Total Synthesis and Evaluation of the Actin-Binding Properties of Microcarpalide and a Focused Library of Analogues
作者:Alois Fürstner、Takashi Nagano、Christoph Müller、Günter Seidel、Oliver Müller
DOI:10.1002/chem.200601370
日期:2007.2.2
intramolecular transesterification with formation of a hydroxylated butanolide skeleton does not annihilate their microfilament disrupting capacity. This finding calls for a reinvestigation of the biological profile of other fungal metabolites that embody a similar motif. Microcarpalide (1) serving as the calibration point for this comparative study was prepared by total synthesis based on ring-closing metathesis
一项比较研究表明,围绕真菌代谢产物microcarpalide(1)和pinolidoxin(2)建模的羟基化的10元内酯具有选择性的肌动蛋白结合特性。尽管比代表该领域标准的海洋天然产物latrunculin A效力低,但这种类型的非烯醇内酯的毒性明显较低,并且可以进行实质性的结构编辑。最显着的事实是,即使形成羟基化丁醇骨架的分子内酯交换反应也不会消除其微丝破坏能力。这一发现要求对体现相似基序的其他真菌代谢物的生物学特性进行重新研究。以闭环复分解(RCM)为关键步骤,通过全合成制备了作为本比较研究标准的微果皮(1)。所选择的路线相比毫不逊色先前方法该目标,并提供一个中型环烯烃的(E,Z) - 构型可通过催化剂的适当选择如先前由我们的基团所概述来控制的概念的进一步支持。已经通过晶体结构分析表征了作为本文研究的“天然产物样”化合物的代表性实例的9-表-微果香酸酯26和呋喃酮27。Z)一个中型环