d, 1 H), 6.45 (d, 1 H). Preparation 32 Compound 308 Method: General Procedure 1 1 Starting material: Compound 208 Chromatography eluant: 10% ether in pentane 1 H NMR δ 0.05 (m, 12H), 0.68 (s, 3H), 0.85 (s, 6H), 0.85 (t, 9H), 0.90 (s, 9H), 1 .04 (d, 3H), 1 .45 (q, 4H), 1 .1 5-2.45 (m, 21 H), 2.59 (dd, 1 H), 2.86 (m 1 H), 4.22 (m, 1 H), 4.54 (m, 1 H), 4.94 (m, 1 H), 4.99 (m, 1 H), 5.32 (m, 1 H), 5.91 (d, 1 H), 6.46 (d, 1 H). Preparation 33 Compound 309 Method: General Procedure 12 Starting material: Compound 209 Organometallic reagent: Methyl lithium Chromatography eluant: 5% ether in petroleum ether Preparation 34 Compound 310 Method: General Procedure 12 Starting material: Compound 210 Organometallic reagent: Methyl lithium Chromatography eluant: 2.5% ether in petroleum ether Preparation 35 Compound 31 1 Method: General Procedure 12 Starting material: Compound 209 Organometallic reagent: Ethyl lithium Chromatography eluant: 5% ether in pentane 1 H NMR δ 0.06 (m, 12H), 0.67 (s, 3H), 0.85 (t, 6H), 0.85 (s, 9H), 0.89 (s, 9H), 1 .16 (d, 3H), 1 .10-1 .87 (m, 1 H), 1 .92 (m, 1 H), 2.04 (m, 1 H), 2.25 (m, 2H), 2.38 (dd, 1 H), 2.59 (dd, 1 H), 2.89 (m, 2H), 4.22 (m, 1 H), 4.53 (m, 1 H), 4.94 (m, 1 H), 4.98 (m, 1 H), 5.38 (m, 1 H), 5.54 (d, 1 H, J = 1 5.3 Hz), 5.59 (dd, 1 H, J = 14.9 Hz and 8.0 Hz), 5.90 (d, 1 H), 6.02 (dd, 1 H, J = 14.9 Hz and 10.3 Hz), 6.1 7 dd, 1 H, J -= 1 5.3 Hz and 10.3 Hz), 6.45 (d, 1 H). Preparation 36 Compound 312 Method: General Procedure 12 Starting material: Compound 210 Organometallic reagent: Ethyl lithium Chromatography eluant: 5% ether in pentane 0.06 (m, 12H), 0.69 (s, 3H), 0.85 (s, 9H), 0.86 (t, 6H), 0.90 (s, 9H), 1 .1 7 (d, 3H), 1 .25-1 .87 (m, 1 1 H), 1 .93 (m, 1 H), 2.05 (m, 1 H), 2.26 (m, 2H), 2.42 (dd, 1 H), 2.59 (dd, 1 H), 2.86 (m, 2H), 4.22 (m, 1 H), 4.54 (m, 1 H), 4.95 (m, 1 H), 4.99 (m, 1 H), 5.38 (m, 1 H), 5.54 (d, 1 H, J = 1 5.3 Hz), 5.64 (dd, 1 H, J = 1 5.0 Hz and 7.7 Hz), 5.91 (d, 1 H), 6.01 (dd, 1 H, J = 15.0 Hz and 10.3 Hz), 6.18 (dd, 1 H, J = 1 5.3 Hz and 10.3 Hz), 6.45 (d, 1 H). Preparation 37 Compound 313 Method: General Procedure 1 3 Starting material: Compound 21 3 Chromatography eluant: 10% ether in petroleum ether 1 H NMR δ 0.05 (m, 12H), 0.22 (m, 1 H), 0.32 (m, 1 H), 0.49 (m, 2H), 0.68 (s, 3H), 0.85 (s, 9H), 0.86 (s, 9H), 0.97 (s, 1 H), 1 .1 5 (d, 3H), 1 .40-2.10 (m, 9H), 2.1 5-2.45 (m, 3H), 2.58 (dd, 1 H), 2.87 (m, 2H), 3.42 (m, 1 H), 4.22 (m, 1 H), 4.53 (m, 1 H), 4.94 (m, 1 H), 5.00 (m, 1 H), 5.37 (m, 1 H), 5.54 (m, 2H), 5.90 (d, 1 H), 6.44 (d, 1 H). Preparation 38 Compound 314 Method: General Procedure 13 Starting material: Compound 214 Chromatography eluant: 10% ether in petroleum ether Preparation 39 Compound 31 5 Method: General Procedure 1 3 Starting material: Compound 213 Chromatography eluant: 10% ether in petroleum ether 1 H NMR δ 0.05 (m, 12H), 0.23 (m, 1 H) 0.32 (m, 1 H), 0.51 (m, 2H), 0.68 (s, 3H), 0.85 (s, 6H), 0.90 (s, 9H), 0.98 (m, 9H), 1 .15 (d, 3H), 1 .45-2.10 (m, 9H), 2.1 7-2.45 (m, 3H), 2.58 (dd, 1 H), 2.87 (m 2H), 3.46 (m, 1 H), 4.22 (m, 1 H), 4.54 (m, 1 H), 4.94 (m, 1 H), 4.98 (m, 1 H), 5.37 (m, 1 H), 5.58 (m, 2H), 5.90 (d, 1 H), 6.45 (d, 1 H). Preparation 40 Compound 316 Method: General Procedure 13 Starting material: Compound 214 Chromatography eluant: 10% ether in petroleum ether. Preparation 41 Compound 401 Method: General Procedure 14 Starting material: Compound 201 Chromatography eluant: 10% ether in pentane 1 H NMR δ 0.06 (m, 12H), 0.71 (s, 3H), 0.86 (s, 9H), 0.87 (s, 9H), 1 .19 (d, 3H), 1 .56 (s, 6H), 1 .1 5-2.70 (m, 14H), 2.82 (m, 1 H), 3.80 (t, 1 H), 4.00 (dd, 1 H), 4.1 9 (m, 1 H), 4.37 (m, 1 H), 4.87 (m, 1 H), 5.18 (m, 1 H), 5.45 (m, 1 H), 6.10 (d, 1 H), 6.23 (d, 1 H), 6.77 (m, 1 H), 7.03 (m, 2H), 7.23 (t, 1 H). Preparation 42 Compound 402 Method: General Procedure 14 Starting material: Compound 202 Chromatography eluant: 10% ether in pentane 1 H NMR δ 0.06 (m, 12H), 0.71 (s, 3H), 0.87 (s, 18H), 1 .22 (d, 3H), 1 .57 (s, 6H), 1 .40-2.1 5 (m, 9H), 2.23 (m, 2H), 2.37 (m, 1 H), 2.45 (dd, 1 H), 2.61 (m, 1 H), 2.82 (m, 1 H), 3.66 (t, 1 H), 4.01 (dd, 1 H), 4.19 (m, 1 H), 4.38 (m, 1 H), 4.88 (m, 1 H), 5.18 (m, 1 H), 5.48 (m, 1 H), 6.1 1 (d, 1 H), 6.23 (d, 1 H), 6.77 m, 1 H), 6.95-7.10 (m, 2H), 7.24 (t, 1 H). Preparation 43 Compound 403 Method: General Procedure 14 Starting material: Compound 203 Chromatography eluant: 10% ether in pentane " Η NMR δ 0.06 (m, 12H), 0.69 (s, 3H), 0.87 (s, 18H), 1 .18 (d, 3H), 1 .55 (s, 6H), 1 .1 5-2.50 (m, 14H), 2.80 (m, 1 H), 2.86 (dd, 1 H), 3.20 (dd, 1 H), 4.18 (m, 1 H), 4.38 (m, 1 H), 4.87 (m, 1 H), 5.19 (m, 1 H), 5.41 (m, 1 H), 6.09 (d, 1 H), 6.22 (d, 1 H), 7.1 5-7.30 (m, 3H), 7.46 (m, 1 H). Preparation 44 Compound 404 Method: General Procedure 14 Starting material: Compound 204 Chromatography eluant: 10% ether in pentane NMR δ 0.05 (m, 12H), 0.66 (s, 3H), 0.86 (s, 9H), 0.87 (s, 9H), 1 .21 (d, 3H), 1 .56 (s, 6H), 1 .30-2.50 (m, 14H), 2.78 (dd, 1 H), 2.80 (m, 1 H), 3.18 (dd, 1 H), 4.18 (m, 1 H), 4.37 (m, 1 H), 4.86 (m, 1 H), 5.18 (m, 1 H), 5.44 (m, 1 H), 6.08 (d, 1 H), 6.22 (d, 1 H), 7.1 5-7.30 (m, 3H), 7.47 (m, 1 H). Preparation 45 Compound 405 Method: General Procedure 14 Starting material: Compound 305 Chromatography eluant: 10% ether in pentane 1 H NMR δ 0.05 (m, 12H), 0.67 (s, 3H), 0.87 (s, 9H), 0.88 (s, 9H), 1 .01 (d, 3H), 1 .18 (s, 6H), 0.80-2.27 (m, 18H), 2.35 (m, 1 H), 2.45 (dd, 1 H), 2.80 (m, 1 H), 4.1 9 (m, 1 H), 4.37 (m, 1 H), 4.87 (m, 1 H), 5.18 (m, 1 H), 5.28 (m, 1 H), 6.09 (d, 1 H), 6.23 (d, 1 H). Preparation 46 Compound 406 Method: General Procedure 14 Starting material: Compound 306 Chromatography eluant: 10% ether in pentane 1 H NMR δ 0.06 (m, 12H), 0.68 (s, 3H), 0.87 (s, 9H), 0.88 (s, 9H), 1 .04 (d, 3H), 1 .20 (s, 6H), 1 .10-2.40 (m, 19H), 2.45 (d, 1 H), 2.80 (m, 1 H), 4.18 (m, 1 H), 4.38 (m, 1 H), 4.87 (m, 1 H), 5,18 (m, 1 H), 5.30 (m, 1 H), 6.10 (d, 1 H), 6.23 (d, 1 H). Preparation 47 Compound 407 Method: General Procedure 14 Starting material: Compound 307 Chromatography eluant: 10% ether in pentane 1 H NMR δ 0.06 (m, 12H), 0.66 (s, 3H), 0.84 (t, 6H), 0.87 (s, 18H), 1 .00 (d, 3H), 1 .44 (q, 4H), 0.75-2.27 (m, 20H), 2.34 (m, 1 H), 2.44 (dd, 1 H), 2.80 (m, 1 H), 4.19 (m, 1 H), 4.38 (m, 1 H), 4.87 (m, 1 H), 5.18 (m, 1 H), 5.27 (m, 1 H), 6.09 (d, 1 H), 6.22 (d, 1 H). Preparation 48 Compound 408 Method: General Procedure 14 Starting material: Compound 308 Chromatography eluant: 10% ether in pentane 1 H NMR δ 0.06 (m, 12H), 0.68 (s, 3H), 0.87 (t, 6H), 0.87 (s, 9H), 0.88 (s, 9H), 1 .02 (d, 3H), 1 .44 (q, 4H), 1 .1 5-2.50 (m, 22H), 2.80 (m, 1 H), 4.1 9 (m, 1 H), 4.38 (m, 1 H), 4.87 (m, 1 H), 5.18 (m, 1 H), 5.29 (m, 1 H), 6.09 (d, 1 H), 6.23 (d, 1 H). Preparation 49 Compound 409 Method: General Procedure 14 Starting material: Compound 309 Chromatography eluant: 5% ether in petroleum ether Preparation 50 Compound 410 Method: General Procedure 14 Starting material: Compound 310 Chromatography eluant: 5% ether in petroleum ether Preparation 51 Compound 41 1 Method: General Procedure 14 Starting material: Compound 31 1 Chromatography eluant: 5% ether in pentane 1 H NMR δ 0.05 (m, 12H), 0.66 (s, 3H), 0.85 (t, 6H), 0.85 (s, 9H), 0.86 (s, 9H), 1 .1 5 (d, 3H), 1 .10-1 .92 (m, 12H), 1 .99 (m, 1 H), 2.18 (m, 2H), 2.33 (dd, 1 H), 2.45 (dd, 1 H), 2.77 (dd, 1 H), 2.90 (m, 1 H), 4.18 (m, 1 H), 4.37 (m, 1 H), 4.87 (m, 1 H), 5.1 7 (m, 1 H), 5.35 (m, 1 H), 5.53 (d, 1 H, J - 1 5.3 Hz), 5.58 (dd, 1 H, J = 14.9 Hz and 8.0 Hz), 5.95-6.27 (m, 4H). Preparation 52 Compound 412 Method: General Procedure 14 Starting material: Compound 312 Chromatography eluant: 5% ether in pentane 1 H NMR δ 0.05 (m, 12H), 0.68 (s, 3H), 0.86 (s, 9H), 0.87 (s, 9H), 0.83- 0.95 (t, 6H), 1 .16 (d, 3H), 1 .10-2.30 (m, 15H), 2.36 (dd, 1 H), 2.44 (dd, 1 H), 2.79 (m, 1 H), 2.88 (m, 1 H), 4.18 (m, 1 H), 4.37 (m, 1 H), 4.87 (m, 1 H), 5.1 7 (m, 1 H), 5.35 (m, 1 H), 5.53 (d, 1 H, J = 1 5.4 Hz), 5.64 (dd, 1 H, J = 7.7 and 1 5.0 Hz), 5.92- 6.25 (m, 4H). Preparation 53 Compound 413 Method: General Procedure 14 Starting material: Compound 313 Chromatography eluant: 10% ether in petroleum ether 1 H NMR δ 0.05 (m, 12H), 0.23 (m, 1 H), 0.31 (m, 1 H), 0.50 (m, 2H), 0.67 (s, 3H), 0.86 (s, 9H) 0.87 (s, 9H), 0.97 (s, 1 H), 1 .14 (d, 3H), 1 .30-2.07 (m, 9H), 2.20 (m, 2H), 2.32 (m, 1 H), 2.44 (dd, 1 H), 2.79 (m, 1 H), 2.89 (m, 1 H), 3.42 (m, 1 H), 4.19 (m, 1 H), 4.37 (m, 1 H), 4.87 (m, 1 H), 5.1 7 (m, 1 H), 5.35 (m, 1 H), 5.54 (m, 2H), 6.08 (d, 1 H), 6.22 (d, 1 H). Preparation 54 Compound 414 Method: General Procedure 14 Starting material: Compound 314 Chromatography eluant: 10% ether in petroleum ether Preparation 55 Compound 41 5 Method: General Procedure 14 Starting material: Compound 315 Chromatography eluant: 10% ether in petroleum ether " Η NMR δ 0.05 (m, 12H), 0.23 (m, 1 H), 0.31 (m, 1 H), 0.50 (m, 2H), 0.67 (s, 3H), 0.86 (s, 9H), 0.87 (s, 9H), 1 .14 (d, 3H), 0.90-2.05 (m, 10H), 2.19 (m, 2H), 2.33 (m, 1 H), 2.44 (dd, 1 H), 2.79 (m, 1 H), 2.89 (m, 1 H), 3.46 (m, 1 H), 4.18 (m, 1 H), 4.36 (m, 1 H), 4.87 (m, 1 H), 5.1 7 (m, 1 H), 5.34 (m, 1 H), 5.57 (m, 2H), 6.08 (d, 1 H), 6.22 (d, 1 H). Preparation 56 Compound 41 6 Method: General Procedure 14 Starting material: Compound 316 Chromatography eluant: 10% ether in petroleum ether Examples Example 1 : 1 (S),3(R)-Dihvdroxy-20(S)-(3-(1 -hydroxy- 1 -methyl- ethyl)phenoxymethyl)-9, 10-seco-pregna-5(Z),- 7(E),10(19),16-tetraene (Compound 101 ) Method: General Procedure 15 Starting material: Compound 401 Chromatography eluant: 30% pentane in ethyl acetate. 1 H NMR δ 0.73 (s, 3H), 1 .20 (d, 3H), 1 .57 (s, 6H), 1 .1 5-1 .97 (m, 9H), 2.04 (m, 2H), 2.1 7-2.45 (m, 3H), 2.60 (m, 2H), 2.83 (dd, 1 H), 3.81 (t, 1 H), 4.00 (dd, 1 H), 4.23 (m, 1 H), 4.43 (m, 1 H), 5.01 (m, 1 H), 5.33 (m, 1 H), 5.45 (m, 1 H), 6,12 (d, 1 H), 6.37 (d, 1 H), 6.77 (m, 1 H), 7.04 (m, 2H), 7.24 (t, 1 H). Example 2: 1 (S),3(R)-Dihvdroxy-20(R)-(3-(1 -hydroxy- 1 -methyl- ethyl)phenoxymethyl)-9,10-seco-pregna-5(Z),7(E),- 10(19),16-tetraene (Compound 102) Method: General Procedure 1 5 Starting material: Compound 402 Chromatography eluant: 30% pentane in ethyl acetate. 1 H NMR δ 0.73 (s, 3H), 1 .23 (d, 3H), 1 .57 (s, 6H), 1 .45-1 .97 (m, 9H), 2.05 (m, 2H), 2.1 5-2.45 (m, 3H), 2.60 (m, 2H), 2.83 (m, 1 H), 3.67 (t, 1 H), 4.00 (dd, 1 H), 4.23 (m, 1 H), 4.43 (m, 1 H), 5.02 (m, 1 H), 5.34 (m, 1 H), 5.49 (m, 1 H), 6.12 (d, 1 H), 6.37 (d, 1 H), 6.77 (m, 1 H), 7.04 (m, 2H), 7.24 (t, 1 H). Example 3: 1 (S),3(R)-Dihvdroxy-20(S)-(3-(1 -hydroxy- 1 -methyl- ethyl)phenylthiomethyl)-9,10-seco-pregna-5(Z),- 7(E),10(19),16-tetraene (Compound 103) Method: General Procedure 15 Starting material: Compound 403 Chromatography eluant: 30% pentane in ethyl acetate. 1 H NMR δ 0.71 (s, 3H), 1 .19 (d, 3H), 1 .56 (s, 6H), 1 .1 5-2.50 (m, 1 5H), 2.58 (dd, 1 H), 2.81 (dd 1 H), 2.87 (dd, 1 H), 3.19 (dd, 1 H), 4.23 (m, 1 H), 4.43 (m, 1 H), 5.00 (m, 1 H), 5.33 (m, 1 H), 5.42 (m, 1 H), 6.1 1 (d, 1 H), 6.36 (d, 1 H), 7.1 5- 7.30 (m, 3H), 7.46 (m, 1 H). Example 4: 1 (S),3(R)-Dihvdroxy-20(R)-(3-(1 -hydroxy- 1 -methyl- ethyl)phenylthiomethyl)-9,10-seco-pregna-5(Z),7(E),- 10(19), 16-tetraene (Compound 104) Method: General Procedure 1 5 Starting material: Compound 404 Chromatography eluant: 30% pentane in ethyl acetate. 1 H NMR δ 0.68 (s, 3H), 1 .22 (d, 3H), 1 .57 (s, 6H), 1 .30-2.50 (m, 1 5H), 2.60 (dd, 1 H), 2.80 (dd, 1 H), 2.82 (m, 1 H), 3.18 (dd, 1 H), 4.23 (m, 1 H), 4.44 (m, 1 H), 5.00 (m, 1 H), 5.33 (m, 1 H), 5.46 (m, 1 H), 6.10 (d, 1 H), 6.36 (d, 1 H), 7.1 5- 7.30 (m, 3H), 7.48 (m, 1 H). Example 5: 1 (S),3(R)-Dihvdroxy-20(R)-(4-hvdroxy-4-methyl- pent-1 -yl)-9,10-seco-pregna-5(Z),7(E),10(19),16- -tetraene (Compound 105) Method: General Procedure 1 5 Starting material: Compound 405 Chromatography eluant: 40% pentane in ethyl acetate. 1 H NMR δ 0.69 (s, 3H), 1 .02 (d, 3H), 1 .19 (s, 6H), 0.80-2.40 (m, 21 H), 2.60 (dd, 1 H), 2.82 (m, 1 H), 4.22 (m, 1 H), 4.44 (m, 1 H), 5.02 (m, 1 H), 5.29 (m, 1 H), 5.34 (m, 1 H), 6.1 1 (d, 1 H), 6.38 (d, 1 H). Example 6: 1 (S).3(R)-Dihvdroxy-20(S)-(4-hydroxy-4-methyl- pent-1 -yl)-9.10-seco-pregna-5(Z),7(E).10(1 9).16- -tetraene (Compound 106) Method: General Procedure 1 5 Starting material: Compound 406 Chromatography eluant: 30% pentane in ethyl acetate. 1 H NMR δ 0.70 (s, 3H), 1 .05 (d, 3H), 1 .21 (s, 6H), 1 .1 5-2.40 (m, 21 H), 2.60 (m, 1 H), 2.82 (m, 1 H), 4.24 (m, 1 H), 4.42 (m, 1 H), 5.01 (m, 1 H), 5.33 (m, 2H), 6.10 (d, 1 H), 6.37 (d, 1 H). Example 7: 1 (S),3(R)-Dihvdroxy-20(R)-(5-ethyl-5-hvdroxy- hept-1 -yl)-9,10-seco-pregna-5(Z),7(E),10(19),16- -tetraene (Compound 107) Method: General Procedure 1 5 Starting material: Compound 407 Chromatography eluant: 40% pentane in ethyl acetate. 1 H NMR δ 0.68 (s, 3H), 0.85 (t, 6H), 1 .01 (d, 3H), 1 .45 (q, 4H), 0.80-2.45 (m, 23H), 2.60 (m, 1 H), 2.82 (m, 1 H), 4.23 (m, 1 H), 4.44 (m, 1 H), 5.02 (m, 1 H), 5.28 (m, 1 H), 5.34 (m, 1 H), 6.1 1 (d, 1 H), 6.38 (d, 1 H). Example 8: 1 (S),3(R)-Dihvdroxy-20(S)-(5-ethyl-5-hvdroxy- hept-1 -yl)-9.10-seco-pregna-5(Z),7(E).10(19),16- -tetraene (Compound 108) Method: General Procedure 1 5 Starting material: Compound 408 Chromatography eluant: 40% pentane in ethyl acetate. 1 H NMR δ 0.70 (s, 3H), 0.85 (t, 6H), 1 .03 (d, 3H), 1 .45 (q, 4H), 1 .00-2.40 (m, 23H), 2.60 (dd, 1 H), 2.81 (m, 1 H), 4.23 (m, 1 H), 4.43 (m, 1 H), 5.01 (m, 1 H), 5.31 (m, 1 H), 5.33 (m, 1 H), 6.1 1 (d, 1 H), 6.37 (d, 1 H). Example 9: 1 (S),3(R)-Dihvdroxy-20(R)-(5-hvdroxy-5-methyl- hexa-1 (E),3(E)-dien-1 -yl)-9,10-seco-pregna- -5(Z).7(E),10(19),16-tetraene (Compound 109) Method: General Procedure 16 Starting material: Compound 409 Example 10: 1 (S).3(R)-Dihvdroxy-20(S)-(5-hvdroxy-5-methyl- hexa-1 (E),3(E)-dien-1 -yl)9, 10-seco-pregna- -5(Z),7(E),10(19),16-tetraene (Compound 1 10) Method: General Procedure 15 Starting material: Compound 410 Example 1 1 : 1 (S),3(R)-Dihvdroxy-20(R)-(5-ethyl-5-hvdroxyhepta- 1 (E).3(E)-dien-1 -yl)-9,10-seco-pregna- -5(Z).7(E), 10(19), 16-tetraene (Compound 1 1 1 ) Method: General Procedure 16 Starting material: Compound 41 1 1 H NMR δ 0.68 (s, 3H), 0.86 (t, 6H), 1 .16 (d, 3H), 1 .56 (q, 4H), 1 .35-2.43 (m, 14H), 2.59 (dd, 1 H), 2.80 (dd, 1 H), 2.91 (m, 1 H), 4.23 (m, 1 H), 4.43 (m, 1 H), 5.00 (m, 1 H), 5.33 (m, 1 H), 5.37 (m, 1 H), 5.55 (d, 1 H, J = 1 5.4 Hz), 5.58 (dd, 1 H, J = 14.9 Hz and 8.0 Hz), 5.95-6.25 (m, 3H), 6.36 (d, 1 H). Example 12: 1 (S),3(R)-Dihvdroxy-20(S)-(5-ethyl-5-hvdroxyhepta- 1 (E).3(E)-dien-1 -yl)-9,10-seco-pregna-5(Z).7(E),10- (19).16-tetraene (Compound 1 12) Method: General Procedure 16 Starting material: Compound 412 1 H NMR δ 0.71 (s, 3H), 0.86 (t, 6H), 1 .1 7 (d, 3H), 0.83-2.45 (m, 18H), 2.60 (dd, 1 H), 2.80 (m, 1 H), 2.89 (m, 1 H), 4.23 (m, 1 H), 4.44 (m, 1 H), 5.01 (m, 1 H), 5.33 (m, 1 H), 5.37 (m, 1 H), 5.55 (d, 1 H, J = 1 5.3 Hz), 5.64 (dd, 1 H, J = 7.7 and 1 5.0 Hz), 6.01 (dd, 1 H, J = 10.3 and 15.0 Hz), 6.1 1 (d, 1 H), 6.18 (dd, 1 H, J = 10.3 and 1 5.3 Hz), 6.37 (d, 1 H). Example 1 3: 1 (S),3(R)-Dihvdroxy-20(R)-(3-cvclo-propy|-3- -hvdroxyprop-1 (E)-en-1 -yl)-9,10-seco-pregna-5(Z),7(E),- 10(19),16-tetraene (24(S)-isomer) (Compound 1 1 3) Method: General Procedure 16 Starting material: Compound 413 1 H NMR δ 0.23 (m, 1 H), 0.32 (m, 1 H), 0.51 (m, 2H), 0.70 (s, 3H), 0.99 (m, 1 H), 1 .1 5 (d, 3H), 1 .10-2.40 (m, 14H), 2.59 (dd, 1 H), 2.80 (dd, 1 H), 2.90 (m, 1 H), 3.42 (m, 1 H), 4.23 (m, 1 H), 4.43 (m, 1 H), 5.00 (m, 1 H), 5.33 (m, 1 H), 5.37 (m, 1 H), 5.55 (m, 2H), 6.10 (d, 1 H), 6.36 (d, 1 H). Example 14: 1 (S).3(R)-Dihvdroxy-20(S)-(3-cvclo-propyl-3- -hvdroχyprop-1 (E)-en-1 -yl)-9, 10-seco-pregna- -5(Z),7(E),10(19),16-tetraene (24(S)-isomer) (Compound 1 14) Method: General Procedure 16 Starting material: Compound 414 Example 1 5: 1 (S),3(R)-Dihvdroxy-20(R)-(3-cvclo-propyl-3- -hydroxyprop-1 (E)-en-1 -yl)-9, 10-seco-pregna- -5(Z).7(E),10(19),16-tetraene (24(R)-isomer) (Compound 1 15) Method: General Procedure 16 Starting material: Compound 41 5 1 H NMR δ 0.23 (m, 1 H), 0.32 (m, 1 H), 0.51 (m, 2H), 0.70 (s, 3H), 0.99 (m, 1 H), 1 .1 5 (d, 3H), 1 .12-2.45 (m, 14H), 2.60 (bd, 1 H), 2.80 (m, 1 H), 2.90 (m, 1 H), 3.46 (m, 1 H), 4.23 (m, 1 H), 4.44 (m, 1 H), 5.00 (m, 1 H), 5.33 (m, 1 H), 5.36 (m, 1 H), 5.58 (m, 2H), 6.10 (d, 1 H), 6.36 (d, 1 H). Example 16: 1 (S),3(R)-Dihvdroxy-20(S)-(3-cvclo-propyl-3- -hydroxyprop-1 (E)-en-1 -yl)-9, 10-seco-pregna- -5(Z).7(E).10(19),16-tetraene (24(R)-isomer) (Compound 1 16) Method: General Procedure 16 Starting material: Compound 416 Example 1 7 Capsules containing Compound 1 1 1 Compound 1 1 1 was dissolved in arachis oil to a final concentration of 1 μg of Compound 1 1 1/ml oil. 10 Parts by weight of gelatine, 5 parts by weight glycerine, 0.08 parts by weight potassium sorbate, and 14 parts by weight distilled water were mixed together with heating and formed into soft gelatine capsules. These were then filled each with 100 μl of Compound 1 1 1 in oil solution, such that each capsule contained 0.1 μg of Compound 1 1 1 . Example 18 Dermatological Cream Containing Compound 1 1 1 In 1 g almond oil was dissolved 0.05 mg of Compound 1 1 1 . To this solution was added 40 g of mineral oil and 20 g of self-emulsifying beeswax. The mixture was heated to liquify. After the addition of 40 ml hot water, the mixture was mixed well. The resulting cream contains approximately 0.5 μg of Compound 1 1 1 per gram of cream.

Claims: WHAT WE CLAIM IS: A compound of the formula I in which formula Q is a C- | -C^ hydrocarbylene diradical; Y is either a single bond, a carbonyl group or a methylene, ethylene, -CH(OH)-, -O-fCg^)- (ortho, meta, 1 9 para) or -S-(CgH4)- (ortho, meta, para) diradical; R and R , which may be the 1 9 same or different, stand for hydrogen or a C- Cg hydrocarbyl radical; or R and R , when taken together with the carbon atom (starred in formula I) bearing the group Z, can form a C 3 -C β carbocyclic ring; and Z is hydrogen or hydroxy; with the 1 9 proviso that when, at the same time, Q is ethylene, Y is methylene, R and R stand for methyl or trifluoromethyl, and Z is hydroxy, or when, at the same time, Q 1 9 is ethylene, Y stands for carbonyl or -CH(OH)-, R and R are methyl, and Z is hydroxy, then the configuration at C-20 cannot be R. 2. A diastereoisomer of a compound according to claim 1 , in pure form; or a mixture of diastereoisomers of a compound according to claim 1 . 3. A compound according to claim 1 which is: a) 1 (S),3(R)-Dihydroxy-20(S)-(3-(1-hydroxy-1 -methylethyl)phenoxymethyl)-9,10- secopregna-5(Z),7(E),10(19),16-tetraene or the corresponding 20(R) isomer, b) 1 (S),3(R)-Dihydroxy-20(S)-(3-(1-hydroxy-1 -methylethyl)phenylthiomethyl)- 9,10-secopregna-5(Z),7(E),10(19),16-tetraene or the corresponding 20(R) isomer, c) 1 (S),3(R)-Dihydroxy-20(S)-(4-hydroxy-4-methylpent-1-yl)-9, 10-secopregna - 5(Z),7(E),10(19), 16-tetraene, d) 1 (S),3(R)-Dihydroxy-20(R)-(5-ethyl-5-hydroxyhept-1 -yl)-9,10-secopregna- 5(Z),7(E),10(19),16-tetraene or the corresponding 20(S) isomer, e) 1 (S),3(R)-Dihydroxy-20(R)-(5-ethyl-5-hydroxyhepta-1 (E),3(E)-dien-1 -yl)-9,10- secopregna-5(Z),7(E),10(19),16-tetraene or the corresponding 20(S) isomer, f) 1 (S),3(R)-Dihydroxy-20(R)-(3-cyclopropyl-3-hydroxyprop-1 (E)-en-1 -yl)-9,10- secopregna-5(Z),7(E),10(19),16-tetraene (24(S) isomer) or the corresponding 24(R) isomer. 4. A method for producing a compound of formula I of claim 1 by which: a) the side chain attached to C-20 in compound I is elaborated from the 20(S) and 20(R) isomers of 1 (S),3(R)-bis-(tert-butyldimethylsilyloxy)-20-p-toluenesulfonyl- oxymethyl-9,10-secopregna-5(E),7(E),10(19),16-tetraene, either (i) by reaction with a side chain building block H-X-R 3 (X is 0 or S, R 3 is -C5H4-CR 1 R 2 Z 1 (meta), and Z 1 is hydroxy or protected hydroxyl) in the presence of a base (e.g. NaH) in a solvent (e.g. DMF), or (ii) by reaction with a Grignard reagent R -Mg-Hal (R 4 is CH 2 -(CH 2 ) n - CR 1 R Z^ , n is 2, 3 or 4, l is as defined above, and Hal is Cl or Br) in the presence of Li 2 CuCl4 in a solvent (e.g. THF), and b) the compound from step (a) above is optionally (i) separated from diastereo- isomers (e.g. by chromatography), (ii) subjected to a triplet-sensitized photoisomeri- sation to the 5(Z) isomer, (iii) desilylated (e.g. with tetrabutylammonium fluoride, and (iv) otherwise deprotected; the order of these options being arbitrary. 5. A method of producing a compound of formula I of claim 1 by which: a) the side chain attached to C-20 in compound I is elaborated from the 20(S) and 20(R) isomers of 1 (S),3(R)-bis-(tert-butyldimethylsilyloxy)-20-formyl-9,10- secopregna-5(E), 7(E), 10(19), 16-tetraene, either (i) by reaction with a Wittig-type reagent (e.g. (EtO) 2 P(0)-CH(Li)-CH = CH-COOCH 3 ) followed by reaction of the resulting ester with an organometallic reagent (e.g. R 1 Li), or (ii) by reaction with a Wittig-type reagent (e.g. Ph 3 P + -CH _ -CO-CH-CH 2 -CH 2 ) followed by reaction of the resulting i I ketone with a reducing agent (e.g. NaBH4) in the presence of CeCI 3 , and b) the compound from step (a) above is optionally (i) separated from diastereo- isomers (e.g. by chromatography), (ii) subjected to a triplet-sensitized photoisomeri- sation to the 5(Z) isomer, (iii) desilylated (e.g. with tetrabutylammonium fluoride), and (iv) otherwise deprotected; the order of these options being arbitrary. 6. An intermediate for the synthesis of compounds of formula I and analogues thereof which is: a) 1 (S),3(R)-bis-(tert-butyldimethylsilyloxy)-20(S)-hydroxymethyl-9,10-seco- pregna-5(E),7(E),10(19),16-tetraene or the corresponding 20(R) isomer, b) 1 (S),3(R)-bis-(tert-butyldimethylsilyloxy)-20(S)-p-toluenesulfonyloxymethyl- 9, 10-secopregna-5(E),7(E),10(19),16-tetraene or the corresponding 20(R) isomer, c) 1 (S),3(E)-bis-(tert-butyldimethylsilyloxy)-20(S)-formyl-9, 10-secopregna- 5(E),7(E), 10(19),16-tetraene or the corresponding 20(R) isomer. 7. A pharmaceutical composition containing an effective amount of one or more of the compounds of claims 1-3, together with pharmaceutically acceptable, non-toxic carriers and/or auxiliary agents. 8. A pharmaceutical composition according to claim 7 in dosage unit form containing from 0.1 ppm to 0.1 % by weight of the dosage unit of a compound of formula I. 9. A method for the treatment or prophylaxis of hyperparathyroidism, particularly secondary hyperparathyroidism associated with renal failure, of diseases characterized by abnormal cell differentiation and/or cell proliferation such as cancer, leukemia, myelofibrosis, and psoriasis, of a number of disease states including diabetes mellitus, hypertension, acne, alopecia, skin ageing, AIDS, neurodegenerative disorders such as Alzheimer's disease, host versus graft reactions, rejection of transplants, inflammatory diseases such as rheumatoid arthritis and asthma, for prevention and/or treatment of steroid induced skin atrophy, and for promoting osteogenesis and treating osteoporosis consisting in administering to a patient in need thereof an effective amount of a pharmaceutical composition according to claim 7. 10. The use of any one of claims 1-3 in the manufacture of a medicament for the treatment or prophylaxis of hyperparathyroidism, particularly secondary hyperparathyroidism associated with renal failure, of diseases characterized by abnormal cell differentiation and/or cell proliferation such as cancer, leukemia, myelofibrosis, and psoriasis, of a number of disease states including diabetes mellitus, hypertension, acne, alopecia, skin ageing, AIDS, neurodegenerative disorders such as Alzheimer's disease, host versus graft reactions, rejection of transplants, inflammatory diseases such as rheumatoid arthritis and asthma, for prevention and/or treatment of steroid induced skin atrophy, and for promoting osteogenesis and treating osteoporosis

Inventors: VON DAEHNE WELF, VON DAEHNE, WELF
Applicants: LEO PHARM PROD LTD, VON DAEHNE WELF, LEO PHARMACEUTICAL PRODUCTS LTD. A/S (LOEVENS KEMIS, VON DAEHNE, WELF
Application year: 1997
Main classification: C07C401
IPC codes: A61K31, A61P3, A61P9, A61P11, A61P13, A61P17, A61P19, A61P25, A61P29, A61P35, A61P37, C07C401