Absolute Configuration of (6S,9S)-Roseoside from Polygonum hydropiper

Abstract

From Polygonum hydropiper L., a C₁₃-norisoprenoid glucoside was isolated and its absolute configuration was established to be (6S,9S)-roseoside (1) by spectroscopic evidence and X-ray crystallographic analysis of its acetate derivative (2). In addition, the stereostructure of roseoside from Canthium subcordatum was revised to the (6S,9S) configuration.

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