Abstract: Eleven compounds were isolated from the 95% ethanol extract of the whole plants of Gaultheria yunnanensis, which were identified to be kaempferol 3-O-?-L-rhamnopyranoside (1), guaijaverin (2), gaultheroside A (3), quercitrin (4), (?)-5′-methoxyisolariciresinol 9-O-?-D-xylopyranoside (5), schizandriside (6), (?)-epicatechin (7), isoquercitrin (8), cinchonain Ia (9), ursolic acid (10), and 2,5-bis(1-phenylethyl)phenol (11). Among them, 1, 2, 9 and 11 were firstly obtained from the plant, and 2 was reported as natural compound at the first time.

Key words: Gaultheria yunnanensis, Ericaceae, chemical constituents