Author(s)

Wen-Hu Cai, Katsuyoshi Matsunami, Hideaki Otsuka, Yoshio Takeda

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From the 1-BuOH-soluble fraction of a MeOH extract of the leaves of Symplocos cochinchinensis var. philippinensis, 12 compounds were isolated. Spectroscopic analyses of compounds 1 - 3 established their structures to be megastig-mane glycosides, named symplocosionosides A-C. The absolute structure of 1 was determined by the modified Mosher’s method. Compound 4 was found to be a neolignan glucoside and named symplocosneolignan. The structures of com-pounds 5 and 6, named symplocosins A and B, were elucidated to be the saponins of hederagenin sugar esters. The structures of the remaining known compounds (7 - 12) were identified by comparison of spectroscopic data with those reported in the literature.

Symplocos cochinchinensis var. Philippinensis, Symplocaceae, Megastigmane Glycoside, Neolignan Glucoside, Triterpene Glycosyl Ester, Modified Mosher’s Method

Cai, W. , Matsunami, K. , Otsuka, H. and Takeda, Y. (2011) Symplocosionosides A-C, Three Megastigmane Glycosides, a Neolignan Glucoside, and Symplocosins A and B, Two Triterpene Glycosyl Esters from the Leaves of Symplocos cochinchinensis var. Philippinensis. American Journal of Plant Sciences, 2, 609-618. doi: 10.4236/ajps.2011.24072.