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Your search keyword '"Liu, Yan"' showing total 3 results
3 results on '"Liu, Yan"'

1. Nine new compounds from the whole plants of Rehmannia henryi.

Author

Zhou, Jie, Shi, Guo-Ru, Liu, Yan-Fei, Chen, Ruo-Yun, and Yu, De-Quan

Subjects
LIVER disease prevention, ANTINEOPLASTIC agents, CELL lines, GLYCOSIDES, MOLECULAR structure, NUCLEAR magnetic resonance spectroscopy, RESEARCH funding, SPECTRUM analysis, PLANT extracts
Abstract

Eight new iridoids (1–8) and an ionone glucoside (9), together with 31 known compounds (10–40), were isolated from the whole plants of Rehmannia henryi. The structures of these compounds were elucidated on the basis of their spectroscopic data and chemical evidence. [ABSTRACT FROM AUTHOR]

Published
2019
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2. New polyoxygenated cyclohexene and polyoxygenated seco-cyclohexene from Uvaria boniana.

Author

Chen, Zhong, Liu, Yan-Li, Xu, Qiong-Ming, Liu, Jang-Yun, Duan, Hua-Qing, and Yang, Shi-Lin

Subjects
*CHROMATOGRAPHIC analysis, *HYDROCARBON analysis, *ANTINEOPLASTIC agents, *BIOLOGICAL assay, *CELL culture, *HYDROCARBONS, *INFRARED spectroscopy, *MASS spectrometry, *MOLECULAR structure, *NUCLEAR magnetic resonance spectroscopy, *PHARMACEUTICAL chemistry, *RESEARCH funding, *PLANT extracts
Abstract

A new polyoxygenated cyclohexene bonianol A (1) and another new polyoxygenated seco-cyclohexene bonianol B (2) were isolated from the leaves of Uvaria boniana, and their structures were established on the basis of spectroscopic methods including IR, HR-ESI-MS, 1D, and 2D NMR. [ABSTRACT FROM AUTHOR]

Published
2013
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3. C28 sterols with a cyclopentane ring at C-22 and 26 from cape gooseberry (berries of Physalis pubeacens L.).

Author

Xu, Qiong-Ming, Liu, Yan-Li, Feng, Yu-Lin, Li, Xiao-Ran, and Yang, Shi-Lin

Subjects
*ANTINEOPLASTIC agents, *BERRIES, *CHROMATOGRAPHIC analysis, *COLORIMETRY, *HERBAL medicine, *MASS spectrometry, *CHINESE medicine, *MOLECULAR structure, *NUCLEAR magnetic resonance spectroscopy, *PHARMACEUTICAL chemistry, *RESEARCH funding, *TOXICITY testing, *PHYTOCHEMICALS, *ANALYTICAL chemistry, *PHARMACODYNAMICS
Abstract

Two new C28 sterols with a cyclopentane ring at C-22 and 26, alkesterol A (1) and alkesterol B (2), along with β-sitosterol (3), were isolated from the berries of Physalis pubeacens L. (cape gooseberry). The structures of the new compounds were established by HR-EI-MS, 1D and 2D (1H-1H COSY, HSQC, HMBC) NMR experiments. The known compound was identified by comparison of spectral data with published references. The two new compounds showed some cytotoxic activities by MTT assay. [ABSTRACT FROM AUTHOR]

Published
2010
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