PROCESS FOR PREPARING [S-(R*,S*)] - beta -[[[1-[1-OXO-3- (4-PIPERIDINYL) PROPYL] -3-PIPERIDINYL] CARBONYL] AMINO] -3- PYRIDINEPROPANOIC ACID AND DERIVATIVES

摘要

A process for preparing a compound of formula (I) wherein R<1> and R<2> are independently selected from the group consisting of hydrogen, lower alkyl and halogen.