Studies toward the total synthesis of Cytospolide E

被引:9
作者
Vadhadiya, Paresh M. [1 ]
Rout, Jeetendra K. [1 ]
Ramana, C. V. [1 ]
机构
[1] CSIR Natl Chem Lab, Div Organ Chem, Pune 411008, Maharashtra, India
关键词
Nonenolide; Yamaguchi esterification; Ring closing metathesis; Shiina lactonization; 20-Membered macrodiolide; ENANTIOSELECTIVE TOTAL-SYNTHESIS; ASYMMETRIC-SYNTHESIS; VERSATILE INTERMEDIATE; MIXED ANHYDRIDE; LACTONES; (R)-2,3-O-CYCLOHEXYLIDENEGLYCERALDEHYDE; ELEUTHEROBIN; DERIVATIVES;
D O I
10.1016/j.tet.2015.10.018
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
In this manuscript, we describe various approaches that we have examined towards the total synthesis of Cytospolide E. We initially attempted the RCM approach employing first and second generation Grubbs and Grubbs-Hoyeda catalysts resulting in the exclusive synthesis of the Z-isomer of Cytospolide E. With the Furstner catalyst, the dimerization involving the less hindered olefin was the exclusive event. Alternative approach documented is a successful cross-metathesis leading to a seco-acid with the requisite E-configuration and undesired macrodiolide formation during the attempted Shiina's lactonization. (C) 2015 Elsevier Ltd. All rights reserved.
引用
收藏
页码:9088 / 9094
页数:7
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