作者:Yassin M. Elbatrawi、Chang Won Kang、Juan R. Del Valle
DOI:10.1021/acs.orglett.8b00912
日期:2018.5.4
The first chemical synthesis of L-156,373 (1), a potent oxytocin receptor antagonist isolated from Streptomyces silvensis, is reported. Assembly of the unusual d-Piz-l-Piz dipeptide subunit was achieved through a sequential electrophilic amination–acylation–deprotection strategy followed by late-stage Piz ring formation. Synthesis and incorporation of a novel N-hydroxy-l-isoleucine building block is
报道了从银链霉菌中分离出的一种强效催产素受体拮抗剂L-156,373(1)的第一个化学合成方法。组件中的异常的d -Piz-升-Piz二肽亚单位通过连续的电胺化酰化脱保护策略来实现,随后后期的Piz环的形成。还描述了新型N-羟基-1-异亮氨酸结构单元的合成和掺入。将该亚单体方法进一步应用于从Fmoc-Glu(t Bu)-OH构件开始的1的二-δ-氧代哌嗪酸类似物的合成。