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Abstract
A phytochemical investigation of a herb tea made from Thamnolia vermicularis led to the isolation of three new β-orcinol-type depsides (1, 2 and 3), along with seven known compounds hypothamnolic acid (4), 3′-methylevenic acid (5), baeomycesic acid (6), squamatic acid (7), methyl 3′-methyllecanorate (8), barbatinic acid (9) and atranorin (10). The structures of the new compounds were determined on the basis of spectroscopic evidence, including 1-D and 2-D NMR and ESI–MS techniques.
Acknowledgements
This study was supported by the National Natural Science Foundation of China (grant nos 21002027, 90713046 and 30925040), CAS Foundation (grant no. KSCX2-YW-R-179) and China 111 Project (B07023) and the Fundamental Research Funds for the Central Universities (WY1114026).