Choudhury R, Miriyala SRT, Resmi KR, Sridhar B, Kasa SRKM, Reddy DS. Total Synthesis and Revision of Stereochemistry of a Natural Benzo[
g]isochromene Stereodiad Isolated from
Rubia philippinensis.
Org Lett 2024;
26:2574-2579. [PMID:
38513268 DOI:
10.1021/acs.orglett.4c00553]
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Abstract
This study presents a total synthesis and revision of the stereochemical configuration of the conformationally flexible natural product benzo[g]isochromene stereodiad alongside its diastereomeric counterparts. The highlights of the synthesis are the TiCl4-mediated diastereoselective aldol reaction, Pd-catalyzed lactonization, and Schmidt glycosidation. Our efforts using total synthesis disclosed herein proved that a previously assigned structure required revision.
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