Diastereoselective Alkylation of Schiff Bases for the Synthesis of Lipidic Unnatural Fmoc-Protected α-Amino Acids
作者:Anna Maria Papini、Elena Nardi、Francesca Nuti、Jacques Uziel、Mauro Ginanneschi、Mario Chelli、Alberto Brandi
DOI:10.1002/1099-0690(200208)2002:16<2736::aid-ejoc2736>3.0.co;2-5
日期:2002.8
easily and have longer half-life times. For these reasons, the synthesis of enantiomerically pure Fmoc-protected lipidic α-amino acids is a relevant goal. Schiff bases originating from the reaction between the two enantiomers of 2-hydroxypinan-3-one with Gly-OtBu were alkylated with a series of long alkyl halides. Diastereomeric excesses were determined by reversed-phase HPLC, under conditions carefully
亲脂性增加的肽可以更容易地穿过细胞膜并具有更长的半衰期。由于这些原因,合成对映体纯 Fmoc 保护的脂质 α-氨基酸是一个相关的目标。源自 2-hydroxypinan-3-one 与 Gly-OtBu 的两种对映异构体之间反应的席夫碱被一系列长烷基卤化物烷基化。在为此类亲脂性底物精心选择的条件下,通过反相 HPLC 确定非对映体过量。(© Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)