Tetrahedron Letters p. 881 - 884 (1998)
Update date:2022-09-26
Topics:
Gabbutt, Christopher D.
Hepworth, John D.
Heron, B. Mark
Thomas, Jean-Luc
Syntheses of dehydrorotenoid and benzoxanthone units from 2'-hydroxyacetophenone are described which feature a novel migration of spiro-substituted chroman-4-ones during their oxidative ring expansion. Conjugate reduction affords a trans B/C fused rotenoid and the related cis and trans fused tetrahydrobenzoxanthones.
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Doi:10.1016/S0957-4166(98)00017-2
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(1998)
