Absolute configurations of some oligostilbenes from Vitis coignetiae and Vitis vinifera ‘Kyohou’

✍ Scribed by Junko Ito; Kanako Gobaru; Tomoyuki Shimamura; Masatake Niwa; Yoshiaki Takaya; Yoshiteru Oshima

• Book ID: 104208610
• Publisher: Elsevier Science
• Year: 1998
• Tongue: French
• Weight: 523 KB
• Volume: 54
• Category: Article
• ISSN: 0040-4020
• DOI: 10.1016/s0040-4020(98)00332-9

✦ Synopsis

Hepatotoxic oligostilbenes, (+)-vitisin A and (+)-c/s-vitisin A were isolated as a pure form, respectively, by the method of recycled HPLC. The structure of c/s-vitisin A was confirmed by the photochemical transformation of vitisin A. The absolute configurations of (+)-ampelopsin A, (+)-ampelopsin B, (+)-vitisin A, (+)-c/s-vitisin A and (+)-vitisin D were also determined by chemical and spectroscopic methods.