Catalytic asymmetric total syntheses of quinine and quinidine.

I. Raheem,Steven N. Goodman,E. Jacobsen

Published 2004 in Journal of the American Chemical Society

ABSTRACT

The catalytic, asymmetric syntheses of quinine and quinidine were achieved in 16 steps. The recently developed salen(Al)-catalyzed enantioselective Michael addition of methyl cyanoacetate served to set the crucial C4 stereocenter in 92% ee, and a late-stage asymmetric dihydroxylation was used to differentiate the common intermediate and access the two desired diastereomeric products with high selectivity.

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