Vanicosides A and B, Protein Kinase C Inhibitors from Polygonum pensylvanicum
- 1 February 1994
- journal article
- Published by American Chemical Society (ACS) in Journal of Natural Products
- Vol. 57 (2) , 236-242
- https://doi.org/10.1021/np50104a007
Abstract
Two new protein kinase C inhibitory glycosides, vanicosides A [1] and B [2] were isolated from Polygonum pensylvanicum (Polygonaceae) by chromatographic techniques guided by bioassays for PKC inhibition. The structures of these glycosides were established primarily by analysis of 1H- and homonuclear correlated nmr and high-resolution fab mass spectra of 1 and 2 and the derived octaacetate, 3. Both glycosides were found to have p-coumaryl esters at the 1, 3, and 6 carbons of sucrose and a feruloyl ester at the 6' carbon. Vanicoside A [1] also had an acetate group at the 2' carbon.Keywords
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