作者:J. Matsoukas、Th. Tsegenidis、P. Cordopatis、D. Theodoropoulos
DOI:10.1016/s0040-4020(01)91142-1
日期:1984.1
N-Tritylamino acids activated with DCC/HOBt, were coupled with various amino acid derivatives without racemization. The trityl group was split off quantitatively in 10% CCl3COOH monohydrate or CH2ClCOOH in CH2Cl2. Under these conditions detritylation of N-Trt-Trp-Gly-NH2 proceeds without formation of an oxindole derivative and side alkylation products, even in the absence of a scavenger. Dipeptide
用DCC / HOBt活化的N-三苯甲基氨基酸与各种氨基酸衍生物偶联而没有外消旋作用。在10%CCl 3 COOH一水合物或CH 2 Cl 2中的CH 2 ClCOOH中将三苯甲基定量分离。在这些条件下,即使不存在清除剂,N-Trt-Trp-Gly-NH 2的去三苯甲基化反应也不会形成羟吲哚衍生物和副烷基化产物。二肽衍生物1和2表现出磁不对称性,归因于空间因素。