期刊
STEROIDS
卷 86, 期 -, 页码 32-38出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.steroids.2014.04.015
关键词
Physalis angulata L var. villosa Bonati; UPLC ESI-MS analysis; Withanolides; QR induction activity
资金
- National Scientific Foundation of China (NSFC) [31170325]
- Zhejiang Key Science & Technological Program [2009C13028]
- Science and Technology Planning Project of Zhejiang Province [2011C37084]
- Zhejiang Provincial Program for the Cultivation of High-level Innovative Health Talents
In the present study, the EtOAc extract of the persistent calyx of Physalis angulata L var. villosa Bonati (PA) was tested for its potential quinone reductase (QR) inducing activity with glutathione (GSH) as the substrate using an UPLC-ESI-MS method. The result revealed that the PA had electrophiles that could induce quinone reductase (QR) activity, which might be attributed to the modification of the highly reactive cysteine residues in Keap1. Herein, three new withanolides, compounds 3, 6 and 7, together with four known withanolides, compounds 1, 2, 4 and 5 were isolated from PA extract. Their structures were determined by spectroscopic techniques, including H-1-, C-13 NMR (DEPT), and 2D-NMR (HMBC, HMQC, H-1, H-1-COSY, NOESY) experiments, as well as by HR-MS. All the seven compounds were tested for their QR induction activities towards mouse hepa 1c1c7 cells. (C) 2014 Elsevier Inc. All rights reserved.
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