GB970587A - New steroid compounds and processes for their preparation - Google Patents
New steroid compounds and processes for their preparationInfo
- Publication number
- GB970587A GB970587A GB7833/64A GB783364A GB970587A GB 970587 A GB970587 A GB 970587A GB 7833/64 A GB7833/64 A GB 7833/64A GB 783364 A GB783364 A GB 783364A GB 970587 A GB970587 A GB 970587A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pregn
- ketal
- trione
- ene
- diene
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J9/00—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of more than two carbon atoms, e.g. cholane, cholestane, coprostane
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J41/00—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring
- C07J41/0033—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring not covered by C07J41/0005
- C07J41/0055—Normal steroids containing one or more nitrogen atoms not belonging to a hetero ring not covered by C07J41/0005 the 17-beta position being substituted by an uninterrupted chain of at least three carbon atoms which may or may not be branched, e.g. cholane or cholestane derivatives, optionally cyclised, e.g. 17-beta-phenyl or 17-beta-furyl derivatives
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J5/00—Normal steroids containing carbon, hydrogen, halogen or oxygen, substituted in position 17 beta by a chain of two carbon atoms, e.g. pregnane and substituted in position 21 by only one singly bound oxygen atom, i.e. only one oxygen bound to position 21 by a single bond
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07J—STEROIDS
- C07J75/00—Processes for the preparation of steroids in general
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Steroid Compounds (AREA)
Abstract
The invention comprises pregn-4-ene-3-one derivatives having the general formula: <FORM:0970587/C1/1> in which R6 represents two hydrogen atoms or the methylene group =CH2 and R7 represents the group H(OH) or the oxygen atom =O or their corresponding 3-ketal derivatives and processes for the preparation thereof wherein the 3-ethylene ketal of 21-hydroxy-trans-pregn-4,17(20)-diene-3,11-dione is oxidized to obtain the ethylene ketal of trans-pregna-4,17(20)-diene-3,11,21-trione, reducing the 4,17(20)-diene to obtain a 3-ethylene ketal of pregn-4-ene-3,11,21-trione, reacting said 3-ketal with formaldehyde to obtain the corresponding 3-ketal of 20-methylene-pregn-4-ene-3,11,21-trione which is deketalized to obtain 20-methylene-pregn-4-ene-3,11,21-trione. The deketalization of the intermediates may be effected if desired. Oxidation may be effected with manganese dioxide, reduction with palladium black and deketalization with a mineral acid. The 11-hydroxy compounds are preferably obtained by reduction of the 3,11-dione with e.g. lithium aluminium hydride, to form the 3,11b -dihydroxy compound and reoxidizing e.g. with MnO2, to obtain the 3-keto-11-hydroxy compound. Specification 970,588 also is referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR835529A FR1365261A (en) | 1960-08-10 | 1960-08-10 | Novel 3-oxo delta steroid compounds and method of preparation |
Publications (1)
Publication Number | Publication Date |
---|---|
GB970587A true GB970587A (en) | 1964-09-23 |
Family
ID=8737231
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8251/64A Expired GB970588A (en) | 1960-08-10 | 1961-08-10 | New steroid compounds and processes for their preparation |
GB7833/64A Expired GB970587A (en) | 1960-08-10 | 1961-08-10 | New steroid compounds and processes for their preparation |
GB28983/61A Expired GB970586A (en) | 1960-08-10 | 1961-08-10 | New steroid compounds and processes for their preparation |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8251/64A Expired GB970588A (en) | 1960-08-10 | 1961-08-10 | New steroid compounds and processes for their preparation |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB28983/61A Expired GB970586A (en) | 1960-08-10 | 1961-08-10 | New steroid compounds and processes for their preparation |
Country Status (4)
Country | Link |
---|---|
CH (4) | CH399454A (en) |
ES (4) | ES269700A1 (en) |
FR (4) | FR1365261A (en) |
GB (3) | GB970588A (en) |
-
1960
- 1960-08-10 FR FR835529A patent/FR1365261A/en not_active Expired
- 1960-11-10 FR FR843613A patent/FR753M/fr active Active
- 1960-11-10 FR FR843614A patent/FR754M/fr active Active
- 1960-11-10 FR FR843612A patent/FR752M/fr active Active
-
1961
- 1961-07-20 CH CH855661A patent/CH399454A/en unknown
- 1961-07-20 CH CH856061A patent/CH401963A/en unknown
- 1961-07-20 CH CH855961A patent/CH399456A/en unknown
- 1961-07-20 CH CH855861A patent/CH399455A/en unknown
- 1961-08-09 ES ES0269700A patent/ES269700A1/en not_active Expired
- 1961-08-09 ES ES0269698A patent/ES269698A1/en not_active Expired
- 1961-08-09 ES ES0269699A patent/ES269699A1/en not_active Expired
- 1961-08-09 ES ES0269697A patent/ES269697A1/en not_active Expired
- 1961-08-10 GB GB8251/64A patent/GB970588A/en not_active Expired
- 1961-08-10 GB GB7833/64A patent/GB970587A/en not_active Expired
- 1961-08-10 GB GB28983/61A patent/GB970586A/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
CH399456A (en) | 1965-09-30 |
ES269699A1 (en) | 1961-11-16 |
FR754M (en) | 1961-08-21 |
FR753M (en) | 1961-08-21 |
GB970588A (en) | 1964-09-23 |
ES269700A1 (en) | 1961-11-16 |
ES269697A1 (en) | 1961-11-16 |
GB970586A (en) | 1964-09-23 |
CH399455A (en) | 1965-09-30 |
FR1365261A (en) | 1964-07-03 |
CH399454A (en) | 1965-09-30 |
ES269698A1 (en) | 1961-11-16 |
CH401963A (en) | 1965-11-15 |
FR752M (en) | 1961-08-21 |
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