申请人:Hook David
公开号:US20120142916A1
公开(公告)日:2012-06-07
The present invention relates to pyrrolidin-2-ones according to the formula (1), or salts thereof,
wherein R1 is hydrogen or a nitrogen protecting group, methods for their preparation and their use in the preparation of NEP-inhibitors, particularly in the preparation of N-(3-carboxyl-1-oxopropyl)-(4S)-(p-phenylphenylmethyl)-4-amino-(2R)-methyl butanoic acid ethyl ester or salt thereof.
本发明涉及公式(1)的吡咯烷-2-酮或其盐,其中R1为氢或氮保护基,其制备方法以及它们在NEP抑制剂的制备中的使用,特别是在N-(3-羧基-1-氧代丙基)-(4S)-(对苯基苯甲基)-4-氨基-(2R)-甲基丁酸乙酯或其盐的制备中的使用。