2-Oxadiazolyl- or 2-thiadiazolyl-phenylcarbamate and -phenylurea derivatives, their preparation and their use as intermediates

摘要

The present invention relates to substituted carbamates and ureas of formula (V) <CHEM> wherein R<1> represents a hydrogen or a halogen atom, or a C1-6alkyl, C1-6alkoxy or hydroxy group; R<2> represents an oxadiazole or thiadiazole ring substituted by a group selected from C1-6alkyl, C3-7cycloalkyl, -CH2C2-5alkenyl, -CH2C2-5alkynyl, phenyl or benzyl; X represents NH or an oxygen atom; and m represents zero, 1 or 2; which compounds are intermediates in the preparation of certain therapeutically active substituted phenylcarbamates and ureas.