Yun-Feng Zhang, Zhi-Xiang Zhu, Wen-Xuan Wang, Hang Zhang, Li Liu, Shi-Lin Zhang, Yun-Fang Zhao, Yue-Lin Song, Jiao Zheng, Peng-Fei Tu, Hui-Xia Huo, Jun Li
Eleven condensed tannins were isolated from the roots of Indigofera stachyodes by various column chromatography techniques including silica gel, octadecyl silica(ODS), Sephadex LH-20, and semi-preparative high performance liquid chromatography(HPLC). These compounds were identified on the basis of physicochemical properties, nuclear magnetic resonance(NMR) and mass spectrometry(MS) data as stachyotannin A(1), epicatechin-(2β→O→7,4β→8)-epiafzelechin-(4β→8)-catechin(2), cinnamtannin D1(3), cinnamtannin B1(4), epicatechin-(2β→O→7,4β→8)-epiafzelechin-(4α→8)-epicatechin(5), gambiriin C(6), proanthocyanidin A1(7), proanthocyanidin A2(8), aesculitannin B(9), proanthocyanidin A4(10), and procyanidin B5(11)...
August 2021: Zhongguo Zhong Yao za Zhi, Zhongguo Zhongyao Zazhi, China Journal of Chinese Materia Medica