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.)
Merck and Co Inc
Original Assignee
Merck and Co Inc
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 Merck and Co IncfiledCriticalMerck and Co Inc
Priority to ES0307405ApriorityCriticalpatent/ES307405A1/en
Publication of ES307405A1publicationCriticalpatent/ES307405A1/en
Process for obtaining steroids, and especially for preparing estra-4,9-dien-3,17-diones, which comprises the reaction of a 3-hydroxy-estra-1,3, 5 (10), 9 (11 ) -tetraen-17-one with a 2,2-dialkyldioxolane; the conversion of the resulting ethylenedioxy compound to a 5-ether; the reaction of the compound thus obtained with a peracid; the reaction of the resulting 9,11-epoxy compound with an alkali metal in liquid ammonia; the reaction of the resulting compound with a phosphorus oxyhalide, and the reaction of the 2,5 (10), 9 (11) -estratriene thus obtained with acid. (Machine-translation by Google Translate, not legally binding)
ES0307405A1964-12-011964-12-01Procedure for the obtaining of steroids. (Machine-translation by Google Translate, not legally binding)
ExpiredES307405A1
(en)
A procedure for the preparation of a 1,2 alpha-methylen -6,7 alpha-dialometilen-20-espirox-4-eno 3 oxygenate. (Machine-translation by Google Translate, not legally binding)