1. Daiichi College of Pharmaceutical Sciences, Tamagawa-cho, Minami-ku, Fukuoka 815, Japan;2. Shionogi Research Laboratory, Shionogi & Co., Ltd., Fukushima-ku, Osaka 553, Japan
Abstract:
The CD spectra of dehydroellagitannins and related compounds have empirically shown that the absolute configuration at C-1′ of the dehydrohexahydroxydiphenoyl group can be determined by the Cotton effect around 200 nm.