Abstract
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.
Original language | English |
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Pages (from-to) | 881-884 |
Number of pages | 4 |
Journal | Tetrahedron Letters |
Volume | 39 |
Issue number | 8 |
DOIs | |
Publication status | Published - 19 Feb 1998 |
Externally published | Yes |