ES429338A1 - Procedure for the preparation of the steroid 21-acetate of 16-alpha, 17-alpha-ciclopentilidendioxi-3,20-oliona (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the preparation of the steroid 21-acetate of 16-alpha, 17-alpha-ciclopentilidendioxi-3,20-oliona (Machine-translation by Google Translate, not legally binding)
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.)
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wyeth Holdings LLC
Original Assignee
American Cyanamid Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by American Cyanamid CofiledCriticalAmerican Cyanamid Co
Priority to ES0429338ApriorityCriticalpatent/ES429338A1/en
Publication of ES429338A1publicationCriticalpatent/ES429338A1/en
Process for the preparation of steroid 21-acetate 16 α, 17 α -cyclopentylidenedioxy-3,20-dione, characterized in that it comprises reacting 9 α -fluor 11 β, 16 β, 17,21-tetrahydroxy-1,4-pregnadiene-3,20-dione with perchloric acid and cyclopentane, treat the reaction product with pyridine and acetic anhydride, and recover the desired product.
ES0429338A1974-08-171974-08-17Procedure for the preparation of the steroid 21-acetate of 16-alpha, 17-alpha-ciclopentilidendioxi-3,20-oliona (Machine-translation by Google Translate, not legally binding)
ExpiredES429338A1
(en)
Procedure for the preparation of the steroid 21-acetate of 16-alpha, 17-alpha-ciclopentilidendioxi-3,20-oliona (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of the steroid 21-acetate of 16-alpha, 17-alpha-ciclopentilidendioxi-3,20-oliona (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of the steroid 21-acetate of 16-alpha, 17-alpha-ciclopentilidendioxi-3,20-oliona (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of the steroid 21-acetate of 16-alpha, 17-alpha-ciclopentilidendioxi-3,20-oliona (Machine-translation by Google Translate, not legally binding)
A procedure to obtain delta4,6-3-ceto esteroides from the andrºstano and pregnano series (Machine-translation by Google Translate, not legally binding)
6-fluoromethyl-3-oxo-4,6-dienic and 1,4,6-trienic steroids of the androstane,19-nor androstane and pregnane series and process for the manufacture thereof