名称:
A convenient and high yield method to prepare 4-hydroxypyroglutamic acids
摘要:
RuO2/NaIO4 oxidation of N-Boc-4-silyloxy and 4-acetoxy proline methyl esters under ethyl acetate/water biphase condition gave N-Boc-4-silyloxy and 4-acetoxy pyroglutamic acid derivates in high yields. Desilylation with TBAF afforded both cis- and trans-N-Boc-methyl-4-hydroxy pyroglutamates. (C) 2001 DuPont Pharmaceuticals Company. Published by Elsevier Science Ltd. All rights reserved.
DOI:
10.1016/s0040-4039(01)01030-9