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
作者:Thang Loi Pham、Patcharaporn Sae-Lao、Hannah Hui Min Toh、Dániel Csókás、Roderick W. Bates
DOI:10.1021/acs.joc.2c02033
日期:2022.12.2
The total synthesis of raistrickindole A has been achieved, thereby confirming the proposedstructure as an N-hydroxylated DKP. In the first but less selective approach, the DKP was built up by cyclization of a diastereoisomerically mixed N-hydroxylated dipeptide. In the second approach, the same DKP was constructed stereoselectively by the intramolecular Mitsunobu reaction of a hydroxamic acid. The
已经实现了 raistrickindole A 的全合成,从而证实了所提出的结构为N-羟基化 DKP。在第一种但选择性较低的方法中,DKP 是通过非对映异构混合的N-羟基化二肽的环化作用构建的。在第二种方法中,相同的 DKP 是通过异羟肟酸的分子内 Mitsunobu 反应立体选择性地构建的。合成通过立体选择性氧化环化完成。