Total Synthesis and Revision of Absolute Stereochemistry of Antillatoxin, an Ichthyotoxic Cyclic Lipopeptide from Marine Cyanobacterium Lyngbya majuscula
Antillatoxin is an ichthyotoxic cyclic lipopeptide isolated by Gerwick and co-workers from the marine cyanobacterium Lyngbyamajuscula collected in Curaçao. Although we have finished the stereoselective total synthesis of antillatoxin having the proposed structure with (4S,5R)-configuration, we have found that the synthetic sample was not identical with the natural one and the proposed structure should
Ring-Closing Metathesis Approaches towards the Total Synthesis of Rhizoxins
作者:Marc Liniger、Christian M. Neuhaus、Karl-Heinz Altmann
DOI:10.3390/molecules25194527
日期:——
Efforts are described towards the totalsynthesis of the bacterial macrolide rhizoxin F, which is a potent tubulin assembly and cancer cell growth inhibitor. A significant amount of work was expanded on the construction of the rhizoxin core macrocycle by ring-closing olefin metathesis (RCM) between C(9) and C(10), either directly or by using relay substrates, but in no case was ring-closure achieved
对细菌大环内酯根瘤菌素 F 的全合成进行了描述,它是一种有效的微管蛋白组装和癌细胞生长抑制剂。通过直接或使用中继基板在 C(9) 和 C(10) 之间进行闭环烯烃复分解 (RCM),在构建根瘤菌核心大环方面进行了大量工作,但在任何情况下都没有环-关闭实现。通过在 C(9)/C(10) 位点闭环炔烃复分解 (RCAM) 可以形成大环。必需的二炔是从作为 RCM 底物合成的一部分制备的高级中间体中获得的。虽然在闭环步骤中形成的三键直接转化为根瘤菌素大环的 C(9)-C(10)E 双键被证明是难以捉摸的,通过将三键的双钴六羰基配合物与乙基哌啶鎓次磷酸酯还原解络合,可以高选择性地获得相应的 Z 异构体。自由基诱导的双键异构化、C(15) 侧链的完整阐述和 C(11)-C(12) 双键的定向环氧化完成了根瘤菌素 F 的全合成。
Total Synthesis of Antillatoxin, an Ichthyotoxic Cyclic Lipopeptide, Having the Proposed Structure. What Is the Real Structure of Antillatoxin?
作者:Fumiaki Yokokawa、Takayuki Shioiri
DOI:10.1021/jo981744m
日期:1998.11.1
Enantioselective Total Synthesis of Didesepoxyrhizoxin
作者:A Kende
DOI:10.1016/00404-0399(50)09264-
日期:1995.7.3
BAKER, RAYMOND;CASTRO, JOSE L., J. CHEM. SOC. PERKIN TRANS. PT 1,(1990) N, C. 47-65