摘要:
The invention relates to the products: ##STR1## in which: R.sub.1 =alkyl, alkenyl, alkynyl and alkylthio,R.sub.2B, R.sub.3B are defined in the specification,m=0 to 2,Y.sub.B =--Y.sub.1B --B--Y.sub.2B,Y.sub.1B =aryl,B=a single bond or --CO--, --O--, --NH--CO--, --CO--NH--, --O--(CH.sub.2).sub.p --,p=1 to 3,Y.sub.2B represents hydrogen, cyano, carboxy, in all isomer forms and salts, their use as medicaments.