Characterization of tyrosinase inhibitors in the twigs of Cudrania tricuspidata and their structure-activity relationship study.

Zong-Ping Zheng, Hui-Yuan Tan, Jie Chen, Mingfu Wang

State Key Laboratory of Food Science and Technology, Jiangnan University, 1800 Lihu Avenue, Wuxi 214122, Jiangsu, PR China.

Fitoterapia 2013 Jan

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The twigs of Cudrania tricuspidata were found to show strong tyrosinase inhibitory activity, and further detailed component analysis resulted in the isolation of a new flavanol glucoside, (2S,3S)-2,3-trans-dihydromorin-7-O-β-d-glucoside (1), plus twenty-seven known compounds (2-28). Their structures were elucidated on the basis of ESI-MS and NMR spectral data. Among the isolated compounds, trans-dihydromorin (8), oxyresveratrol (9), and steppogenin (12) were found to exhibit significant tyrosinase inhibition activities. Moreover, the structure-activity relationship of these isolated compounds was also discussed. Copyright © 2012 Elsevier B.V. All rights reserved.

Citation

Zong-Ping Zheng, Hui-Yuan Tan, Jie Chen, Mingfu Wang. Characterization of tyrosinase inhibitors in the twigs of Cudrania tricuspidata and their structure-activity relationship study. Fitoterapia. 2013 Jan;84:242-7