Author:
Cameron Donald W.,Caliskan Ece,Griffiths Peter G.
Abstract
Oxy-substituted homophthalic anhydrides have been synthesized by cycloaddition
of di- and tri-oxy butadienes to the allenic diester (1). By base-catalysed
cycloaddition to appropriate benzoquinones they have afforded new syntheses of
viocristin (19), isoviocristin (20) and analogous 1,4-anthraquinones. Related
chemistry has led to the naphthalene (34) and the anhydride (35),
intermediates in published syntheses of semivioxanthin and 6-
methylpretetramid respectively.
Cited by
13 articles.
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