Sagesaka Y M, Uemura T, Watanabe N, Sakata K, Uzawa J
Central Research Institute, Ito-en Co., Ltd., Shizuoka, Japan.
Biosci Biotechnol Biochem. 1994 Nov;58(11):2036-40. doi: 10.1271/bbb.58.2036.
A new glucuronide saponin (1) was isolated as its methyl ester (2) from the leaves of Camellia sinensis var. sinensis. On the basis of its spectral data and the results of chemical degradation, the structure was elucidated to be 3-O-[beta-D-galactopyranosyl(1-->2)-[beta-D- xylopyranosyl(1-->2)-alpha-L-arabinopyranosyl(1-->3)]- beta-D-glucuronopyranosyl]-21-O-cinnamoyl-16,22-di-O-acetylbarr ingtogenol C.
从中华变种茶树的叶子中分离出一种新的葡萄糖醛酸皂苷（1），其甲酯形式为（2）。根据其光谱数据和化学降解结果，确定其结构为3 - O - [β - D - 吡喃半乳糖基（1→2） - [β - D - 吡喃木糖基（1→2） - α - L - 吡喃阿拉伯糖基（1→3）] - β - D - 吡喃葡萄糖醛酸基] - 21 - O - 肉桂酰基 - 16,22 - 二 - O - 乙酰基巴林托醇C。
