UN PROCEDIMIENTO PARA LA PREPARACION DE COMPUESTOS DE ACIDOS 2-PENEM-3-CARBOXILICOS

摘要

Cpds. of formula (I) and their pharmaceutically acceptable salts are new where R = -alk-X-R1; X = imidazolyl, 1,2,3-triazolyl, 1,2,4-triazolyl or tetrazolyl; R1 = H or 1-4C alkyl; R2 = H or an in-vivo hydrolysable ester gp.; and alk = 1-4C alkylene.