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.)
Novartis AG
BASF Schweiz AG
Original Assignee
Ciba Geigy AG
Ciba AG
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Filing date
Publication date
Priority claimed from CH567463Aexternal-prioritypatent/CH442293A/en
Application filed by Ciba Geigy AG, Ciba AGfiledCriticalCiba Geigy AG
Publication of ES299526A1publicationCriticalpatent/ES299526A1/en
Procedure for obtaining new methyl-androstenes of formula ** (See formula) ** wherein R1 represents a hydrogen atom or a methyl group; R2 a hydroxyl group, free, esterified or etherified; R3 a hydrogen atom or a saturated or unsaturated unsaturated or unsaturated aliphatic hydrocarbon radical, R2 and R3 together a free or protected oxo group, characterized in that the compounds corresponding to the above formula, saturated in positions 1,2, are dehydrogenated in these positions, or compounds corresponding to formula (I) having a hydroxyl group in the 3-position are dehydrogenated to 3-oxo compounds, and if desired, any hydroxyl group, or any esterified or etherified group, is esterified or etherified, or oxo protected group, is released, and/or any hydroxyl group is dehydrogenated, and/or in any compound containing a 17-oxo group, this is converted, if desired, with temporary protection of the 3-oxo group, in a hydroxyl group, if desired, while at the same time a lower aliphatic hydrocarbon radical is introduced, at the l7 alpha position and, if desired, the hydroxyl group thus formed is esterified or etherified. (Machine-translation by Google Translate, not legally binding)
ES299526A1963-05-061964-05-05Procedure for the obtaining of new methystandrostens (Machine-translation by Google Translate, not legally binding)
ExpiredES299526A1
(en)
A procedure for the preparation of 3-espiro-3-diazirinaesteroides or 3-espiro-3-diaziridina steroides. (Machine-translation by Google Translate, not legally binding)
A procedure for the preparation of a new bis nor-18, 19 alcohiled progesterone in position 13. (Machine-translation by Google Translate, not legally binding)