PHENOLIC GLUCOSIDES AND LIGNANS FROM EHRETIA-OVALIFOLIA

Four new constituents comprising two 2-methoxyhydroquinone glucosides, a sesquilignan and a neolignan were isolated from the bark of Ehretia ovalifolia, together with four known lignans. The structures of the n ew compounds were elucidated by chemical and spectral methods as ranos yl]-4-O-[(6-syringoyl]-beta-D-glucopyranosyl- 2-methoxyhydroquinone, 1 ,4-bis. lloyl)-beta-D-glucopyranosyl-2-methoxyhydroqunone, guaiacylgly cerol-larisiresinol ether and l]-phenyl}-3-(4-hydroxy-3-methoxyphenyl- propanol).