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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

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DOI: 10.4236/ajps.2011.24072    4,735 Downloads   8,547 Views   Citations

ABSTRACT

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.

Conflicts of Interest

The authors declare no conflicts of interest.

Cite this paper

W. Cai, K. Matsunami, H. Otsuka and Y. Takeda, "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, Vol. 2 No. 4, 2011, pp. 609-618. doi: 10.4236/ajps.2011.24072.

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