Synthesis of a benzodiazepine analogous sydnotriazepine
作者:Wilhelm Fleischhacker、Ernst Urban
DOI:10.1002/jhet.5570260236
日期:1989.3
cleavage of the N-acyl group to give sydnone imine 3 instead of cyclisation to sydnotriazepine 8. Condensation of 1 with protected glycines 5a-5c by dicyclohexylcarbodiimide yielded glycineamides 6a, 6b and 6c. Compound 6c was selectively deprotected and converted to sydnotriazepine 7, a benzodiazepineanalogoussydnotriazepine.