| abstract |
The invention relates to products having the general formula I, wherein R1 is thienyl or phenyl optionally substituted, furyl, cycloalkyl, naphtyl, phenyl-phenyl, alkyl or alkenyl; R2 is methyl or ethyl; R3 is H, OH, alkyl, alkenyl, optionally substituted alkynyl, acetyl, hydroxy acetyl, optionally esterified or salified carboxy alkoxy, optionally esterified hydroxy alkyl; R4 is H, OH, alkyl, alkenyl, alkynyl optionally substituted by amino, alkyl or dialkyl amino, halogen, thioalkyl, alkoxy, trialkylsylyl or cyano; R5 is H or methyl; X is O, hydroxyimino or alkoxyimino; A and B are alpha -epoxy or a second bond; preparation method thereof, application thereof as drugs, compositions containing them and new intermediaries obtained. |