Diarylheptanoids from the root bark of Juglans cathayensis

A new diarylheptanoid glucoside, (8R,9R)-17-methoxy-2-oxatricyclo[13.2.2.1(3,7)]icosa-1(17),3(20),4,6, 15,18-hexaene-4,9,10-trio1-9-O-beta-D-glucopyranoside (1), namely jugcathayenoside, together with two known diarylheptanoids, (+)-galeon (2) and 4-hydroxy-17-methoxy-2-oxatricyclo[13.2.2.1(3,7)]icosa-1(17),3(20),4,6,15,18-hexaene-9-one (3), were isolated from the root bark of Juglans cathayensis. Their structures were elucidated on the basis of extensive spectroscopic data analysis. (C) 2013 Han-Li Ruan. Published by Elsevier B.V. on behalf of Chinese Chemical Society. All rights reserved.