Studies on chemical constituents of Lethariella cladonioides

Object To develop and utilize a folk-medicine of Yunnan Province, Lethariella cladonioides (Nyl.) Krog. Methods The constituents were extracted with 80% ethanol and isolated with silica gel column chromatography. The structures were identified by physicochemical properties and spectral analysis. Results Two unknown constituents were elucidated from the extract as 3-aldehyde-6-methyl-2, 4-dihydroxy-ethyl-benzoate (Ⅰ), and 4-methyl-2, 6-dihydroxy-benzaldehyde (Ⅱ). Conclusion They are both new constituents obtained firstly.