Regiospecific and highly stereoselective formation of benzisochroman-6,9-quinones. Synthesis of (±)-ventilagone and (±)-ventiloquinone H

Article abstract of DOI:10.1021/jo00292a016

An approach known to give regiospecific cycloadditions over a wide range of substrates has been applied to the synthesis of (±)-ventilagone and (±)-ventiloquinone H using a novel, electron-rich heterocyclic diene. The strategy provides for the sole format