<(2S,3R,4R)-5-(benzyloxy)-3-hydroxy-4-methyl-2-(methylamino)pentanoyl>-L-2-aminobutyryl-sarcosyl-N-methyl-L-leucyl-L-valyl-N-methyl-L-leucyl-L-alanine benzyl ester 、
Fmoc-D-Ala-MeLeu-MeLeu-MeVal-OH 在
N-甲基吗啉 、 (benzotriazo-1-yloxy)tris(dimethylamino)phosphonium hexafluorophosphate 作用下,
以
二氯甲烷 为溶剂,
反应 60.0h,
以44%的产率得到<<(9-fluorenylmethyl)oxy>carbonyl>-D-alanyl-N-methyl-L-leucyl-N-methyl-L-leucyl-N-methyl-L-valyl-<(2S,3R,4R)-5-(benzyloxy)-3-hydroxy-4-methyl-2-(methylamino)pentanoyl>-L-2-aminobutyryl-sarcosyl-N-Me-L-leucyl-L-valyl-N-Me-L-leucyl-L-alanine benzyl ester