Concise chemoenzymatic synthesis of gabosine A, ent-epoformin and ent-epiepoformin
摘要:
An efficient methodology has been developed to synthesize three related enantiomerically pure natural and unnatural compounds, based on a chemoenzymatic approach. We confirmed the usefulness of 3-methyl-cis-1,2-cyclohexadienediol derived from a biotransformation of toluene, as a starting material in a rational and versatile route to produce gabosines and methyl substituted epoxycyclohexenones. (C) 2011 Elsevier Ltd. All rights reserved.
Chemoenzymatic Total Synthesis and Structural Revision of Ampelomins B, D, E, and <i>epi</i>-Ampelomin B
作者:Carolina Brindisi、Silvana Vázquez、Leopoldo Suescun、Gustavo Seoane、Victor S. Martín、Margarita Brovetto
DOI:10.1021/acs.joc.9b02472
日期:2019.12.20
Enantioselective synthesis of ampelomin B and epi-ampelomin B, D, and E was accomplished starting from toluene, through a chemoenzymatic sequence, in which stereoselective hydrogenation, Mitsunobu reaction, and regio- and stereoselective nucleophilic opening of an epoxide were used as the main transformations. Structuralrevision and absolute configuration of the natural compounds were carried out