A Racemization Test in Peptide Synthesis Using 4-(4,6-Dimethoxy-1,3,5-triazin-2-yl)-4-methylmorpholinium Chloride (DMT-MM).
作者:Munetaka Kunishima、Akiko Kitao、Chiho Kawachi、Yasunobu Watanabe、Shin Iguchi、Kazuhito Hioki、Shohei Tani
DOI:10.1248/cpb.50.549
日期:——
various solvents during coupling between 4-methoxybenzyloxycarbonyl (Z(OMe))-Gly-L-Ala-OH and phenylalanine benzyl ester (H-Phe-OBzl) with 4-(4,6-dimethoxy-1,3,5-thiazin-2-yl)-4-methylmorpholinium chloride (DMT-MM). The reaction occurred without substantial racemization in AcOEt, tetrahydrofuran (THF), N,N-dimethylformamide (DMF), CH3CN, and 2-PrOH, while a slight racemization was observed in dimethyl
在4-甲氧基苄氧基羰基(Z(OMe))-Gly-L-Ala-OH和苯丙氨酸苄酯(H-Phe-OBzl)与4之间的偶联过程中,已研究了C-末端氨基酸(Ala)的外消旋作用-(4,6-二甲氧基-1,3,5-噻嗪-2-基)-4-甲基吗啉氯化物(DMT-MM)。反应在AcOEt,四氢呋喃(THF),N,N-二甲基甲酰胺(DMF),CH3CN和2-PrOH中没有显着外消旋化的情况下发生,而在二甲基亚砜(DMSO),EtOH和MeOH中观察到了轻微的外消旋化。外消旋程度可能与溶剂的极性相关。