Stereoselective Total Synthesis of Marine Cyclodepsipeptide Calcaripeptides A–C
作者:Sayantan Das、Rajib Kumar Goswami
DOI:10.1021/jo5019798
日期:2014.10.17
The first stereoselective total syntheses of marine cyclodepsipeptides, calcaripeptides A–C, have been accomplished. Emphasis was given particularly in identification of an efficient strategy for the macrocyclization. The notable features of our synthesis include Evans alkylation, Crimmins syn-aldol, Crimmins acetate aldol, Wittig olefination, and Shiina macrolactonization reactions. An anomaly in
海洋环二肽首个立体选择性全合成钙肽A–C已完成。在确定大环化的有效策略时特别强调。我们合成的显着特征包括埃文斯烷基化,Crimmins顺式醇醛,Crimmins醋酸酯醇醛,Wittig烯烃化反应和Shiina大内酯化反应。在该合成研究过程中,对拟议的钙肽B的1 H NMR异常进行了修正。
Total Synthesis of Calcaripeptide C
作者:Shashikant Patil、Maruti Mali、Subhash Ghosh
DOI:10.1002/ejoc.202201078
日期:2022.12.19
Total synthesis of marine cyclodepsipeptide calcaripeptide C, isolated from Calcarisporium sp. Strain KF525 has been achieved by utilizing ring-closing metathesis as a key reaction.The strategy developed here is highly convergent and can be used for the large scale synthesis of calcaripeptide C.
从Calcarisporium sp.分离的海洋环缩肽 calcaripeptide C 的全合成。菌株 KF525 是通过利用闭环复分解作为关键反应实现的。这里开发的策略具有高度收敛性,可用于钙肽 C 的大规模合成。
Concise diastereoselective synthesis of calcaripeptide C via asymmetric transfer hydrogenation/Pd-induced chiral allenylzinc as a key reaction
The synthesis of the cyclodepsipeptide calcaripeptide C was accomplished with an overall yield of 10.7% by a catalytic asymmetric transfer hydrogenation (ATH) together with Marshall's allenylation as pivotal reactions.