CC BY-ND-NC 4.0 · Synthesis 2019; 51(05): 1139-1156
DOI: 10.1055/s-0037-1611654
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General Synthetic Approach to Rotenoids via Stereospecific, Group-Selective 1,2-Rearrangement and Dual SNAr Cyclizations of Aryl Fluorides

Seiya Matsuoka
,
Kayo Nakamura
,
,
Department of Chemistry, Tokyo Institute of Technology, 2-12-1 O-okayama, Meguro-ku, Tokyo 152-8551, Japan   Email: ksuzuki@chem.titech.ac.jp
› Author Affiliations
This work was supported by JSPS KAKENHI Grant Numbers JP16H06351, JP16H01137, JP16H04107, JP18H04391 and Nagase ­Science and Technology Foundation.
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Publication History

Received: 13 December 2018

Accepted: 17 December 2018

Publication Date:
23 January 2019 (online)


Dedicated to the memory of the late Professor Sho Ito

Published as part of the 50 Years SYNTHESIS – Golden Anniversary Issue

Abstract

A general synthetic approach to rotenoids is described, featuring 1) stereospecific, group-selective 1,2-rearrangements of epoxy alcohols, and 2) SNAr oxy-cyclizations of aryl fluorides. The common intermediate epoxyketone, en route to (–)-rotenone and (–)-deguelin, was prepared from d-araboascorbic acid in five steps. Also described is the conversion of (–)-deguelin into oxidized congeners, (–)-tephrosin and (+)-12a-epi-tephrosin.

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