VERFAHREN ZUR HERSTELLUNG VON 11BETA-CHLOR-STEROIDEN

摘要

(for the Contracting States : BE, CH, DE, FR, GB, IT, LI, LU, NL, SE) 1. 11 beta-chlorosteroids of general formula I see diagramm : EP0092173,P6,F1 wherein R is hydrogen or an acyl group of an organic carboxylic acid of up to 15 carbon atoms. (for the Contracting : AT) Process for the preparation of 11 beta-chlorosteroids of general formula I see diagramm : EP0092173,P7,F1 wherein R is hydrogen or an acyl group of an organic carboxylic acid of up 15 carbon atoms characterized in that a 11 beta-chloro-17-oxosteroid of the general formula II see diagramm : EP0092173,P7,F2 wherein, Y is a free oxo group of a hydrolyzable protected oxo group and see diagramm : EP0092173,P7,F3 is a double bond in the 4,5-, 5,6- or 5,10-positions or two double bonds in the 3- and 5-positions, is converted, in a known manner, with an organometallic chloroethynyl compound to a compound of general formula I in which R is hydrogen, a primary introduced 3-oxo protecting group is hydrolyzed and depending on the finally desired meaning of R, the 17-hydroxy group is optionally esterified, before or after removal of the protecting group.