GB785683A - Cyclopentanopolyhydrophenanthrene compounds - Google Patents
Cyclopentanopolyhydrophenanthrene compoundsInfo
- Publication number
- GB785683A GB785683A GB9553/56A GB955356A GB785683A GB 785683 A GB785683 A GB 785683A GB 9553/56 A GB9553/56 A GB 9553/56A GB 955356 A GB955356 A GB 955356A GB 785683 A GB785683 A GB 785683A
- Authority
- GB
- United Kingdom
- Prior art keywords
- keto
- convertible
- acid hydrolysis
- group
- iodine
- 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
- 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)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention comprises compounds having the formula: <FORM:0785683/IV (a)/1> in which the 3-position is occupied either by a bivalent group convertible to keto by acid hydrolysis, e.g. a cyclic acetal or by a pair of univalent groups together convertible to a single keto group by acid hydrolysis, e.g. a non-cyclic acetal and of the formula: <FORM:0785683/IV (a)/2> in which the 3-position is occupied by a univalent group which is convertible to keto by acid hydrolysis, e.g. an enol ether and their preparation from the corresponding 3-substituted-11-keto-etienoylpyruvic acid by reaction with iodine. The reaction may be effected by bringing a buffered aqueous solution of the starting compound, e.g. with disodium phosphate, into intimate contact with iodine. An example discloses the production of d and dl - 3 - ethylenedioxy - 11,20 - diketo - 21 - iodopregnene. Specifications 763,208 and 785,684 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US785683XA | 1952-09-17 | 1952-09-17 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB785683A true GB785683A (en) | 1957-11-06 |
Family
ID=22144871
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB9553/56A Expired GB785683A (en) | 1952-09-17 | 1953-09-16 | Cyclopentanopolyhydrophenanthrene compounds |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB785683A (en) |
-
1953
- 1953-09-16 GB GB9553/56A patent/GB785683A/en not_active Expired
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