TANNINS AND RELATED POLYPHENOLS OF THEACEOUS PLANTS .4. MONOMERIC AND DIMERIC HYDROLYZABLE TANNINS HAVING A DILACTONIZED VALONEOYL GROUP FROM SCHIMA-WALLICHII KORTH

被引：0
|
作者：
YOSHIDA, T
CHOU, T
NITTA, A
OKUDA, T
机构：
[1] OKAYAMA UNIV, FAC PHARMACEUT SCI, OKAYAMA 700, JAPAN
[2] KYOTO UNIV, FAC PHARMACEUT SCI, SAKYO KU, KYOTO 606, JAPAN
来源：
CHEMICAL & PHARMACEUTICAL BULLETIN | 1991年 / 39卷 / 09期
关键词：
SCHIMA-WALLICHII; THEACEAE; TANNIN; SCHIMAWALIN-A; SCHIMAWALIN-B; CAMELLIIN-B; HYDROLYZABLE TANNIN DIMER; DILACTONIZED VALONEOYL GROUP;
D O I：
暂无
中图分类号：
R914 [药物化学];
学科分类号：
100701 ;
摘要：
Two new hydrolyzable tannins, schimawalins A (10) and B (17), have been isolated from the dried flowers of Schima wallichii (DC) KORTH. (Theaceae), and their structures, having a dilactonized valoneoyl group in the molecule, were established based on spectral and chemical evidence. Eight known hydrolyzable tannins, including camelliin B (8), the main constituent of the flower, with a macrocyclic dimer structure, were also isolated. The orientation of the valoneoyl groups in camelliin B was completely determined.
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页码：2247 / 2251
页数：5
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