An unprecedented gedunin rearrangement reaction converts a methyl group into the methylene group of a cyclopropyl ring-Science-Chemical Encyclopedia-lookchem

An unprecedented gedunin rearrangement reaction converts a methyl group into the methylene group of a cyclopropyl ring
Add time:07/14/2019 Source:sciencedirect.com

Herein we describe an unprecedented formation of a cyclopropane ring through the conversion of a methyl group that was not functionalized for the purpose. In a one-step reaction, 7-deacetoxy-7α-hydroxygedunin (4) afforded two new gedunin derivatives, namely 7-deacetoxy-13,14,18-cyclopropyl-7α,15β, 17ξ-trihydroxy-gedu-16-oic acid (7) and 7-deacetoxy-9,11-en-7α,15β-dihydroxygedunin (8) along with the known 7-deacetoxy-7,9-diene-15β-hydroxygedunin (5).

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