Preparation and Use of Cysteine Orthoesters for Solid-Supported Synthesis of Peptides
作者:Zedu Huang、Darren J. Derksen、John C. Vederas
DOI:10.1021/ol100645t
日期:2010.5.21
Synthesis of a chiral cysteine derivative 2 with the carboxyl protected by an acid-labile 4-methyl-2,6,7-trioxabicyclo[2.2.2]octyl (OBO) orthoester is reported. A disulfide anchoring strategy is used to link the sulfur of this OBO cysteine derivative onto modified trityl polystyrene resin for synthesis of peptides having C-terminal cysteine (Cys) residues. Fmoc-based solid phase peptide synthesis affords
据报道,合成了一种手性半胱氨酸衍生物2,其羧基被酸不稳定的4-甲基-2,6,7-三氧杂双环[2.2.2]辛基(OBO)原酸酯保护。使用二硫键锚定策略将该OBO半胱氨酸衍生物的硫连接到改性的三苯甲基聚苯乙烯树脂上,以合成具有C端半胱氨酸(Cys)残基的肽。基于Fmoc的固相肽合成提供了三肽模型,而没有明显的差向异构。该方法用于制备口服活性止痛剂克他啡啡及其Cys1非对映异构体。