Abstract:
This invention relates to new agents designated LL-F28249α, LL-F28249β, LL-F28249γ, LL-F28249δ, LLF28249ε, LL-F28249ζ, LL-F28249η, LL-F28249θ, LL-F28249ι, LL-F28249κ, LL-F28249λ, LL-F28249μ, LL-F28249ν, and LL-F28249ω, to their production by fermentation, to methods for their recovery and concentration from crude solutions, to processes for their purification and to pharmaceutically and pharmacologically-acceptable salts thereof. The present invention includes within its scope the biologically pure culture which produces there agents, derived from a newly-discovered and previously uncultured microorganism, Streptomyces cyaneogriseus subsp. noncyanogenus, NRRL 15773.

Description:
This application is a continuation-in-part of application Ser. No. 06/617,650, filed Jun. 5, 1984, abandoned. 
    
    
     BACKGROUND OF THE INVENTION 
     The present invention relates to new antibiotic compounds, collectively identified as LL-F28249, which are produced by the fermentation of a nutrient medium with the strain of the microorganism Streptomyces cyaneogriseus subsp. noncyanogenus LL-F28249, NRRL No. 15773 and to the pharmaceutically and pharmacologically-acceptable salts thereof. 
     SUMMARY OF THE INVENTION 
     The culture of Streptomyces cyaneogriseus subsp. noncyanogenus (LL-F28249 and deposited under NRRL No. 15773 and hereinafter referred to as Streptomyces cyaneogriseus noncyanogenus) which produces the agents α, β, γ, δ, ε, ζ, η, θ, ι, κ, λ, μ, ν and ω components was isolated from mallee sand found in southern Australia. 
     The structure and stereochemistry of LL-F28249, have not been fully defined, but the proposed structures are shown below. Component LL-F28249 was related to Hondamycin (Albimycin) which is disclosed in The Journal of Antibiotics, 22, No. 11, 521-526 (1969). 
     The strain is assigned to the genus Streptomyces based upon morphology and cell chemistry (content of the Lisomer of diaminopimelic acid). The strain&#39;s morphology and physiological data place it close to S. cyaneogriseus, as represented by ISP 5534 (ATCC 27426). Then, comparisons of the formation of gray aerial mycelium soluble pigments on media (Table A) and coiled chains of smooth conidia (3-25 spores per chain) were made. The present strain is negative for blue soluble pigment wherein the comparison strain, ISP 5534, is positive. The strains have similar reactions in the ISP carbohydrate utilization tests indicating positive for arabinose, fructose, glucose, rhamnose and xylose, while indicating negative for inositol, mannitol, raffinose and sucrose (ISP 5534) slightly positive). However, the strains differ in several characters (Table B) out of 53 in the Gordon tests. These differences support the creation of a subspecies of S. cyaneogriseus for the present microorganism. 
     
                       TABLE A______________________________________Comparison of F 28249 and ISP 5534 on ISP MorphologyTest Media(Numbers are from NBS-ISCC)Medium        F 28249        ISP 5534______________________________________Yeast-Malt     A.m..sup.1             Medium gray    Light to(ISP 2)           (265)          medium gray                            (264-265)     V.m.    Light tannish (75)                            Light tannish-             Deep yellow-brown                            white to black-                            ish-blue (188)     S.p.    Light brown    Light brownInorganic salts     A.m.    Light olive-gray (112                            Medium graystarch            to medium gray (265                            (265)(ISP 4)   V.m.    Deep gray to black                            Gray-purplish-             (266-267)      blue (204)     S.p.    Grayish-yellowish-                            None             brownGlycerol- A.m.    263 (white) to 263 (white) toAsparagine        yellowish-gray (93)                            light gray (264)(ISP 5)   V.m.    Black (267) to light                            Gray-purplish-             olive brown (96)                            blue (203-204)     S.p.    Slight brownish                            Light yellow-                            ish-grayOatmeal   A.m.    Yellow-gray (93)                            None(ISP 3)   V.m.    Colorless      Colorless     S.p.    Slight yellowish                            None______________________________________ .sup.1 = A.m., aerial mycelium; V.m. = vegetative mycelium; S.p. = Soluble pigment 
    
     
                       TABLE B______________________________________Comparison of Lederle F 28249 with ISP 5534 (Gordon Tests)           F28249                 ISP 5534______________________________________Growth on/atSalicin           ±    -10°        -       +45°        +       -Production ofUrease            +       -Decarboxylation ofMucate            -       +Acid ProductionRaffinose         -       +Sucrose           -       +______________________________________Both strains have the following reactions:Positive  Hydrolysis of casein, hypoxanthine, xanthine, tyrosine,  adrenine, potato starch, gelatin, and esculin;  Production to phosphatase  Sensitivity to lysozyme  Decarboxylation of acetate, citrate, lactate, malate,  oxalate and propionate  Acid production from arabinose, cellobiose, dextrin,  fructose, galactose, glucose, glycerol, lactose, maltose,  mannose, α-methyl D-glucoside, rhamnose, salicin,  trehalose.Negative  Production of nitrate reductase  Decarboxylation of benzoate and tartrate  Acid from adonitol, dulcitol, erythritol, inositol,  mannitol, sorbitol, β-methyl-D-xyloside.  Growth on 5% NaCl 
    
     
         __________________________________________________________________________ ##STR1##LL-F28249α-μComponent  R.sub.1        R.sub.2           R.sub.3                R.sub.4                     R.sub.5                        R.sub.6                             R.sub.5 + R.sub.6                                    AB   BC__________________________________________________________________________LL-F28249α  CH(CH.sub.3).sub.2        H  CH.sub.3                CH.sub.3     OCH.sub.2                                    CHCH CHCLL-F28249β  CH.sub.3        H  CH.sub.3                CH.sub.3     OCH.sub.2                                    CHCH CHCLL-F28249γ  CH.sub.3        CH.sub.3           CH.sub.3                CH.sub.3      OCH.sub.2                                    CHCH CHCLL-F28249δ  CH.sub.3        CH.sub.3           CH.sub.3                CH.sub.3                     OH CH.sub.2 OH CHCH CHCLL-F28249ε  CH(CH.sub.3).sub.2        H  H    CH.sub.3     OCH.sub.2                                    CHCH CHCLL-F28249ζ  CH.sub.2 CH.sub.3        H  CH.sub.3                CH.sub.3     OCH.sub.2                                    CHCH CHCLL-F28249η  CH(CH.sub.3).sub.2        H  CH.sub.3                CH.sub.3     OCH.sub.2                                    CCH  CHCHLL-F28249θ  CH(CH.sub.3).sub.2        H  CH.sub.3                CH.sub.2 CH.sub.3                             OCH.sub.2                                    CHCH CHCLL-F28249ι  CH(CH.sub.3).sub.2        H  CH.sub.2 CH.sub.3                CH.sub.3     OCH.sub.2                                    CHCH CHCLL-F28249κ  CH.sub.3        CH.sub.3           CH.sub.3                CH.sub.3                     H  CH.sub.3    CHCH CHCLL-F28249λ  CH(CH.sub.3).sub.2        CH.sub.3           CH.sub.3                CH.sub.3     OCH.sub.2                                    CHCH CHCLL-F28249μ  CH(CH.sub.3).sub.2        CH.sub.3           CH.sub.3                CH.sub.3                     H  CH.sub.3    CHCH CH C__________________________________________________________________________ ##STR2##LL-F28249ν ##STR3##LL-F28249ω__________________________________________________________________________ 
    
     It is an object of this invention to provide α, β, γ, δ, ε, ζ, η, θ, ι, κ, λ, μ, ν, and ω compounds described and derived from Streptomyces cyaneogriseus noncyanogenus, NRRL 15773, and a method of their production by fermentation. It is a further object to provide methods for their recovery and concentration from crude solutions to purify said compounds. These substances have significant activity against helmintic, ectoparasitic and acaridal infections, and thus, are useful in so treating warmblooded animals afflicted with these infections, as well as treating plants inflicted with nematodes. The utility of the presently disclosed fermentation broth and, whole mash of the microorganism Streptomyces cyaneogriseus noncyanogenus NRRL 15773, and its components α, β, γ, δ, ε, ζ, η, θ, ι, κ, λ, μ, ν and ω is described in U.S. patent application of Irwin Boyden Wood and John Anthony Pankauch, Ser. No. 617,649, and continuation-in-part U.S. patent application of Irwin Boyden Wood and John Anthony Pankauch, Ser. No. 732,251, filed concurrently herewith and incorporated herein by reference thereto. 
     These and further objects will become apparent by the description of the drawings and detailed description of the invention which follow. 
    
    
     DESCRIPTION OF THE DRAWINGS 
     FIG. 1: Characteristic ultraviolet absorption spectrum of compound designated LL-F28249α, NRRL 15773. 
     FIG. 2: Characteristic infrared absorption spectrum of compound designated LL-F28249α, NRRL 15773. 
     FIG. 3: Characteristic proton nuclear magnetic resonance spectrum of compound designated LL-F28249α, NRRL 15773, in CDCl 3  solution. 
     FIG. 4: Characteristic carbon-13 nuclear magnetic resonance spectrum of compound designated LL-F28249α, NRRL 15773, in CDCl 3  solution. 
     FIG. 5: Characteristic electron impact mass spectrum of compound designated LL-F28249α, NRRL 15773. 
     FIG. 6: Characteristic ultraviolet absorption spectrum of compound designated LL-F28249β, NRRL 15773. 
     FIG. 7: Characteristic infrared absorption spectrum of compound designated LL-F28249β, NRRL 15773. 
     FIG. 8: Characteristic proton nuclear magnetic resonance spectrum of compound designated LL-F28249β, NRRL 15773, in CDCl 3 . 
     FIG. 9: Characteristic electron impact mass spectrum of compound designated LL-F28249β, NRRL 15773. 
     FIG. 10: Characteristic ultraviolet absorption spectrum of compound designated LL-F28249γ, NRRL 15773. 
     FIG. 11: Characteristic infrared absorption spectrum of compound LL-F28249γ, NRRL 15773. 
     FIG. 12: Characteristic proton nuclear magnetic resonance spectrum of compound LL-F28249γ, NRRL 15773, in CDCl 3 . 
     FIG. 13: Characteristic carbon-13 nuclear magnetic resonance spectrum of compound designated LL-F28249γ, NRRL 15773, in CDCl 3 . 
     FIG. 14: Characteristic electron impact mass spectrum of compound designated LL-F28249γ, NRRL 15773. 
     FIG. 15: Characteristic ultraviolet absorption spectrum of compound designated LL-F28249ω, NRRL 15773. 
     FIG. 16: Characteristic infrared absorption spectrum of compound designated LL-F28249ω, NRRL 15773. 
     FIG. 17: Characteristic proton nuclear magnetic resonance spectrum of compound designated LL-F28249ω, NRRL 15773, in CDCl 3 . 
     FIG. 18: Characteristic nuclear magnetic resonance spectrum of compound designated LL-F28249ω, NRRL 15773, in CDCl 3 . 
     FIG. 19: Characteristic electron impact mass spectrum of compound designated LL-F28249ω, NRRL 15773. 
     FIG. 20: Characteristic ultraviolet absorption spectrum of compound designated LL-F28249δ, NRRL 15773. 
     FIG. 21: Characteristic proton nuclear magnetic resonance spectrum of compound designated LL-F28249δ, NRRL 15773, in CDCl 3 . 
     FIG. 22: Characteristic electron impact mass spectrum of compound designated LL-F28249δ, NRRL 15773. 
     FIG. 23: Characteristic ultraviolet absorption spectrum of compound designated LL-F28249ε, NRRL 15773. 
     FIG. 24: Characteristic proton nuclear magnetic resonance spectrum of compound designated LL-F28249ε, NRRL 15773, in CDCl 3 . 
     FIG. 25: Characteristic electron impact mass spectrum of compound designated LL-F28249ε, NRRL 15773. 
     FIG. 26: Characteristic proton nuclear magnetic resonance spectrum of compound designated LL-F28249ζ, NRRL 15773, in CDCl 3 . 
     FIG. 27: Characteristic electron impact mass spectrum of compound designated LL-F28249ζ, NRRL 15773. 
     FIG. 28: Characteristic ultraviolet absorption spectrum of compound designated LL-F28249η, NRRL 15773. 
     FIG. 29: Characteristic proton nuclear magnetic resonance spectrum of compound designated LL-F28249η, NRRL 15773, in CDCl 3 . 
     FIG. 30: Characteristic electron impact mass spectrum of compound designated LL-F28249η, NRRL 15773. 
     FIG. 31: Characteristic ultraviolet absorption spectrum of compound designated LL-F28249θ, NRRL 15773. 
     FIG. 32: Characteristic proton nuclear magnetic resonance spectrum of compound designated LL-F28249θ, NRRL 15773, in CDCl 3 . 
     FIG. 33: Characteristic electron impact mass spectrum of compound designated LL-F28249θ, NRRL 15773. 
     FIG. 34: Characteristic ultraviolet absorption spectrum of compound designated LL-F28249ι, NRRL 15773. 
     FIG. 35: Characteristic proton nuclear magnetic resonance spectrum of compound designated LL-F28249ι, NRRL 15773, in CDCl 3 . 
     FIG. 36: Characteristic electron impact mass spectrum of compound designated LL-F28249ι, NRRL 15773. 
     FIG. 37: Characteristic carbon-13 nuclear magnetic resonance spectrum of compound designated LL-F28249β, NRRL 15773, in CDCl 3  solution. 
     FIG. 38: Characteristic ultraviolet absorption spectrum of compound designated LL-F28249κ, NRRL 15773. 
     FIG. 39: Characteristic infrared absorption spectrum of compound designated LL-F28249κ, NRRL 15773. 
     FIG. 40: Characteristic electron impact mass spectrum of compound designated LL-F28249κ, NRRL 15773. 
     FIG. 41: Characteristic proton nuclear magnetic resonance spectrum of compound designated LLF28249κ NRRL 15773. 
     FIG. 42: Characteristic carbon-13 nuclear magnetic resonance spectrum of compound designated LL-F28249κ, NRRL 15773. 
     FIG. 43: Characteristic ultraviolet absorption spectrum of compound designated LL-F28249λ, NRRL 15773. 
     FIG. 44: Characteristic infrared absorption spectrum of compound designated LL-F28249λ, NRRL 15773. 
     FIG. 45: Characteristic electron impact mass spectrum of compound designated LL-F28249λ, NRRL 15773. 
     FIG. 46: Characteristic proton nuclear magnetic resonance spectrum of compound designated LLF28249λ, NRRL 15773. 
     FIG. 47: Characteristic carbon-13 nuclear magnetic resonance spectrum of compound designated LL-F28249λ, NRRL 15773. 
     FIG. 48: Characteristic ultraviolet absorption spectrum of compound designated LL-F28249μ, NRRL 15773. 
     FIG. 49: Characteristic infrared absorption spectrum of compound designated LL-F28249μ, NRRL 15773. 
     FIG. 50: Characteristic electron impact mass spectrum of compound designated LL-F28249μ, NRRL 15773. 
     FIG. 51: Characteristic proton nuclear magnetic resonance spectrum of compound designated LLF28249μ, NRRL 15773. 
     FIG. 52: Characteristic ultraviolet absorption spectrum of compound designated LL-F28249ν, NRRL 15773. 
     FIG. 53: Characteristic infrared absorption spectrum of compound designated LL-F28249ν, NRRL 15773. 
     FIG. 54: Characteristic electron impact mass spectrum of compound designated LL-F28249ν, NRRL 15773. 
     FIG. 55: Characteristic proton nuclear magnetic resonance spectrum of compound designated LLF28249ν, NRRL 15773. 
     FIG. 56: Characteristic carbon-13 nuclear magnetic resonance spectrum of compound designated LL-F28249ν, NRRL 15773. 
    
    
     DETAILED DESCRIPTION OF THE INVENTION 
     The physiochemical characteristics for the α, β, γ, δ, ε, ζ, η, θ, ι, κ, λ, μ, ν and ω components of LL-F28249 are described below: 
     LL-F28249α 
     1) Molecular weight: 612 (FAB-MS); 
     2) Molecular formula: C 36  H 52  O 8  ; 
     3) Specific optical rotation: [α] D   26  =+133°±3° (C 0.3, acetone); 
     4) Ultraviolet absorption spectrum: as shown in FIG. I UV MAX   CH .sbsp.3 OH  =244 nm (ε 28,000); 
     5) Infrared absorption spectrum: as shown in FIG. II (KBr disc): 3439, 2960, 2925, 1714, 1454, 1374, 1338, 1171, 1120, 996, 967 cm -1  ; 
     6) Proton nuclear magnetic resonance spectrum (CDCl 3 ): as shown in FIG. III; 
     7) Carbon-13 nuclear magnetic resonance spectrum (CDCl 3 ): as shown in FIG. IV and described in Table I; and 
     8) Electron impact mass spectrum: as shown in FIG. V with accurate mass measurements and proposed elemental compositions indicated in Table II. 
     LL-F28249β 
     1) Molecular weight: 584 (FAB-MS); 
     2) Molecular formula: C 34  H 48  O 8  ; 
     3) Specific optical rotation: [α] D   26  =+125° (C 0.3 acetone). 
     4) Ultraviolet absorption spectrum: as shown in FIG. VI UV MAX   CH .sbsp.3 OH  =244 nm (ε 25,600); 
     5) Infrared absorption spectrum: as shown in FIG. VII (KBr disc): 3520, 2910, 1735, 1717, 1450, 1375, 1335, 1180, 1170, 1119, 993, 727 cm -1  ; 
     6) Proton nuclear magnetic resonance spectrum (CDCl 3 ): as shown in FIG. VIII; 
     7) Carbon-13 nuclear magnetic resonance spectrum (CDCl 3 ): as shown in FIG. XXXVII and described in Table II A; and 
     8) Electron impact mass spectrum: as shown in FIG. IX with accurate mass measurements and proposed elemental compositions indicated in Table III. 
     LL-F28249γ 
     1) Molecular weight: 598 (FAB-MS); 
     2) Molecular formula: C 35  H 50  O 8  ; 
     3) Specific optical rotation: [α] D   26  =+150°±4° (C 0.3, acetone); 
     4) Ultraviolet absorption spectrum: as shown in FIG. X UV MAX   CH .sbsp.3 OH  =244 nm (ε 27,100); 
     5) Infrared absorption spectrum: as shown in FIG. XI (KBr disc): 3510, 2910, 1735, 1715, 1452, 1375, 1338, 1182, 1172, 1119, 995 cm -1  ; 
     6) Proton nuclear magnetic resonance spectrum (CDCl 3 ): as shown in FIG. XII; 
     7) Carbon-13 nuclear magnetic resonance spectrum (CDCl 3 ): as shown in FIG. XIII and described in Table IV; and 
     8) Electron impact mass spectrum: as shown in FIG. XIV with accurate mass measurements and proposed elemental compositions indicated in Table V. 
     LL-F28249ω 
     1) Molecular weight: 806 (FAB-MS); 
     2) Molecular formula: C 45  H 74  O 12  ; 
     3) Specific optical rotation: [α] D   26  =-49°±3° (C 0.35, methanol); 
     4) Ultraviolet absorption spectrum: as shown in FIG. XV UV MAX   CH .sbsp.3 OH  =225 nm (ε 27,400), 232 nm (ε 25,700); 
     5) Infrared absorption spectrum: as shown in FIG. XVI (KBr disc): 3480, 2965, 2935, 2880, 1703, 1647, 1458, 1380, 1292, 1223, 1135, 1098, 984 cm -1  ; 
     6) Proton nuclear magnetic resonance spectrum (CDCl 3 ): as shown in FIG. XVII; 
     7) Carbon-13 nuclear magnetic resonance spectrum (CDCl 3 ): as shown in FIG. XVIII and described in Table VI; and 
     8) Electron impact mass spectrum: as shown in FIG. XIX with accurate mass measurements and proposed elemental compositions indicated in Table VII. 
     LL-F28249δ 
     1) Molecular weight: 616 (EI-MS) 
     2) Molecular formula: C 35  H 52  O 9   
     3) HPLC retention volume of 14.0 ml in the system indicated in Table VIII; 
     4) Ultraviolet absorption spectrum (methanol): as shown in FIG. XX; 
     5) Proton nuclear magnetic resonance spectrum (CDCL 3 ): as shown in FIG. XXI; and 
     6) Electron impact mass spectrum: as shown in FIG. XXII. 
     LL-F28249ε 
     1) Molecular weight: 598 (EI-MS) 
     2) Molecular formula: C 35  H 50  O 8   
     3) HPLC retention volume of 14.8 ml in the system indicated in Table VIII; 
     4) Ultraviolet absorption spectrum (methanol): as shown in FIG. XXIII; 
     5) Proton nuclear magnetic resonance spectrum (CDCl 3 ): as shown in FIG. XXIV; and 
     6) Electron impact mass spectrum: as shown in FIG. XXV. 
     LL-F28249ζ 
     1) Molecular weight: 598 (EI-MS) 
     2) Molecular formula: C 35  H 50  O 8   
     3) HPLC retention volume of 16.0 ml in the system indicated in Table VIII; 
     4) Ultraviolet absorption spectrum (methanol): as shown as shown in FIG. XXVI; and 
     5) Electron impact mass spectrum: as shown in FIG. XXVI. 
     LL-F28249η 
     1) Molecular weight: 612 (EI-MS) 
     2) Molecular formula: C 36  H 52  O 8   
     3) HPLC retention volume of 23.5 ml in the system indicated in Table VIII; 
     4) Ultraviolet absorption spectrum (methanol): as shown in FIG. XXVIII; 
     5) Proton nuclear magnetic resonance spectrum (CDCl 3 ): as shown in FIG. XXIX; and 
     6) Electron impact mass spectrum: as shown in FIG. XXX. 
     LL-F28249θ 
     1) Molecular weight: 626 (EI-MS) 
     2) Molecular formula: C 37  H 54  O 8   
     3) HPLC retention volume of 24.5 ml in the system indicated in Table VIII; 
     4) Ultraviolet absorption spectrum (methanol): as shown in FIG. XXXI; 
     5) Proton nuclear magnetic resonanace spectrum (CDCl 3 ): as shown in FIG. XXXII; and 
     6) Electron impact mass spectrum: as shown in FIG. XXXIII. 
     LL-F28249ι 
     1) Molecular weight: 626 (EI-MS) 
     2) Molecular formula: C 37  H 54  O 8   
     3) HPLC retention volume of 26.0 ml in the system indicated in Table VIII; 
     4) Ultraviolet absorption spectrum (methanol): as shown in FIG. XXXIV; 
     5) Proton nuclear magnetic resonance spectrum (CDCl 3 ): as shown in FIG. XXXV; and 
     6) Electron impact mass spectrum: as shown in FIG. XXXVI. 
     LL-F28249κ 
     1) Molecular weight: 584 (EI-MS); 
     2) Molecular formula: C 35  H 52  O 7  ; 
     3) Specific optical rotation: [α] 26  D=+189°-(C 0.165 acetone); 
     4) Ultraviolet absorption spectrum: as shown in FIG. XXXVIII UV  MAX   CH .sbsp.3 OH  =241 nm (E20,400); 
     5) Infrared absorption spectrum: as shown in FIG. XXXIX (KBr disc); 
     6) Electron impact mass spectrum: as shown in FIG. XL; 
     7) Proton nuclear magnetic resonance spectrum (CDCl 3 ); as shown in FIG. XLI; and 
     8) Carbon-13 nuclear magnetic resonance spectrum (CDCl 3 ); as shown in FIG. XLII and described in Table IX. 
     LL-F28249λ 
     1) Molecular weight: 626 (FAB-MS); 
     2) Molecular formula: C 37  H 54  O 8  ; 
     3) Specific optical rotation: [α] D   26  =+145° (C, 0.23 acetone); 
     4) Ultraviolet absorption spectrum: as shown in FIG. XLIII UV  MAX   CH .sbsp.3 OH  =244 nm (E30,000); 
     5) Infrared absorption spectrum: as shown in FIG. XLIV (KBr disc); 
     6) Electron impact mass spectrum: as shown in FIG. XLV; 
     7) Proton nuclear magnetic resonance spectrum (CDCl 3 ); as shown in FIG. XLVI; and 
     8) Carbon-13 nuclear magnetic resonance spectrum (CDCl 3 ); as shown in FIG. XLVII and described in Table X. 
     LL-F28249μ 
     1) Molecular weight: 612 (EI-MS); 
     2) Molecular formula: C 37  H 56  O 7  ; 
     3) Ultraviolet absorption spectrum: as shown in FIG. XLVIII UV  MAX   CH .sbsp.3 OH  =241 nm (E16,800); 
     4) Infrared absorption spectrum: as shown in FIG. XLIX (KBr disc); 
     5) Electron impact mass spectrum: as shown in FIG. L; 
     6) Proton nuclear magnetic resonance spectrum (CDCl 3 ); as shown in FIG. LI. 
     LL-F28249ν 
     1) Molecular weight: 592 (EI-MS); 
     2) Molecular formula: C 36  H 48  O 7  ; 
     3) Specific optical rotation: [α] D   26  +136°-(C. 325, acetone); 
     4) Ultraviolet absorption spectrum: as shown in FIG. LII UV  MAX   CH .sbsp.3 OH  =256 (E20,500); 358 (E 8,830); 
     5) Infrared absorption spectrum: as shown in FIG. LIII (KBr disc); 
     6) Electron impact mass spectrum: as shown in FIG. LIV; 
     7) Proton nuclear magnetic resonance spectrum (CDCl 3 ); as shown in FIG. LV; and 
     8) Carbon-13 nuclear magnetic resonance spectrum (CDCl 3 ); as shown in FIG. LVI, and described in Table XI. 
     
                       TABLE I______________________________________Carbon-13 NMR Data for LL-F28249αCarbon  Chemical Shift.sup.1 (ppm)                    Proton Substitution______________________________________1       173.4            q.sup.22       142.8            CH3       139.4            q4       137.7            q5       137.3            q6       137.2            CH7       130.6            q8       123.3            CH9       120.3.sup.3      CH10      118.0            CH11      99.7             q12      80.2             q13      79.3             CH14      76.7             CH15      69.3             CH16      68.5             CH17      68.4             CH.sub.218      67.8             CH19      67.7             CH20      48.4             CH.sub.221      45.7             CH22      41.1             CH.sub.223      40.7             CH.sub.224      36.1             CH.sub.225      36.0             CH26      35.9             CH27      34.7             CH.sub.228      26.8             CH29      22.8.sup.4       CH.sub.330      22.2             CH.sub.331      19.9             CH.sub.332      15.5             CH.sub.333      13.9             CH.sub.334      11.0             CH.sub.3______________________________________ .sup.1 Downfield from TMS; CDCl.sub.3 solution. .sup.2 q = quarternary carbon. .sup.3,4 Two unresolved signals. 
    
     
                       TABLE II______________________________________High Resolution Mass Measurementsfor LL-F28249αm/z        Elemental Composition______________________________________612.3705   C.sub.36 H.sub.52 O.sub.8594.3543   C.sub.36 H.sub.50 O.sub.7576.3472   C.sub.36 H.sub.48 O.sub.6484.3211   C.sub.30 H.sub.44 O.sub.5482.2648   C.sub.29 H.sub.38 O.sub.6466.3097   C.sub.30 H.sub.42 O.sub.4448.2987   C.sub.30 H.sub.40 O.sub.3442.2375   C.sub.26 H.sub.34 O.sub.6425.2327   C.sub.26 H.sub.33 O.sub.5354.2181   C.sub.23 H.sub.30 O.sub.3314.1877   C.sub.20 H.sub.26 O.sub.3278.1144   C.sub.15 H.sub.18 O.sub.5265.1786   C.sub.16 H.sub.25 O.sub.3248.1405   C.sub.15 H.sub.20 O.sub.3247.1705   C.sub.16 H.sub.23 O.sub.2237.1838   C.sub.15 H.sub.25 O.sub.2219.1740   C.sub.15 H.sub.23 O.sub.151.0753   C.sub.9 H.sub.11 O.sub.2______________________________________ 
    
     
                       TABLE IIa______________________________________Carbon-13 NMR Data for LL-F28249βCarbon Chemical Shift(ppm)*                Carbon  Chemical Shift(ppm)______________________________________1     173.3          18      68.32     142.6          19      67.83     139.5          20      67.74     137.7          21      48.45     137.3          22      45.76     133.9          23      41.07     123.8          24      40.88     123.4          25      36.19     120.3          26       35.9**10    120.2          27      34.711    118.0          28      22.312     99.7          29      19.813     80.2          30      15.514     79.4          31      13.815     76.7          32      13.116     69.2          33      10.817     68.6______________________________________ *Downfield from TMS; CDCl.sub.3 solution **Two unresolved signals 
    
     
                       TABLE III______________________________________High Resolution Mass Measurementsfor LL-F28249βm/z        Elemental Composition______________________________________584.3388   C.sub.34 H.sub.48 O.sub.8566.3306   C.sub.34 H.sub.46 O.sub.7456.2864   C.sub.28 H.sub.40 O.sub.5442.2391   C.sub.26 H.sub.34 O.sub.6438.2780   C.sub.28 H.sub.38 O.sub.4425.2331   C.sub.26 H.sub.33 O.sub.5354.2187   C.sub.23 H.sub.30 O.sub.3314.1858   C.sub.20 H.sub.26 O.sub.3278.1168   C.sub.15 H.sub.18 O.sub.5237.1491   C.sub.14 H.sub.21 O.sub.3219.1380   C.sub.14 H.sub.19 O.sub.2209.1534   C.sub.13 H.sub.21 O.sub.2191.1418   C.sub.13 H.sub.19 O.sub.151.0750   C.sub.9 H.sub.11 O.sub.2______________________________________ 
    
     
                       TABLE IV______________________________________Carbon-13 NMR Data for LL-F28249γ   Chemical Shift.sup.1  Chemical ShiftCarbon  (ppm)         Carbon  (ppm)______________________________________ 1      173.6         19      68.3 2      142.4         20      67.9 3      139.9         21      57.7 4      137.3         22      48.5 5      136.0         23      45.8 6      134.0         24      41.2 7      123.8         25      40.8 8      123.6         26      36.2 9      120.4         27      36.110      119.6         28      36.011      118.5         29      34.812       99.8         30      22.313       80.5         31      19.914       77.8         32      15.515       77.0         33      13.816       76.8         34      13.117       69.3         35      10.818       68.6______________________________________ .sup.1 Downfield from TMS; CDCl.sub.3 solution. 
    
     
                       TABLE V______________________________________High Resolution Mass Measurementsfor LL-F28249γm/z        Elemental Composition______________________________________598.3543   C.sub.35 H.sub.50 O.sub.8580.3422   C.sub.35 H.sub.48 O.sub.7562.3292   C.sub.35 H.sub.46 O.sub.6496.2824   C.sub.30 H.sub.40 O.sub.6484.2440   C.sub.28 H.sub.36 O.sub.7478.2687   C.sub.30 H.sub.38 O.sub.5456.2576   C.sub.27 H.sub.36 O.sub.6438.2772   C.sub.28 H.sub.38 O.sub.4425.2341   C.sub.26 H.sub.33 O.sub.5420.2651   C.sub.28 H.sub.36 O.sub.3354.2199   C.sub.23 H.sub.30 O.sub.3314.1875   C.sub.20 H.sub.26 O.sub.3292.1307   C.sub.16 H.sub.20 O.sub.5288.2075   C.sub.19 H.sub.28 O.sub.2248.1397   C.sub.15 H.sub.20 O.sub.3237.1490   C.sub.14 H.sub.21 O.sub.3219.1382   C.sub.14 H.sub.19 O.sub.2209.1544   C.sub.13 H.sub.21 O.sub.2191.1435   C.sub.13 H.sub.19 O.sub.151.0759   C.sub.9 H.sub.11 O.sub.2______________________________________ 
    
     
                       TABLE VI______________________________________Carbon-13 NMR Data for LL-F28249ω   Chemical Shift.sup.1  Chemical ShiftCarbon  (ppm)         Carbon  (ppm)______________________________________ 1      220.7         23      .sup. 42.2.sup.2 2      219.6         24      40.4 3      165.2         25      38.3 4      148.7         26      37.6 5      133.1         27      36.1 6      132.3         28      34.8 7      132.1         29      33.5 8      130.2         30      30.1 9      122.3         31      26.610      100.0         32      25.411      82.9          33      24.512      75.9          34      23.013      73.0          35      21.114      72.7          36      17.915      72.6          37      14.316      72.1          38      14.217      69.0          39      12.118      67.3          40      11.519      63.6          41      10.920      51.4          42       8.721      46.2          43       8.322      45.7          44       5.7______________________________________ .sup.1 Downfield from TMS; CDCl.sub.3 solution. .sup.2 Two unresolved signals. 
    
     
                       TABLE VII______________________________________High Resolution Mass Measurementsfor LL-F28249ωm/z        Elemental Composition______________________________________462.3350   C.sub.28 H.sub.46 O.sub.5444.3237   C.sub.28 H.sub.44 O.sub.4425.2534   C.sub.23 H.sub.37 O.sub.7407.2439   C.sub.23 H.sub.35 O.sub.6406.3046   C.sub.25 H.sub.42 O.sub.4387.2895   C.sub.25 H.sub.39 O.sub.3337.2010   C.sub.19 H.sub.29 O.sub.5297.2031   C.sub.17 H.sub.29 O.sub.4279.1944   C.sub.17 H.sub.27 O.sub.3261.1851   C.sub.17 H.sub.25 O.sub.2253.1797   C.sub.15 H.sub.25 O.sub.3235.1697   C.sub.15 H.sub.23 O.sub.2224.1754   C.sub.14 H.sub.24 O.sub.2209.1530   C.sub.13 H.sub.21 O.sub.2207.1744   C.sub.14 H.sub.23 O.sub.184.1458   C.sub.11 H.sub.20 O.sub.2179.1048   C.sub.11 H.sub.15 O.sub.2173.1205   C.sub.9 H.sub.17 O.sub.3167.1051   C.sub.10 H.sub.15 O.sub.2155.1069   C.sub.9 H.sub.15 O.sub.2______________________________________ 
    
     
                       TABLE VIII______________________________________HPLC Retention Volumes forLL-F28249α, δ, ε, ζ, η, θ and ιCompound     Retention Volume*(ml)______________________________________LL-F28249 α        19.8LL-F28249 δ        14.0LL-F28249 ε        14.8LL-F28249 ζ        16.0LL-F28249 η        23.5LL-F28249 θ        24.5LL-F28249 ι        26.0______________________________________ *System includes a column 3.9 mm × 30 cm packed with C.sub.18 reverse phase packing developed with methanol:water (80:20) at 1.0 ml/minute, detection was by absorbance at 254 nm. 
    
     
                       TABLE IX______________________________________Carbon-13 NMR Data for LL-F28249κCarbon Chemical Shift(ppm)*                Carbon  Chemical Shift(ppm)______________________________________ 1    173.9          19      56.7 2    140.7          20      48.4 3    138.3          21      47.7 4    136.6          22      41.1 5    136.5          23      40.6 6    133.8          14      37.1 7    124.7          25      36.3 8    124.4          26      36.0 9    123.8          27      35.910    120.1          28      34.611    118.5          29      22.012     99.7          30      19.313     77.2          31      16.014      76.6**       32      13.815     76.5          33      13.316     69.3          34      13.117     68.6          35      10.718     67.3______________________________________ *Downfield from TMS; CDCl.sub.3 solution. **Coincident with CDCl.sub.3 signals. 
    
     
                       TABLE X______________________________________Carbon-13 NMR Data for LL-F28249λCarbon Chemical Shift(ppm)*                Carbon  Chemical Shift(ppm)______________________________________ 1    173.6          19      68.3 2    142.5          20      67.9 3    139.8          21      57.8 4    137.4          22      48.6 5    137.2          23      45.8 6    136.0          24      41.2 7    130.7          25      40.9 8    123.6          26       36.1** 9    120.3          27      36.010    119.7          28      34.911    118.6          29      26.912     99.8          30       23.0**13     80.5          31      22.414     77.7          32      20.015     77.6          33      15.716     76.7          34      14.017     69.3          35      11.118     68.6______________________________________ *Downfield from TMS; CDCl.sub.3 solution. **Two unresolved signals. 
    
     
                       TABLE XI______________________________________Carbon-13 NMR Data for LL-F28249νCarbon Chemical Shift(ppm)*                Carbon  Chemical Shift(ppm)______________________________________1     167.4          18      69.42     150.5          19      68.73     142.9          20      68.34     142.0          21      48.45      137.2**       22       41.0**6     132.1          23      35.97     130.7          24      35.68     125.8          25      35.59     125.5          26      34.410    124.2          27      29.711    123.7          28      26.812    123.2          29      22.913    121.3          30      22.814    118.0          31      22.115    100.0          32      15.316     76.7          33      13.917     74.6          34      11.0______________________________________ *Downfield from TMS; CDCl.sub.3 solution. **Two unresolved signals. 
    
     
                       TABLE XII______________________________________Chromatographic Data      TLC*      HPLC**Component  Relative Rf                Retention Time(minutes)______________________________________α    1.00      13.8β      .797      9.3γ    1.42      12.6δ     .758     10.4ε  1.06      10.9ζ     1.12      11.5η      1.03      16.2θ    1.27      17.3ι     1.27      18.2κ    1.83      24.7λ   1.56      19.1μ       1.92      38.0ν       1.95      42.3ω     .212      7.1______________________________________ *Analtech Silica Gel GHLF250μ developed with ethyl acetate:methylene chloride (1:3), detection by charring with H.sub.2 SO.sub.4. **Altex Ultrasphere ODS 5μ 4.6 mm × 25 cm developed with 85% methanol in water at 1.0 ml/minute, detection by absorbance at 254 nm. 
    
     The new agents designated LL-F28249α, β, γ, δ, ε, ζ, η, θ, ι, κ, λ, μ, ν and ω are formed during the cultivation under controlled conditions of Streptomyces cyaneogriseus noncyanogenus, NRRL 15773. 
     This organism is maintained in the culture collection of the Medical Research Division, American Cyanamid Company, Pearl River, N.Y. as culture number LL-F28249. A viable culture of this new microorganism has been deposited with the Patent Culture Collection Laboratory, Northern Regional Research Center, U.S. Department of Agriculture, Peoria, Ill. 61604, and has been added to its permanent collection. It is freely available to the public in this depository under its accession number NRRL 15773. 
     For the production of these new agents the present invention is not limited to this particular organism. In fact, it is desired and intended to include the use of naturally-occurring mutants of this organism, as well as induced mutants produced from this organism by various mutagenic means known to those skilled in the art, such as exposure to nitrogen mustard, X-ray radiation, ultraviolet radiation, N&#39;-methyl-N&#39;nitro-N-nitrosoguanidine, actinophages and the like. It is also desired and intended to include inter- and intraspecific genetic recombinants produced by genetic techniques known to those skilled in the art such as for example, conjugation, transduction and genetic engineering techniques. 
     Cultivation of Streptomyces cyaneogriseus noncyaneogenus, NRRL 15773 may be carried out in a wide variety of liquid culture media. Media which are useful for the production of agents LL-F28249α, β, γ, δ, ε, ζ, η, θ, ι, κ, λ, μ, ν and ω include an assimilable source of carbon, such as dextrin, sucrose, molasses, glycerol, etc.; an assimilable source of nitrogen such as protein, protein hydrolysate, polypeptides, amino acids, corn steep liquor, etc.; and inorganic anions and cations, such as potassium, sodium, ammonium, calcium, sulfate, carbonate, phosphate, chloride, etc. Trace elements such as boron, molybdenum, copper, etc., are supplied as impurities of other constituents of the media. Aeration in tanks and bottles is supplied by forcing sterile air through or onto the surface of the fermenting medium. Further agitation in tanks is provided by a mechanical impeller. An antifoam agent such as silicone oil may be added as needed. 
     EXAMPLE 1 
     Inoculum Preparation 
     A typical medium used to grow the various stages of inoculum was prepared according to the following formula: 
     
         ______________________________________Dextrose         1.0% -Dextrin 2.0%Yeast extract    0.5%NZ amine         0.5%Calcium carbonate            0.1%Water qs         100%______________________________________ 
    
     This medium was sterilized. A 100 ml portion of this sterile medium, in a flask, was inoculated with mycelial scrapings from an agar slant of Streptomyces cyaneogriseus noncyanogenus NRRL 15773. The medium was then agitated vigorously on a rotary shaker for 48-72 hours at 28° C. providing primary inoculum. This primary inoculum was then used to inoculate one liter of the above sterile medium, which was then grown aerobically at 28° C. for 48 hours providing secondary inoculum. 
     EXAMPLE 2 
     Fermentation 
     A fermentation medium of the following formulation was prepared. 
     
         ______________________________________Dextrin          1.0%Soya peptone     1.0%Molasses         2.0%Calcium carbonate            0.1%Water qs         100%______________________________________ 
    
     This medium was sterilized and then a 30 liter portion was inoculated with one liter of secondary inoculum prepared as described in Example 1. The fermentation was conducted at 30° C., with a sterile air flow of 30 liters per minute, backpressure of 8 psig and agitation by an impeller operated at 500 rpm for 91 hours at which time the mash was harvested. 
     EXAMPLE 3 
     Isolation of LL-F28249α, β and γ 
     A total of 26 liters of whole harvest mash, prepared as described in Example 2 was mixed with 1500 g of diatomaceous earth and filtered. The mycelial cake was washed with 5 liters of water and the filtrate and wash discarded. The mycelial cake was mixed with 10 liters of methanol for one hour, then filtered and washed with 5 liters of methanol. The methanol extract and methanol wash were combined and evaporated to an aqueous residue of about 1-2 liters. This aqueous residue was mixed with twice its volume of methylene chloride and mixed for 1/2 hour. The methylene chloride phase was separated and then concentrated to a syrup giving 27 g of crude material. 
     This 27 g of crude material was dissolved in a mixture of methylene chloride and methanol, filtered through cotton and anhydrous sodium sulfate and then evaporated, giving 7.0 g of an oil. 
     A 170 g portion of silica gel was slurried in 12.5% ethyl acetate in methylene chloride and poured to form a column 2.5×58 cm. The oil was dissolved in 12.5% ethyl acetate in methylene chloride and applied to the column. The column was developed with the same solvent mixture. The mobile phase was run at 1.3 ml/minute initially and 15 minutes fractions were collected. The flow rate slowed to about 0.5 ml/minute after 10 fractions, so fractions 1-10 were 20 ml decreasing to about 10 ml uniformly and fractions 11-98 were about 7 ml. At fraction 99 the flow rate was increased to give 25 ml fractions in 10 minutes. A total of 105 fractions were collected. These fractions were tested by thin layer chromatography in ethyl acetate:methylene chloride (1:1). 
     Fractions 30-54 were combined and evaporated giving 1.08 g of an oil containing LL-F28249γ. 
     Fractions 55-62 were combined and evaporated giving 150 mg of solid containing LL-F28249α and β. 
     The 150 mg of solid containing LL-F28249α and β was chromatographed by preparative HPLC using a reversephase column (Whatman C8, 2.2×50 cm) developed with 80% (v/v) methanol in water. The flow rate was about 10 ml/minute and 2 minute fractions were collected. 
     Fractions 58-69 were combined, the methanol was evaporated, t-butanol was added and the mixture was lyophilized, giving 60 mg of pure LL-F28249α. 
     Fractions 40-43 were combined, the methanol was evaporated and the residual aqueous suspension was extracted with methylene chloride which, upon evaporation, gave 10 mg of pure LL-F28249β. 
     The 1.08 g of oil containing LL-F28249γ was dissolved in 10% ethyl acetate in methylene chloride and applied to a column (2.5×50 cm) packed with silica gel. The column was developed with 10% ethyl acetate in methylene chloride, eluting at a flow rate of 2 ml/minute and collecting 12 minute fractions. Fractions 19-29 were combined and evaporated to a residue. This residue was purified by preparative reverse-phase chromatography as described for the α and β components. Fractions 55-62 were combined, the methanol was evaporated in vacuo, t-butanol was added and the mixture was lyophilized giving 60 mg of pure LL-F28249γ. 
     EXAMPLE 4 
     Large Scale Fermentation 
     An inoculum of Streptomyces cyaneorgriseus non-cyanogenus, NRRL 15773 was prepared as described in Example 1, using 100 ml of primary inoculum to produce 10 liters of secondary inoculum. 
     Two 300 liter fermentations were conducted as described in Example 2 using 10 liters of the above secondary inoculum for each 300 liters of fermentation medium. At the end of 118 hours the mashes were harvested. 
     EXAMPLE 5 
     Isolation of LL-F28249ω 
     A total of 450 liters of harvest mash from the two 300 liter fermentations described in Example 4 was treated as described in the first portion of Example 3 giving crude material as a syrup. 
     This syrupy residue was washed with hexane to remove non-polar materials and the remaining 9 g of insoluble material was subjected to Sephadex LH-20 partition chromatography. 
     The chromatographic column was prepared with 9 liters of Sephadex LH-20, previously swelled in methanol, to form a column 10×110 cm. The column was equilibrated by passing about 4800 ml of mobile phase [methylene chloride:hexane:methanol (10:10:1)] through it at a flow rate of 5 ml/minute. The 9 g of insoluble material was charged onto the column in 50 ml of the mobile phase. An initial forerun of 2150 ml was obtained at a flow rate of 5 ml/minute. The flow rate was then increased to 8 ml/minute and fractions were collected every 45 minutes. Fractions 9-12 were combined and the solvents evaporated in vacuo giving 4.9 g of residue. 
     This residue was dissolved in a 1:1 mixture of cyclohexane and ethyl acetate and allowed to evaporate slowly at room temperature. The addition of n-hexane gave a precipitate which was collected, giving 3.1 g of solid. 
     A 3.0 g portion of this solid was further purified by precipitation from 25 ml of methylene chloride using 50 ml of n-hexane. 
     The precipitate thus obtained was redissolved in 15 ml of methylene chloride and precipitated with 25 ml of n-hexane, giving 510 mg of pure LL-F28249ω. 
     EXAMPLE 6 
     Isolation of LL-F28249δ, ε, ζ, η, θ and ι 
     Fractions 4-7 from the Sephadex LH-20 column described in Example 5 were combined and the solvents evaporated in vacuo to give 1.9 g of residue. 
     This residue was chromatographed on a 200 g silica gel column (2.5 cm×83 cm) using 10% ethyl acetate in methylene chloride as the eluant. The flow rate was approximately 2 ml/minute and fractions were collected every 12 minutes. 
     Fractions 65-67 and 73-79 were combined together and the solvents were evaporated in vacuo to yield 250 mg of residue. 
     This 250 mg of residue was subjected to preparative reverse-phase chromatography as described in Example 3 except using 75% methanol in water as the mobile phase. The flow rate was about 10 ml/minute. The first 2000 ml portion of eluate was diverted to waste then 72 fractions were collected at 2.0 minute intervals. After diverting another portion of eluate to waste (between 300-400 ml) fractions were collected again but at 2.5 minute intervals. 
     Fractions were combined as indicated below. The combined fractions were allowed to evaporate in a fume hood overnight, then the components were extracted into methylene chloride. Following evaporation of the solvent about 1 mg each of the pure components were obtained. 
     
         ______________________________________Fractions Combined           Compound______________________________________ 7-10           LL-F28249 δ19-22           LL-F28249 ε28-31           LL-F28249 ζ81-83           LL-F28249 η86-88           LL-F28249 θ93-95           LL-F28249 ι______________________________________ 
    
     EXAMPLE 7 
     Isolation of LL-F28249κ, λ, μ and ν 
     A total of 390 liters of fermentation mash, harvester from fermentations conducted as described in Example 2, was processed essentially as described in the first paragraph of Example 3, giving 120 ml of methylene chloride concentrate. This concentrate was diluted with 200 ml of hexane and chilled overnight at 4° C. The resulting precipitate was removed by filtration and discarded. The filtrate was diluted with 300 ml of hexane. The resulting precipitate (A) was collected by filtration and saved. This filtrate was evaporated to dryness and the oily residue was then dissolved in 200 ml of methylene chloride and diluted with 1700 ml of hexane. The resulting precipitate (B) was collected by filtration and saved. This filtrate was concentrated to an oily residue which was then redissolved in 50 ml of methylene chloride, 950 ml of methanol was added and this solution was stored at 4° C. for 3 days. The resulting precipitate was removed by filtration and discarded. The filtrate was evaporated to dryness and the residue (C) combined with (A) and (B) and subjected to chromatography as follows: The 5.0×109 cm column was slurry-packed with Woelm TSC silica gel in ethyl acetate:methylene chloride (1:9). The column was developed with the same solvent mixture at a rate of 25 ml/minute. The first 2 liters of effluent were discarded, then sixteen 400 ml fractions were collected. 
     Fractions 2 and 3 were combined and evaporated giving 3.9 g of oily material (D). 
     Fractions 4 through 7 were combined and evaporated giving 9.5 g of oily material which was dissolved in hexane and chromatographed on a 2.5×110 cm column slurry-packed with 300 g of Woelm silica gel in ethyl acetate:hexane (1:4). The column was developed with the same solvent system at a rate of 4 ml/minute, collecting fractions at 7 minute intervals. 
     Fractions 45-54 were combined and evaporated, giving 0.3 g of material (E). 
     Fractions 63-135 were combined, evaporated to dryness, then redissolved in t-butanol and lyophilized giving 4.6 g of off-white solid (F). 
     LL-F28249κ and μ 
     Material (D) and (E) were combined and chromatographed on a 2.5×110 cm column packed with 300 g of Woelm silica gel, developing with ethyl acetate:hexane (1:9). The flow rate was maintained at 4 ml/minute and fractions were collected at 7 minute intervals. 
     Fractions 67-115 were combined and evaporated to dryness, giving 920 mg of residue (G). 
     This residue (G) was chromatographed by preparative HPLC using a reverse phase column (Whatman C8, 2.2×50 cm) and developing with 85% (v/v) methanol in water. The flow rate was about 10 ml/minute and fractions were collected at 2.5 minute intervals. 
     Fractions 33-40 were combined, concentrated to remove the methanol, then extracted with methylene chloride. The residue obtained upon evaporation was dissolved in t-butanol and then lyophilized, giving 60 mg of LLF-28249κ. 
     Fractions 52-58 were similarly processed giving a small quantity of LL-F28249μ. 
     LL-F28249λ 
     A one gram portion of material (F) was chromatographed by reverse phase HPLC, as described above, except that 80% (v/v) methanol in water was used as eluent. 
     Fractions 61-75 were combined and processed as above, giving 100 mg of LL-F28249λ. 
     LL-F28249ν 
     A 396 g portion of material essentially the same as material (D) above, was dissolved in 500 ml of methanol and then chiled at 40° for several hours. The resulting precipitate was removed by filtration, washed with cold methanol and discarded. The combined filtrate and wash was evaporated. The residual oil was dissolved in hexane and charged on a 5×50 cm dry-packed silica gel column (Mallinkrodt SilicAR cc-7). The column was eluted with ethyl acetate:hexane (1.5:8.5) at a rate of about 50 ml/minute. 
     
         ______________________________________Four fractions were collected.Fraction     Volume(liters)______________________________________1            12            43            14            2______________________________________ 
    
     Fraction 3 was evaporated, giving 5.0 g of residue which was purified by preparative reverse phase HPLC (Waters C 18 , 5×60 cm). The column was initially developed with 16 liters of 80% methanol in water (v/v) at 100 ml/minute, then with 6.4 liters of 84% methanol in water (v/v). The first liter of effluent was discarded and then fractions of 400 ml were collected. 
     Fractions 44-47 were combined and processed as described above, giving 390 mg of LLF28249ν as a pale yellow solid.