Abstract
Chemical investigation of the lichen Parmotrema indicum Hale led to the isolation of one new diphenyl ether, parmetherine D (1), along with eight known compounds (2-9). The structures were determined by analysis of MS and NMR data and by comparison with the literature. Compounds 1, 2, and 7 were evaluated for α-glucosidase inhibition. Only compound 1 exhibited significant inhibition.
Acknowledgment
The authors would like to thank Thammasat University Research Unit in Natural Products Chemistry and Bioactivities for chemical support.
Disclosure statement
No potential conflict of interest was reported by the authors.