Affiliation:
1. College of Pharmacy Guizhou University South section of Huaxi Road 2078 Guiyang 550025 P.R. China
2. State Key Laboratory of Functions and Applications of Medicinal Plants Guizhou Medical University 3491 Baijin Road Guiyang 550014 P. R. China
3. Kunming Institute of Botany Chinese Academy of Sciences (CAS) 132 Lanhei Road Kunming 650201 P. R. China
4. Guizhou Academy of Tobacco Science No.29 Longtanba Road Guiyang 550081 P. R. China
Abstract
AbstractOne novel compound, (R)‐3, 6‐diethoxy‐4‐hydroxycyclohex‐3‐en‐1‐one (1) and thirteen known compounds were isolated from the waste tobacco leaves. The structures of two compounds (1–2) were confirmed and attributed firstly by the extensive spectroscopic data, including 1D/2D NMR, IR, HR‐ESI‐MS, CD, and ECD spectra. Notably, seven compounds (2, 3, 9, 10, 11, 12, and 13) exhibited better tyrosinase inhibitory activity than the positive control kojic acid. The binding modes of these compounds revealed that their structure formed strong hydrogen bonds and van der Waals forces with the active sites of tyrosinase. These results indicated that waste tobacco leaves are good resources for developing tyrosinase inhibitors.