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.)
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Merck KGaA
Original Assignee
E Merck AG
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Filing date
Publication date
Application filed by E Merck AGfiledCriticalE Merck AG
Publication of ES298220A1publicationCriticalpatent/ES298220A1/en
Process for the preparation of new steroids, characterized in that a 16-methylene-17alpha, 21-dihydroxy-20-keto-steroid or a 21-ester of one of such steroids is treated with an acid or with a Lewis acid and the product obtained, which probably has the structure of a 3'-oxo-4'-hydroxy-4'-cyclopentene- (1 ', 2'-16,17) -steroid, is possibly treated in a manner known per se, with agents of esterifying or etherifying action. (Machine-translation by Google Translate, not legally binding)
ES0298220A1963-04-011964-03-31Procedure for the preparation of new steroids (Machine-translation by Google Translate, not legally binding)
ExpiredES298220A1
(en)
A procedure for the preparation of 3-oxo 17-beta-metoxy 17-alpha-methyl estra-4.9, ii-triene. (Machine-translation by Google Translate, not legally binding)
Procedure for the preparation of 16 alpha, 17alfa-oxido-5alfa- and 5 beta-pregnano-3, 11, 20-triona (Machine-translation by Google Translate, not legally binding)