Complete ¹H and ¹³C assignments of 8‐C‐β‐D‐[2‐O‐(E)‐p‐coumaroyl]glucopyranosyl‐2‐(2‐hydroxy)propyl‐7‐methoxy‐5‐methylchromone

Abstract

1H and 13C NMR spectra of 8-C-beta-D-[2-O-(E)-p-coumaroyl] glucopyranosyl-2-(2-hydroxy)propyl-7-methoxy-5-methylchromone were completely assigned by 2D NMR observations. Especially the 1H assignments of the glucosyl and hydroxyl protons were achieved by utilizing HMQC, HMBC, 1H-1H COSY and DEPT techniques together with a heavy water exchange 1H NMR experiment.