JPS6241599B2 - - Google Patents
Info
- Publication number
- JPS6241599B2 JPS6241599B2 JP55155806A JP15580680A JPS6241599B2 JP S6241599 B2 JPS6241599 B2 JP S6241599B2 JP 55155806 A JP55155806 A JP 55155806A JP 15580680 A JP15580680 A JP 15580680A JP S6241599 B2 JPS6241599 B2 JP S6241599B2
- Authority
- JP
- Japan
- Prior art keywords
- group
- formula
- represented
- cyanocholest
- hydrogen atom
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 125000006239 protecting group Chemical group 0.000 claims description 21
- -1 24-oxocholesta-5,22-diene Chemical compound 0.000 claims description 18
- SFZCMSIRBIGWRT-HGEACTLWSA-N 2-[(1s)-1-[(8s,9s,10r,13r,14s,17r)-10,13-dimethyl-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1h-cyclopenta[a]phenanthren-17-yl]ethyl]-5-methylhexanenitrile Chemical class C1C=C2CCCC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)C(C#N)CCC(C)C)[C@@]1(C)CC2 SFZCMSIRBIGWRT-HGEACTLWSA-N 0.000 claims description 16
- 125000004435 hydrogen atom Chemical group [H]* 0.000 claims description 14
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims description 14
- XFXPMWWXUTWYJX-UHFFFAOYSA-N Cyanide Chemical compound N#[C-] XFXPMWWXUTWYJX-UHFFFAOYSA-N 0.000 claims description 6
- 125000004043 oxo group Chemical group O=* 0.000 claims description 6
- 238000004519 manufacturing process Methods 0.000 claims description 5
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 24
- 239000000243 solution Substances 0.000 description 22
- 238000006243 chemical reaction Methods 0.000 description 17
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 16
- 150000001875 compounds Chemical class 0.000 description 14
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 description 12
- WYURNTSHIVDZCO-UHFFFAOYSA-N Tetrahydrofuran Chemical compound C1CCOC1 WYURNTSHIVDZCO-UHFFFAOYSA-N 0.000 description 12
- 239000000047 product Substances 0.000 description 11
- 239000002904 solvent Substances 0.000 description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 10
- 239000000203 mixture Substances 0.000 description 10
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 8
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 8
- 239000000741 silica gel Substances 0.000 description 8
- 229910002027 silica gel Inorganic materials 0.000 description 8
- RTEXIPZMMDUXMR-UHFFFAOYSA-N benzene;ethyl acetate Chemical compound CCOC(C)=O.C1=CC=CC=C1 RTEXIPZMMDUXMR-UHFFFAOYSA-N 0.000 description 7
- MDHYEMXUFSJLGV-UHFFFAOYSA-N beta-phenethyl acetate Natural products CC(=O)OCCC1=CC=CC=C1 MDHYEMXUFSJLGV-UHFFFAOYSA-N 0.000 description 7
- 238000001819 mass spectrum Methods 0.000 description 7
- 230000000704 physical effect Effects 0.000 description 7
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 6
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 description 6
- 235000017557 sodium bicarbonate Nutrition 0.000 description 6
- 229910000030 sodium bicarbonate Inorganic materials 0.000 description 6
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical class O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 description 6
- 238000003786 synthesis reaction Methods 0.000 description 6
- YLQBMQCUIZJEEH-UHFFFAOYSA-N tetrahydrofuran Natural products C=1C=COC=1 YLQBMQCUIZJEEH-UHFFFAOYSA-N 0.000 description 6
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 5
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000001914 filtration Methods 0.000 description 5
- 229920006395 saturated elastomer Polymers 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 description 4
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 description 4
- 238000004440 column chromatography Methods 0.000 description 4
- 235000019441 ethanol Nutrition 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 238000004809 thin layer chromatography Methods 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- WFDIJRYMOXRFFG-UHFFFAOYSA-N Acetic anhydride Chemical compound CC(=O)OC(C)=O WFDIJRYMOXRFFG-UHFFFAOYSA-N 0.000 description 3
- KFZMGEQAYNKOFK-UHFFFAOYSA-N Isopropanol Chemical compound CC(C)O KFZMGEQAYNKOFK-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- UAOMVDZJSHZZME-UHFFFAOYSA-N diisopropylamine Chemical compound CC(C)NC(C)C UAOMVDZJSHZZME-UHFFFAOYSA-N 0.000 description 3
- 239000000543 intermediate Substances 0.000 description 3
- NNFCIKHAZHQZJG-UHFFFAOYSA-N potassium cyanide Chemical compound [K+].N#[C-] NNFCIKHAZHQZJG-UHFFFAOYSA-N 0.000 description 3
- BWZVCCNYKMEVEX-UHFFFAOYSA-N 2,4,6-Trimethylpyridine Chemical compound CC1=CC(C)=NC(C)=C1 BWZVCCNYKMEVEX-UHFFFAOYSA-N 0.000 description 2
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 description 2
- YXHKONLOYHBTNS-UHFFFAOYSA-N Diazomethane Chemical compound C=[N+]=[N-] YXHKONLOYHBTNS-UHFFFAOYSA-N 0.000 description 2
- MZRVEZGGRBJDDB-UHFFFAOYSA-N N-Butyllithium Chemical compound [Li]CCCC MZRVEZGGRBJDDB-UHFFFAOYSA-N 0.000 description 2
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 125000002777 acetyl group Chemical group [H]C([H])([H])C(*)=O 0.000 description 2
- 150000007933 aliphatic carboxylic acids Chemical class 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 2
- WPYMKLBDIGXBTP-UHFFFAOYSA-N benzoic acid Chemical group OC(=O)C1=CC=CC=C1 WPYMKLBDIGXBTP-UHFFFAOYSA-N 0.000 description 2
- 125000004432 carbon atom Chemical group C* 0.000 description 2
- KXZJHVJKXJLBKO-UHFFFAOYSA-N chembl1408157 Chemical compound N=1C2=CC=CC=C2C(C(=O)O)=CC=1C1=CC=C(O)C=C1 KXZJHVJKXJLBKO-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000012043 crude product Substances 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 125000005843 halogen group Chemical group 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 239000012046 mixed solvent Substances 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000012299 nitrogen atmosphere Substances 0.000 description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000035484 reaction time Effects 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000012279 sodium borohydride Substances 0.000 description 2
- 229910000033 sodium borohydride Inorganic materials 0.000 description 2
- VZGDMQKNWNREIO-UHFFFAOYSA-N tetrachloromethane Chemical compound ClC(Cl)(Cl)Cl VZGDMQKNWNREIO-UHFFFAOYSA-N 0.000 description 2
- 239000008096 xylene Substances 0.000 description 2
- QAXCUKPIFMXXIG-HPVZSNEMSA-N (6r)-6-[(8s,9s,10r,13r,14s,17r)-10,13-dimethyl-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1h-cyclopenta[a]phenanthren-17-yl]-2-methylheptane-1,1,1-triol Chemical compound C1C=C2CCCC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@@H](CCCC(C)C(O)(O)O)C)[C@@]1(C)CC2 QAXCUKPIFMXXIG-HPVZSNEMSA-N 0.000 description 1
- YQTCQNIPQMJNTI-UHFFFAOYSA-N 2,2-dimethylpropan-1-one Chemical group CC(C)(C)[C]=O YQTCQNIPQMJNTI-UHFFFAOYSA-N 0.000 description 1
- BJJNXPWBSRNETP-RWZFDMQLSA-N 2-[(6R)-6-[(8S,9S,10R,13R,14S,17R)-10,13-dimethyl-2,3,4,7,8,9,11,12,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]-2-methylheptoxy]oxane Chemical compound O1C(CCCC1)OCC(C)CCC[C@@H](C)[C@H]1CC[C@H]2[C@@H]3CC=C4CCCC[C@]4(C)[C@H]3CC[C@]12C BJJNXPWBSRNETP-RWZFDMQLSA-N 0.000 description 1
- ZRXHLJNBNWVNIM-UHFFFAOYSA-N 3-methyl-1-benzofuran Chemical compound C1=CC=C2C(C)=COC2=C1 ZRXHLJNBNWVNIM-UHFFFAOYSA-N 0.000 description 1
- OEWNLHDQCVAEPN-UHFFFAOYSA-N 3-methyl-3-(oxan-2-yloxy)butan-2-one Chemical compound CC(=O)C(C)(C)OC1CCCCO1 OEWNLHDQCVAEPN-UHFFFAOYSA-N 0.000 description 1
- 125000002672 4-bromobenzoyl group Chemical group BrC1=CC=C(C(=O)*)C=C1 0.000 description 1
- 102000004190 Enzymes Human genes 0.000 description 1
- 108090000790 Enzymes Proteins 0.000 description 1
- 239000012448 Lithium borohydride Substances 0.000 description 1
- CWVZGJORVTZXFW-UHFFFAOYSA-N [benzyl(dimethyl)silyl]methyl carbamate Chemical compound NC(=O)OC[Si](C)(C)CC1=CC=CC=C1 CWVZGJORVTZXFW-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 150000008065 acid anhydrides Chemical class 0.000 description 1
- 239000003377 acid catalyst Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 125000003236 benzoyl group Chemical group [H]C1=C([H])C([H])=C(C([H])=C1[H])C(*)=O 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 125000004063 butyryl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- GMRQFYUYWCNGIN-NKMMMXOESA-N calcitriol Chemical compound C1(/[C@@H]2CC[C@@H]([C@]2(CCC1)C)[C@@H](CCCC(C)(C)O)C)=C\C=C1\C[C@@H](O)C[C@H](O)C1=C GMRQFYUYWCNGIN-NKMMMXOESA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 125000002668 chloroacetyl group Chemical group ClCC(=O)* 0.000 description 1
- WORJEOGGNQDSOE-UHFFFAOYSA-N chloroform;methanol Chemical compound OC.ClC(Cl)Cl WORJEOGGNQDSOE-UHFFFAOYSA-N 0.000 description 1
- 150000003983 crown ethers Chemical class 0.000 description 1
- 125000004093 cyano group Chemical group *C#N 0.000 description 1
- ZOGHDTBRWUEJDP-UHFFFAOYSA-N diethylalumanylium;cyanide Chemical compound N#[C-].CC[Al+]CC ZOGHDTBRWUEJDP-UHFFFAOYSA-N 0.000 description 1
- 229940043279 diisopropylamine Drugs 0.000 description 1
- 238000001952 enzyme assay Methods 0.000 description 1
- IDGUHHHQCWSQLU-UHFFFAOYSA-N ethanol;hydrate Chemical compound O.CCO IDGUHHHQCWSQLU-UHFFFAOYSA-N 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 239000002024 ethyl acetate extract Substances 0.000 description 1
- IYWCBYFJFZCCGV-UHFFFAOYSA-N formamide;hydrate Chemical compound O.NC=O IYWCBYFJFZCCGV-UHFFFAOYSA-N 0.000 description 1
- 150000004820 halides Chemical class 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000005457 ice water Substances 0.000 description 1
- 238000003018 immunoassay Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 150000002825 nitriles Chemical class 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 125000003232 p-nitrobenzoyl group Chemical group [N+](=O)([O-])C1=CC=C(C(=O)*)C=C1 0.000 description 1
- CASUWPDYGGAUQV-UHFFFAOYSA-M potassium;methanol;hydroxide Chemical compound [OH-].[K+].OC CASUWPDYGGAUQV-UHFFFAOYSA-M 0.000 description 1
- BDERNNFJNOPAEC-UHFFFAOYSA-N propan-1-ol Chemical compound CCCO BDERNNFJNOPAEC-UHFFFAOYSA-N 0.000 description 1
- 125000001325 propanoyl group Chemical group O=C([*])C([H])([H])C([H])([H])[H] 0.000 description 1
- LFAGQMCIGQNPJG-UHFFFAOYSA-N silver cyanide Chemical compound [Ag+].N#[C-] LFAGQMCIGQNPJG-UHFFFAOYSA-N 0.000 description 1
- 229940098221 silver cyanide Drugs 0.000 description 1
- NPFDZRLGEXMQGV-UHFFFAOYSA-N silver;acetonitrile;nitrate Chemical compound [Ag+].CC#N.[O-][N+]([O-])=O NPFDZRLGEXMQGV-UHFFFAOYSA-N 0.000 description 1
- 125000001412 tetrahydropyranyl group Chemical group 0.000 description 1
- 125000003944 tolyl group Chemical group 0.000 description 1
- 125000004665 trialkylsilyl group Chemical group 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 125000003774 valeryl group Chemical group O=C([*])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/55—Design of synthesis routes, e.g. reducing the use of auxiliary or protecting groups
Landscapes
- Investigating Or Analysing Biological Materials (AREA)
- Steroid Compounds (AREA)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55155806A JPS5780400A (en) | 1980-11-07 | 1980-11-07 | 22-cyanocholest-5-ene and its preparation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP55155806A JPS5780400A (en) | 1980-11-07 | 1980-11-07 | 22-cyanocholest-5-ene and its preparation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5780400A JPS5780400A (en) | 1982-05-19 |
| JPS6241599B2 true JPS6241599B2 (forum.php) | 1987-09-03 |
Family
ID=15613855
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP55155806A Granted JPS5780400A (en) | 1980-11-07 | 1980-11-07 | 22-cyanocholest-5-ene and its preparation |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5780400A (forum.php) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0254661U (forum.php) * | 1988-10-11 | 1990-04-20 |
-
1980
- 1980-11-07 JP JP55155806A patent/JPS5780400A/ja active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0254661U (forum.php) * | 1988-10-11 | 1990-04-20 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5780400A (en) | 1982-05-19 |
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| SU422142A3 (ru) | СПОСОБ ПОЛУЧЕНИЯ СТЕРОИДНЫХ ПРОИЗВОДНЫХ1Изобретение относитс к новому способу получени стероидных производных, имеющих в положении 17а-углеводородный остаток, насыщенный или ненасыщенный, замещенный или незамещенный, или диклоалкильиый радикал, и обладающих физиологической активностью.Известен способ получени стероидных производных, имеющих в положении 17а-углево- дородный радикал, например соединени 3-ок- со-13р-этил-17а-этинил-17,р - оксигона - 4,9,11- триена, заключающийс в том, что получают вначале 3-этилендиокси-17-оксо-13|3-этилгона- 4,9,1 i-триен, который подвергают взаимодействию с реагентом этинилировани с последующим гидролизом кетальной группы в положении 3 Г7а-этинильного производного.Однако, кетализирование 3-оксогруппы соответствующего 3,17-диоксостероида проходит не избирательно, с низким выходом промежуточного 3-кетал , что снижает выход целевого продукта.Кроме того, в известном способе в качестве исходного продукта используют 4,9,11-триено- вый стероид с замкнутым кольцом А, который можно получить при полном синтезе стероида только из промежуточного соединени с незамкнутым кольцом А.Целью предлагаемого способа вл етс устранение указанных недостатков и увеличение выхода целевого продукта.Указанна цель достигаетс за счет того, что в качестве исходного продукта используют легко доступный при стероидном синтезе 9,11-диеновый стероид с незамкнутым коль-5 цом А, который подвергают кетализированию преимущественно в присутствии ортоформиа- та низщего алкила, полученный 3,5-бисэтилен- диокси-13р-алкил-17 - оксо - 4,5-секогона-9,11- диен подвергают взаимодействию с металло-10 органическим реагентом, в образующемс при этом соединении, имеющем в положении 17а- углеводородный остаток и вл ющемс 3,5- дикеталем, гидролизуют кетальные группы и замыкают кольцо А в щелочной среде.15 В соответствии с изобретением описываетс способ получени стероидных производных общей формулы2025В которой R представл ет алкильный радикал, содерл^ащий от 1 до 4 атомов углерода;X представл ет собой насыщенный или ненасыщенный, замещенный или незамещенный 30 углеводородный остаток, содержащий от 1 до 6 атомов углерода, или циклоалкильный ра- | |
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