Abstract

A novel diynoic acid, evectic acid (21-furan-heneicosa-5,7-diynoic acid), has been isolated from the roots of Polyathia evecta. Its structure was elucidated by spectroscopic methods. The 1H and 13C NMR spectra were assigned by combined application of COSY, HMQC, DEPT, HMBC and NOESY experiments.

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