Compounds of general formula (I): ##STR1## in which: R.sub.1 represents a hydrogen atom or a lower alkyl group, R.sub.2 represents a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, a substituted or unsubstituted alkenyl group, a substituted or unsubstituted thienyl, furyl, pyrrolyl or pyridinyl group, X represents a hydrogen atom, Y represents a hydroxyl group, or else X and Y together represent an oxygen atom, their enantiomers, diastereoisomers and epimers. Medicaments.
通式(I)的化合物:##STR1##其中:R.sub.1代表氢原子或较低的烷基基团,R.sub.2代表取代或未取代的烷基基团,取代或未取代的芳基基团,取代或未取代的烯基基团,取代或未取代的
噻吩基团,
呋喃基团,
吡咯基团或
吡啶基团,X代表氢原子,Y代表羟基,或者X和Y一起代表一个氧原子,它们的对映体、异构体和环异构体。药物。