baber/WOPTO huggingface dataset:
Patent HU-214397-B (HU)
Inventor: OETIKER HANS
IPC: B65B27/04
Filed: 1991-01-29
Abstract: A találmány tárgya gép és eljárás bilincsszalagból állószőrítóbilincsek rögzítendő tárgy (90) köré szerelésére ésmeghúzására. A szőrítóbilincsnek (100) a belső szalagrészt (102)alkőtó sza aszán legalább egy kifelé nyúló hőrga (104) van, a belsőszakaszt átlapőló külső szalagrészen (103) legalább egy, hőrőggal(104) összekapcsőlódó nyílása (103'), és egy megszőrításra alkalmas fezítőszerkezete (105) van. A gépnek a találmány szerint aszőrítóbilincset (100) megtartó tartószerkezete; a bilincsszalag belsőszalagrészét (102) a rögzítendő tárgy (90) köré szőrító első pőfarésze(30); a bilincsszalag küls szalagrészét (103) a tárgy (90) körészőrító és a hőrgőt (104) a nyílással (103') összekapcsőló másődikpőfarésze (40); legalább egy, a feszítőszerkezettel (105) kapcsőlódó,a szőrítóbilincset (100) a rögzítendő tárgy (90) körül megfeszítőtővábbi pőfarésze (50) van. A tartószerkezet, az első pőfarész, amásődik pőfarész valamint a tővábbi pőfarész (50) működtetésére pedigműnkahengerei 80, 39, 49, 59) vannak. A szőrítóbilincs aűtőmatikűsszerelési és meghúzási eljárásánál a találmány értelmében aszőrítóbilincset (100) befőgatják; a belső szalagrészt (102) alkőtószakaszt a rögzítendő tárgy (90) köré hajl tják; a külső szalagrészt(103) alkőtó szakaszt úgy hajlítják a rögzítendő tárgy (90) köré, hőgya belső szalagrész (102) legalább egy hőrgát (104) a külső szalagrész(103) megfelelő nyílásával (1 3) összekapcsőlva mechanikűs kötésthőznak létre. A tárgy (90) által megtartőtt szőrítóbilincs (100)tartószerkezetét (70) kiőldják; végül a szőrítóbilincs (100) külsőszalagrészén (100) elhely zett feszítőszerkezettel (105) aszőrítóbilincset (100) a rögzítendő tárgy (90) körül meghúzzák. ŕ
Patent HU-204849-B (HU)
Title: Process for producing gnrh-antagonist decapeptide derivatives
Inventor: ANDERSON HARRY ALEC
IPC: C07K14/575
Filed: 1986-02-21
Abstract: GnRH peptide analogs which regulate the secretion of gonadotropins by the pituitary gland and either promote or inhibit the release of steroids by the gonads. Administration of an effective amount of a GnRH antagonist prevents ovulation of female mammalian eggs and/or the release of gonadotropins. Administration of GnRH agonists can be used to regulate fertility in male and female mammals.These and other peptide hormones exhibit improved binding efficiency and biological potency as a result having a residue in a critical, generally central location in the chain which residue contains a mixed alkyl ketone side-chain terminating in an aromatic group. Methods for efficiently synthesizing these peptides from readily available compounds are disclosed.
Patent YU-47119-B (YU)
Inventor: CANNATA V
IPC: C07D303/48
Filed: 1988-04-07
Abstract: NOV POSTUPAK ZA PRIPREMANJE ALFA-(1-METILETIL)-3,4-DIMETOKSIBENZEN-ACETONITRILA, formule: naznačen time, što reaguje izobutiril-3,4-dimetoksibenzen, formule: sa alfa-halogenestrom, formule X-CH2-COOR VII u kojoj X predstavlja atom halogena, a R predstavlja alkil radikal koji je nerazgranat ili je razgranat, a sadrži od 1 do 6 atoma ugljenika, u prisustvu alkalnog sredstva, izabranog izmedju alkoksida alkalnog metala, formule R1O-Me+ VIII u kojoj Me+ predstavlja katjon alkalnog metala, a R1 je alkil radikal, koji je nerazgranat ili razgranat, a sadrži od 1 do 6 atoma ugljenika, natrijum-amida ili natrijum-hidrida, a u datom slučaju u prisustvu rastvarača, izabranog izmedju aromatskog ugljovodonika i alkohola, koji je nerazgranat ili razgranat, a sadrži od 1 do 6 atoma ugljenika, ili njihovih smeša, u trajanju od oko 1 do oko 24 sata, na temperaturi izmedju -25°C i temperature ključanja reakcione smeše, što se nastali estar glicidne kiseline, formule u kojoj R ima gore navedeno značenje, alkalno hidrolizuje, na temperaturi izmedju oko 0°C i temperature ključanja reakcione smeše, u trajanju izmedju oko 1 do oko 12 sati, da bi se dobila alkalna so epoksi kiseline, formule u kojoj Me+ ima gore navedeno značenje, što se jedinjenje formule IV dekarboksiluje, pri temperaturi izmedju oko 20°C i temperature ključanja smeše, u trajanju oko 1 do oko 16 sati, da bi se dobio alfa-(1-metiletil)-3,4-dimetoksibenzenacetaldehid, formule što se pomenuti aldehid, formule V, tretira sa hidroksilamin hidrohloridom, na temperaturi izmedju oko 0°C i temperature ključanja reakcione smeše, u trajanju od oko 0,5 do oko 16 sati, kako bi se dobio alfa-(1-metiletil)-3,4-dimetoksibenzenacetaldoksim, formule i što se pomenuti oksim formule VI, dehidratiše kako bi se dobio željeni nitril, formule I. Prijava sadrži još 7 zavisnih zahteva.
Patent RS-50347-B (RS)
Inventor: GLUHAJIC VASO
IPC: A47L9/18
Filed: 2003-01-16
Abstract: Gravitaciono-ejektorski mokri filter koji se sastoji iz posude (1) naznačen time što obuhvata, dovodnu cev (2) čiji je jedan kraj hermetično provučen kroz poklopac (17); a drugi kraj je smešten u posudi (1), što je na drugom kraju dovodne cevi (2) izvedena mlaznica (3) čiji je otvor (3.1) izveden ispod otvora (6.1) tunela (6), što je tunel (6) čvrsto spojen sa bočnim tunelima (5) na kojima su izvedeni otvori (4), okrenuti prema dnu posude, što je tunel (6) čvrsto spojen sa mešačem (7) iznad koga je izveden levak (8) koji je čvrsto spojen sa cevi (9), koja je uvučena u deflektor (10) koji je čvrsto vezan za poklopac (17) za koji je čvrsto vezan i deflektor (12), što su deflektori (10,12) smešteni sa jedne strane poklopca (17) u posudi (1) koja je hermetički zatvorena poklopcem (17), a sa druge strane poklopca (17) je čvrsto i hemetički vezana cev (16), što je deflektor (11) unutar posude (1) čvrsto spojen sa bočnim zidovima posude (1), što je dužina tunela (5,6) po uzdužnoj osi od 0.2D do 3D, što je mešač (7) izveden od dve cevi koje su međusobno spojene sa cevnim lukom čiji je ugao ≤ 90°, što je dužina mešača (7) od 2D do 10D i što je prečnik cevi (9) izveden u rasponu od 1.5D do 3D.
Patent AT-407178-B (AT)
IPC: E05D5/02
Filed: 1993-06-25
Granted: 2001-01-25
Abstract: A dowel device for the fastening of furniture fittings, such as hinge base plates or the like, with an anchoring part fixable in a bore 6 in a furniture part 1 and with a coupling part which projects into the anchoring part and which connects the anchoring part to the part 3 to be fastened, such as the hinge base plate. The anchoring part is formed by a dowel 29, and the coupling part is formed by a hook 31 which projects into the dowel 29 and which engages on an inner edge projection 30 of the dowel 29. The hook 31 is tiltable about an axis 24 on the part 3 to be fastened. <IMAGE>
Patent AT-395800-B (AT)
Title: Ski boot
Inventor: HILGARTH KURT DIPL ING
IPC: A43B5/04
Filed: 1987-06-24
Granted: 1993-03-25
Abstract: Ski boot with a shell 1 and a shaft 2 which is formed in its front part by a cuff 3 and in its rear part by a cover 4 which is pivotable about the shell 1 in the direction of travel. A pressure distribution plate 6 is arranged between the cuff 3 and an inner boot inserted into the boot, the cuff 3 bearing at least one cable pull 7, the cable of which extends between the cuff 3 and the pressure distribution plate 6. The cable of the cable pull 7 is fastened by both its ends 8, 9 to the cuff 3 and forms, on both sides of the cuff, a loop 10, 11 which can be attached or fastened on the outside of the cover. Moreover, the cable, after forming one loop, continues, between the cuff 3 and the pressure distribution plate 6, to the opposite loop 10 or 11 respectively. <IMAGE>
Patent AT-392254-B (AT)
Inventor: JONKE HANS DIPL ING DR TECHN
IPC: B66C19/00
Filed: 1988-10-03
Granted: 1991-02-25
Abstract: A crane construction for part-load transport consists of several vertical conveying sections (1) and horizontal conveying sections (2) lying in between. Passing places (3) for the transport aids (T) are arranged along the entire conveying path of single-lane construction, and set up at the intersecting areas of vertical (1) and horizontal conveying sections (2) are transfer points (4) where the load-lifting members (L) are changed. The vertical conveying sections (1) are enclosed by (telescopic) conveying shafts (6) and have loading stations (10) arranged at their (bottom) ends, several load-lifting members (L2, L2') being located along the horizontal conveying section (2), and portal, semi-portal, bridge and level-luffing cranes in particular, with a rigid crane jib (7) or a crane jib (7) which can be displaced in the horizontal direction or swung out, being provided as the supporting structure. <IMAGE>
Patent AT-381968-B (AT)
Title: Preparation method for long-fibred materials for paper making
IPC: D21B1/00
Filed: 1982-10-13
Granted: 1986-12-29
Abstract: Method of preparing long-fibred materials with a fibre length greater than 15 mm, comprising pre-milling of the fibrous material in a dry cutting mill 2 to an average cut length of the fibres of no more than 10 mm. The semi-finished product is then suspended in a chest 4 and cut to a desired fibre length in a refiner 7 of any desired design, before the finished product is supplied to a papermaking machine. <IMAGE>
Patent FI-63854-B (FI)
Inventor: SCHMUECKING CARL-GUENTHER
IPC: A61F13/02
Filed: 1980-03-07
Granted: 1983-05-31
Abstract: 1. A plaster for epicutaneous tests which has at least one test center (3) and is fixed onto a projecting plaster film (1) forming a rim (5), characterized in that thanks to the desired separation line (6), the rim (5) of the plaster film (1) is detachably fixed to that part (2) of the plaster film (1) which contains the test center (3).
Patent FI-77654-B (FI)
Inventor: LE MARTRET ODILE
IPC: C07D215/54
Filed: 1982-07-14
Granted: 1988-12-30
Abstract: Novel 3-quinoline-carboxamides of the formula    <IMAGE>  I  wherein R is in 6 or 7-position and is selected from the group consisting of hydrogen, halogen, alkyl of 1 to 6 carbon atoms, cycloalkyl of 3 to 6 carbon atoms, alkoxy of 1 to 6 carbon atoms, -CF3, -SCF3 and CH3S-, R1 is selected from the group consisting of hydrogen, alkyl of 1 to 6 carbon atoms, phenyl and benzyl, R2 is -NHR4, R4 is selected from the group consisting of alkyl of 2 to 6 carbon atoms, substituted aryl of 6 to 10 carbon atoms and substituted heterocycle of an aromatic character of 3 to 5 carbon atoms with the proviso that when R4 is a mono substituted aryl or heterocycle, the substituent is different from R of the quinoline when it is a halogen and R3 is selected from the group consisting of hydrogen and -OH and their non-toxic, pharmaceutically acceptable acid addition salts having remarkable anxiolytic properties capable of lessening emotional reactions and diminishing states of psychic tension and their preparation.
Patent FI-67589-B (FI)
Inventor: SIMOLA MARKKU
IPC: D21D5/02
Filed: 1983-10-25
Granted: 1984-12-31
Abstract: A screen for fibre pulp is provided with means for removal of light reject. The screening apparatus comprises a vertical cylindrical screen (2); and a rotor (3) which is concentrically disposed inside the screen and the substantially closed outer surface (9) of which together with the inner surface (10) of the screen defines a screening zone (11) for the pulp. A pipe (19) is provided inside the rotor (3) the upper end of the pipe being disposed adjacent to the inner surface (21) of the closed upper end (12) of the rotor (3).
Patent FI-96096-B (FI)
Inventor: DE JONG JAN IDE
IPC: B01J37/20
Filed: 1989-07-28
Granted: 1996-01-31
Abstract: Ex-situ presulphidation of hydrotreating catalysts comprising impregnating the catalysts with an aqueous solution of an organic sulphur compound, e.g. the diammonium salt of 2,5-dimercapto-1,3,4-thiadiazole and 2,2 min -dithiodiethanol, followed by drying of the impregnated material. The dried material is activated by contacting it with hydrogen gas at elevated temperature.
Patent FI-98920-B (FI)
Inventor: BES RICHARD FRANCOIS THEODOR
IPC: C08J3/215
Filed: 1989-12-19
Granted: 1997-05-30
Abstract: The invention relates to a method for the production of a pulverulent composition containing dyestuff and/or pigment composition particles, wherein in a plastic dispersed dyestuff and/or pigment composition particles are formed by mixing an aqueous paste containing dyestuff and/or pigment particles in a plastic emulsion, removing water and pulverizing the mass obtained. The dyestuff or pigment is preferably chosen from the spinel pigments, carbon black and organic pigments, and transparent iron oxide; the plastic is preferably chosen from polystyrene, polyethene, polyvinyl chloride and polyvinyl acetate. The particles as obtained can be mixed with a molten wax composition, such that the dyestuff and/or pigment composition particles de-agglomerate, whereafter the mixture is dispersed and left to solidify. The de-agglomerated particles are more particularly smaller than 5  mu  .
Patent FI-85261-B (FI)
Inventor: KNUUTTILA PEKKA
IPC: C01G49/10
Filed: 1990-12-21
Granted: 1991-12-13
Abstract: A method for preparing anhydrous ferric chloride from a hydrous solution containing ferric chloride that possibly contains organic substances and or ferrous chloride, comprises the steps of:   a) removing water from a ferric-chloride water solution, or a solution in which at least a portion of the ferrous chloride has possibly been converted by oxidation into ferric chloride, by drying in an atmosphere containing hydrochloric acid; and b) refining the anhydrous ferric chloride by sublimating it into the gas phase in a chlorine-containing atmosphere and by subliming it into pure crystalline ferric chloride. i
Patent FI-91425-B (FI)
Title: Band seal in the drying space of a dryer
Inventor: LEHTINEN JUKKA
IPC: D21F5/00
Filed: 1993-02-01
Granted: 1994-03-15
Abstract: This invention concerns the sealing bands at the edges of the drying space of the Condebelt dryer described in Finnish patent No. 54514. In this arrangement, the web being dried is located in a nearly air-free space between two metal bands or between a somewhat well heat- conducting band or a membrane together with drying wire gauzes. The one metal band is heated and the other one cools; the heated band 1 evaporates the moisture in the web 2 being dried and the moisture condenses on the surface of the cooling band 2, which is separated from the web with the drying wire gauzes 3, 4. The invention is characterized in that the drying chamber between the metal bands 1 and 7 of the Condebelt layout is sealed from the edges with sealing profiles, which go around the drying section pressed against the metal band without any other firm fastening to the metal band or wire gauzes and which moreover each have their own web <IMAGE>
Patent FI-101943-B (FI)
Inventor: LEGRAND HUGUES
IPC: B22D11/06
Filed: 1994-04-13
Granted: 1998-09-30
Abstract: The continuous casting machine includes two contra-rotating rolls (1, 2) with parallel axes arranged opposite each other, with a certain spacing, and on the axial ends of which two side walls (5a) bear so as to define a casting space (3) between the rolls. The device for rapidly changing the side wall (5a) includes a small barrel (14) comprising fastening means (16) for at least two side walls (5) in positions resulting from one another by means of a rotation through a specific angle about the axis of the small barrel. Means for rotationally displacing the small barrel in steps having an amplitude corresponding to the specific angle of rotation make it possible to displace a replacement side wall (5b) from a standby position to a position occupied by the active side wall (5a) to be replaced. <IMAGE>
Patent FI-117506-B (FI)
Inventor: MOELLER-BREMER CHRISTINE
IPC: C02F3/34
Filed: 1995-03-23
Granted: 2006-11-15
Abstract: Reducing slime- and film-formation in appts. in which water from paper- or cellulose-machines is circulated, comprises addn. of nutrients, which favour growth of non-sessile microorganisms rather than sessile microorganisms, to the circulating water.
Patent FI-110313-B (FI)
Inventor: PARVIAINEN SEPPO
IPC: B23B41/00
Filed: 1997-04-03
Granted: 2002-12-31
Abstract: A method for drilling holes into a mantle of a cylinder of a paper machine while the cylinder is in its site of operation in the paper machine. The holes are drilled into the cylinder mantle by a drilling device having drill bits and which is transferred after each drilling cycle to the next drilling position. When drilling the holes, the device is supported on cylinders placed adjacent to and above the cylinder to be machined and/or on the cylinder to be machined by fastening supports of the device. Before the drilling is started, the device is locked in its position by locking fastening supports in a desired position and, the holes are drilled into the cylinder placed underneath from the top toward the bottom. The device includes drill bits, a frame construction, a drive gear for transferring and rotating the drill bits during the drilling, fastening supports for supporting the device in its place in the drilling position against the cylinders placed above and adjacent to the cylinder to be machined and/or against the cylinder to be machined, and an actuator for locking the device in its place in the drilling position.
Patent HU-200957-B (HU)
Title: Apparatus for continuous cooling and solidifying melts first metal-oxide melts
Inventor: DIETRICH RAINER
IPC: B22D11/06
Filed: 1988-03-11
Abstract: If a liquid metal oxide is fed to the nip of an inwardly cooled pair of rolls to cool and solidify, the rolls are subjected to a great material fatigue because of the constantly changing high heat stresses. A configuration of the rolls with few notches can be achieved by an approximation of the contour of a spherical hood. This is achieved in that each of the rolls (1,2) is designed as a truncated conical section, in that adjacent to the base (9,10), exhibiting the greater diameter of each truncated conical section a cylindrical section (5,6) with the diameter of the base (9,10) and a substantially open front surface (23) is provided. Each truncated conical section is closed, by a plane wall, on the front surface (7,8) with the smaller diameter.
Patent HU-205371-B (HU)
Title: Process for producing substituted alkylamide derivatives of teicoplanin compounds
Inventor: MALABARBA ADRIANO
IPC: A61P31/04
Filed: 1988-02-23
Abstract: The present invention is directed to teicoplanin derivatives in which position 63 of the glycopeptide core is substituted with a substituted alkylamide.
Patent HU-198410-B (HU)
Inventor: RACZ ATTILA
IPC: B32B33/00
Filed: 1985-05-28
Abstract: A berendezés egy hőálló acélcsövön (1) elhelyezett önmagában ismert anyagból készített tűzálló burkolatokból (2, 3) és ezen egy, vagy több rétegű tűzálló anyag olvadékából készített tűzálló bevonatból (4) áll.
Patent HU-193315-B (HU)
Inventor: BAKOS LASZLO
IPC: E04F17/02
Filed: 1985-06-05
Abstract: A találmány tárgya huzatnövelő hatásfokozó gravitációs szellőzéshez födémen vagy tetőhéjazaton elhelyezve különösen többszintes épületeknél. Jellemzője a találmánynak a hőenergia felvételre alkalmas átfolyó rendszerű tartály (2), továbbá ehhez csővezetékkel (3, 31) csatlakozó hőleadó (4), amely a szellőzőkürtőben (5) attól hőszigetelt módon van beépítve. A hatásfokozó alkalmazható lapos- és magastetős épületeknél egyaránt.  1. ábra -1-
Patent HU-190128-B (HU)
Inventor: MAGDA ZOLTAN
IPC: G05D27/02
Filed: 1983-07-08
Abstract: Növényház! klímaterek leképzésére vonatkozó eljárás során a klimatérben a paraméterek érzékelésére térhálós érzókelórendszert helyezünk el, az egyidejűleg analóg módon mórt paramétereket küszöbértékekkel összehasonlítva bináris alakra hozzuk, majd a bináris jeleket a klímatér klimajellemzóinek fűggvénykapcsolatát tartalmazó célorientált logikai program segítségével feldolgozzuk, és a klimatér paramétereit optimalizáló és ener- giagazdaságosan beállító beavatkozó jeleket képezünk. Az eljárást megvalósító berendezésben az érzékelők (1) küszöbérték beállító és különbség képző fokozat (2) bemenetelre csatlakoznak a fokozat (2) kimenetei állítható programegység (5) bemenetelre vannak kötve, és a programegység (5) kimenetéi teljesítményerősítő fokozaton (6) keresztül klimatérben elhelyezett beavatkozó szervekkel vannak összekapcsolva. (3. ábra)
Patent HU-200495-B (HU)
Inventor: PUCHNER ALAJOS
IPC: E04B1/00
Filed: 1988-05-31
Abstract: Az építményeknek több, egymástól távközzel húzódó
sorokban elrendezett térelemei (1) vannak. Az
egyes sorokban a térelemek (1) egymáshoz képest
hézagosán - oldalirányú távközökkel - helyezkednek
el. A térelem (l)-sorok közötti terek — hajók -
nyeregtető-elemekkel (4), a térelemek (1) közötti foghíjak
pedig lapostetó-elemekkel (6) vannak lefedve,
és oldalt végfalelemekkel (5) vannak lezárva
Patent HU-214632-B (HU)
Title: Process for producing cyclohexenol derivatives
Inventor: BRINER PAUL HOWARD
IPC: C07C271/40
Filed: 1991-09-02
Abstract: The invention provides cyclohexenol derivatives of the general formula <CHEM> in which n represents an integer from 0 to 5; each R represents a halogen atom, nitro, cyano, hydroxyl, alkyl, haloalkyl, alkoxy, haloalkoxy, amino, alkylamino, dialkylamino, alkoxycarbonyl, carboxyl, alkanoyl, alkylthio, alkylsulphinyl, alkylsulphonyl, carbamoyl, alkylamido, cycloalkyl or phenyl group; and R<1>, R<2> and R<3> independently represent a hydrogen atom or an alkyl group, with the provisos that when R<1>, R<2> and R<3> all represent a hydrogen atom then n is not 0 and, when R<1>, R<2> and R<3> all represent a hydrogen atom and n is 1, R does not represent a fluorine atom substituted at the 4-position of the phenyl ring; and a process for their preparation. Compounds of formula I are useful as intermediates in the preparation of certain fungicidally active cyclopentane derivatives.
Patent HU-193445-B (HU)
Inventor: MOLNAR IMRE
IPC: B66D1/00
Filed: 1985-08-16
Abstract: A találmány tárgya készülék úszókábel mozgatására, előnyösen daruk futómacskáihoz és pályához kötött villamos járművek áramellátásához, vezetősínen mozgó, kábelt hordozó görgős kocsik segítségével, melyek egy helyhez kötött csatlakozótól adott távolságban levő mozgó fogyasztóig vontatják a kábelt. A találmány szerinti megoldás lényege, hogy a vezetősínen (1) mozgatható, azonos felépítésű görgős kocsik (2) egymással a közöttük elhelyezett úszókábel (3) hosszánál rövidebb vontató huzallal (6) vannak egymással rögzítetten összekötve, az egymás melletti görgős kocsik (2) olyan kilincsművel vannak ellátva, amelyeknek a kilincse (12) sorban a helyhez kötött csatlakozó (5) felőli görgős kocsin (2), a beakadó csapja (17) pedig a minderkori következő görgős kocsin (2) van rögzítve, mig a vontató huzalok (6) egyik vége az előző görgős kocsi (2) kilincskarjához (20), másik vége pedig a következő görgős kocsihoz (2) mereven van rögzítve. Előnyös megvalósítás esetén a görgős kocsik (2) alaplapot (7), ehhez gördülő csapággyal (8) csapágyazott és csavarkötései (10) rögzített görgőket (9) tartalmaznak, amelyek a vezetősínt (1) közrefogják, az alaplapon (7) rögzített csap (11) körül elforgatható, kilincskarral (20) és húzórugóval (13) ellátott kilincs (12) van felszerelve, amely a következő görgős kocsi (2) alaplapjához (7) rögzített beakadó csaphoz (17) kapcsolódik. A görgős kocsikon (2) kábeltám (18) van rögzítve  -1-
Patent HU-189991-B (HU)
Title: Process for producing benzene derivatives with four substituents
Inventor: SHINMA NOBUO
IPC: C07C49/84
Filed: 1981-11-09
Abstract: Neue tetra-substituierte Benzolderivate der Formel
     worin X Sauerstoff, Schwefel oder Hydroxyimino; Y Methylen oder Imino; R 1  Hydroxy, Phosphonooxy, Glycosyloxy, aciliertes Glycosyloxy, Acyloxy oder nieder-Alkoxycarbonyloxy; R 2  nieder-Alkoxy, nieder-Alkenyloxy oder nieder-Alkylthio; R 3  nieder-Alkoxy; R 4  nieder-Alkyl, p-nieder-Alkoxybenzoyl oder substituiertes oder unsubstituiertes Phenyl, Benzyl, Pyridylmethyl, Fürturyl, Tetrahydrofurfuryl, Thenyl, Tetrahydrothenyl, Pyrrolylmethyl, Pyrrolinylmethyl oder Pyrrolidinylmethyl darstellt, mit der Bedingung, daß X nicht Methylen ist, wenn R 4  Alkyl, Phenyl, substituiertes Phenyl, Benzyl oder p-Hydroxybenzyl ist und mit der weiteren Bedingung, daß R 2  und R 3  voneinander verschieden sind, wenn R 4  p-Methoxybenzyl und Y Methylen ist, und pharmazeutisch anwendbare Salze davon, sind antiviral wirksam. Sie können nach mehreren Verfahrensweisen hergestellt werden.