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Xu T, Fan Z, Lou J, Du Q, Kong Y, Lu Y, Wu X. Enzymatic synthesis of vitexin glycosides and their activity. RSC Adv 2022; 12:23839-23844. [PMID: 36093238 PMCID: PMC9396635 DOI: 10.1039/d2ra04408k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/17/2022] [Accepted: 08/15/2022] [Indexed: 11/30/2022] Open
Abstract
Vitexin is an active component of many traditional chinese medicines, and is found in various plants. The low solubility of vitexin limits its pharmaceutical usage. In this study, solvent-stable β-fructosidase was used to glycosylate vitexin in organic solvents. The β-fructosidase showed high activity and stability in 30–80% (v/v) ethyl acetate with 90–99% yields of vitexin glycosides. Highly efficient synthesis of β-d-fructofuranosyl-(2→6)-vitexin (1.04 g L−1) and β-d-difructofuranosyl-(2→6)-vitexin (0.45 g L−1) was attained in 50% (v/v) ethyl acetate solvent system from 1.5 g L−1 vitexin. Two novel vitexin glycosides showed higher anti-tumor activities compared to that of vitexin by employing a human breast cancer cytotoxicity assay. Efficient enzymatic glycosylation of vitexin in hydrophobic organic and the novel vitexin glycosides showed higher anti-tumor activities.![]()
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Affiliation(s)
- Tingting Xu
- School of Medicine & Holistic Integrative Medicine, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Ziyun Fan
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Junqiao Lou
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Qi Du
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yue Kong
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Yujia Lu
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
| | - Xueming Wu
- State Key Laboratory Cultivation Base for TCM Quality and Efficacy, School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, 210023, China
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