Abstract
Two new α-tetralonyl glucosides, (4S)-4,5,8-trihydroxy-α-tetralone-5-O-β-D-glucopyranosyl(1 → 6)-β-D-glucopyranoside (1: ) and (4S)-4,8-dihydroxy-α-tetralone-4-O-β-D-glucopyranosyl(1 → 6)-β-D-glucopyranoside (2: ), together with eight known compounds (3: - 10: ) were isolated from the green walnut husks of Juglans mandshurica. The structural characterization of all compounds was performed by spectroscopic analyses, including 1D and 2D NMR and HR-ESI-MS experiments. The isolated compounds were assayed for their cytotoxicity against two human cancer cell lines, A549 and HeLa. Four compounds (7: - 10: ) exhibited inhibitory effects against two human cancer cell lines with GI50 values between 1.3 and 5.8 µM.
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