Stereoselective Total Synthesis of (11<i>β</i>)-11-Methoxycurvularin
作者:Karuturi Rajesh、Vangaru Suresh、Jondoss Jon Paul Selvam、Dokuburra Chanti Babu、Yenamandra Venkateswarlu
DOI:10.1002/hlca.200900136
日期:2010.1
A simple and highly efficient stereoselectivetotalsynthesis of (11β)‐11‐methoxycurvularin (5), a polyketide natural product, was achieved. The synthesis commenced with a Cu‐mediated regioselective opening of (2S)‐2‐methyloxirane (6) and comprised a Keck asymmetric allylation and intramolecular Friedel–Crafts acylation as key steps (Scheme 2).
Stereoseletive Total Synthesis of 11-α- and 11-β-Methoxycurvularins
作者:J. Yadav、A. Raju、K. Ravindar、B. Reddy
DOI:10.1055/s-0029-1218621
日期:2010.3
Total synthesis of 11-alpha-methoxycurvularin and 11-beta-methoxycurvularin has been accomplished in a highly stereoselective manner by utilizing Jacobsen hydrolytic kinetic resolution, Maruoka asymmetric allylation and intramolecular Friedel-Crafts acylation as key steps.
First Total Syntheses and Spectral Data Corrections of 11-α-Methoxycurvularin and 11-β-Methoxycurvularin
作者:Qiren Liang、Yongquan Sun、Binxun Yu、Xuegong She、Xinfu Pan
DOI:10.1021/jo701885n
日期:2007.12.1
[Graphics]Concise and efficient total syntheses of 11-alpha-methoxycurvularin and 11-beta-methoxycurvularin were accomplished for the first time. The three-component linchpin coupling and intramolecular acylation reactions were key steps, in which we found the spectral data of 11-alpha-methoxycurvularin and 11-beta-methoxycurvularin, reported in the literature, were reversed with each other.
Stereoselective syntheses of 11-α-methoxycurvularin and 11-β-methoxycurvularin
A stereoselective synthesis of potent cytotoxic macrolides, 11-alpha-methoxycurvularin and 11-beta-methoxycurvularin has been accomplished. The synthesis entailed Maruoka asymmetric allylation to introduce the stereocentres at C-11 and the key fragment was installed by using Grubbs cross-metathesis followed by CBS-reduction. (C) 2009 Published by Elsevier Ltd.
An efficient stereoselective total synthesis of 11β-methoxycurvularin
作者:J. S. Yadav、C. Divya Vani、N. Bhasker、B. V. Subba Reddy
DOI:10.3998/ark.5550190.p008.453
日期:——
A very short and efficientstereoselectivetotal sy nthesis of a macrocyclic ketone, 11 β-methoxy- curvularin was achieved by employing the Sharpless asymmetric epoxidation, formation of propargyl alcohols from an epoxy-chloride, and intr amolecular Friedel-Crafts acylation as the key steps.