@article{58e2b573d81e4101a015d088d95315ac,
title = "Isotheasaponins B1-B3 from Camellia sinensis var. sinensis tea leaves",
abstract = "Three saponins, isotheasaponins B1-B3, were isolated from the leaves of the tea plant Camellia sinensis var. sinensis, and their structures were determined to be theasapogenol B [β-d-galactopyranosyl(1 → 2)][β-d-xylopyranosyl(1 → 2)-α-l-arabinopyranosyl(1 → 3)]-β-d-gulcopyranosiduronic acid with two acyl groups by spectroscopic analysis.",
keywords = "Camellia sinensis var. sinensis, Isotheasaponin, Tea leaves, Theaceae, Theasapogenol B",
author = "Keiko Kobayashi and Toshiaki Teruya and Kiyotake Suenaga and Yoko Matsui and Hideki Masuda and Hideo Kigoshi",
note = "Funding Information: We thank Professor Masayuki Yoshikawa, Kyoto Pharmaceutical University, for the authentic sample of theasaponin E 1 and the spectroscopic data for theasaponins E 1 and E 2 . This work was supported in part by the 21st COE program from the Ministry of Education, Culture, Sports, Science, and Technology, Japan, Shorai Foundation for Science and Technology, TARA Project (University of Tsukuba), and the University of Tsukuba Projects. The authors are grateful to the Chemical Analysis Center, University of Tsukuba, for the NMR experiments.",
year = "2006",
month = jul,
doi = "10.1016/j.phytochem.2006.05.025",
language = "English",
volume = "67",
pages = "1385--1389",
journal = "Phytochemistry",
issn = "0031-9422",
publisher = "Elsevier Limited",
number = "13",
}