Phenolic Constituents from Tsoongiodendron odorum Chun

Eleven phenolic constituents were isolated from the 80% ethanol extract of the twigs of Tsoongiodendron odorum Chun.On the basis of spectroscopic methods,their structures were identified as p-hydroxybenzaldehyde(1),vanillin(2),1,3,5-trimethoxybenzene(3),4-hydroxy-3, 5-dimethoxy-benzaldehyde(4),vanillic acid(5),threo-2,3-bis-(4-hydroxy-3-methoxyphenyl)-3methoxy-propanol(6),erythro-2,3-bis-(4-hydroxy-3-methoxyphenyl)-3-methoxy-propanol(7),syringic acid(8), 3-hydroxy-1-(4-hydroxy-3,5-dimethoxyphenyl)-1-propanone(9),p-hydroxyl phenethanol(10),and C-veratroylglycol(11).Compounds 1-4 and 6-11 were isolated from this plant for the first time.