Anthracyclines. Part 1. The synthesis of racemic daunomycinone and some related tetrahydronaphthacenequinones
Abstract
New tetrahydronaphthacenequinones, which are related in structure to the aglycones of the antitumour drugs adriamycin and daunomycin, have been synthesised. Racemic daunomycinone has been prepared by a new, mild procedure utilising a phthalide intermediate for annelation.