(2S,3S)-2-[[(4R)-2-[(1R)-1-[[(3S,4R,7S)-3-[(2S)-2-aminopropanoyl]oxy-7-methoxy-2,2,4-trimethyldecanoyl]amino]ethyl]-4-methyl-5H-1,3-thiazole-4-carbonyl]-methylamino]-5-[tert-butyl(dimethyl)silyl]oxy-3-methylpentanoic acid 在
N,N-二异丙基乙胺 、 N-[(dimethylamino)-3-oxo-1H-1,2,3-triazolo[4,5-b]pyridin-1-yl-methylene]-N-methylmethanaminium hexafluorophosphate 作用下,
以
二氯甲烷 为溶剂,
反应 24.0h,
以73%的产率得到TBS ether of [(R)-(ala)Thz]-halipeptin A