Reactions of ketene acetals. 10. Total syntheses of the anthraquinones rubrocomatulin pentamethyl ether, 2-acetylemodin, 2-acetyl-5-hydroxyemodin tetramethyl …
JL Grandmaison, P Brassard
文献索引：Grandmaison,J.-L.; Brassard,P. Journal of Organic Chemistry, 1978 , vol. 43, p. 1435 - 1438
Conjugated ketene acetal~ l-~(1, l-dialkoxybutadienes) or the vinylogues of ketene acetals4 have recently been used for the facile and regiospecific synthesis of a number of naturally occurring naphthoquinones and anthraquinones. These reagents have the advantage of being easy to prepare and quite reactive toward most quinonic substrates. Moreover they have been modified so as to introduce up to three groups with the desired orientation in a ...
