Total Synthesis of L-156,373 and an oxoPiz Analogue via a Submonomer Approach
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