T. Katsuki*, Yuko Matsuoka, K. Aikawa
Dec 31, 2005
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Journal
Heterocycles
Abstract
Two possible stereoisomers of cryptofolione, isolated from the Cryptocarya species in South Africa and Brazil, were synthesized in an enantioselective manner by using asymmetric hetero Diels-Alder reaction as the key steps. Comparative evaluation of the 'H NMR, 1 3 C NMR, CD spectra, and specific rotation of the synthetic compounds with those reported in the literature was performed to establish the absolute configuration of cryptofolione to be [6R, 10S, 12R].