A Versatile Route to Benzocanthinones.

Abstract

Alkaloids U 0600A Versatile Route to Benzocanthinones. -Two routes are given for the synthesis of benzocanthinone (IV) and five analogues such as (VIII). The crude product mixtures contain several side products arising from dehalogenation, amide cleavage or non-regioselective cyclization. -(MARKGRAF*, J. H.; DOWST, A. A.; HENSLEY, L. A.; JAKOBSCHE, C. E.; KALTNER, C. J.; WEBB, P. J.; ZIMMERMAN, P. W.; Tetrahedron 61 (2005) 38, 9102-9110; Dep. Chem., Williams Coll., Williamstown, MA 01267, USA; Eng.) -Kieslich 01-200