The linear sequence H-(D-Val-L-Lac-L-Val-D-Hyv-)3OH of the cyclododeca-depsipeptide valinomycin was synthesized using three parallel methods: (1) homogeneous phase by stepwise N-terminal lengthening of H-L-Val-D-Hyv-OBzl with Boc-aminoacyl-hydroxy-acids; (2) on the same principle by solid-phase-synthesis on hydroxymethyl-polystyrene as well as; (3) by twofold fragment-condensation of H-D-Val-L-Lac-L-Val-D-Hyv-O-
使用三种平行方法合成了环十二碳二肽肽
缬氨霉素的线性序列H-(D-Val-L-Lac-L-Val-D-Hyv-)3 OH:(1)通过逐步延长N-末端的具有Boc-
氨基酰基-羟基酸的HL-Val-D-Hyv-OBzl; (2)以相同的原理通过固相合成在羟甲基聚
苯乙烯上;以及 (3)通过HD-Val-L-Lac-L-Val-D-Hyv-O-与Boc-D-Val-L-Lac-L-Val-D-Hyv-OH的两倍片段缩合。在所有三种方式中,产生了相同的十二肽肽,这些肽在环化后产生了
缬氨霉素的真实制剂。