Three undescribed hydroxycinnamic acid amide dimers 1-3 were isolated and identified from an extract of Goji berry. Their molecular structures were elucidated based on NMR, MS, and IR spectra analysis. Compounds 1-3 were hydroxycinnamic acid amide dimers, which possess a cyclic butane moiety formed by head-to-head connection. These compounds at 25 μM showed the disaggregation potency on the copper-mediated Aβ 1-42 aggregation ranging from 27.3 � 3.2 to 31.0 � 2.9 %. This study provides new information on the antiaging traditional usage of goji berry.

A new coumarin, 7-oxo-7 H-furo-[3,2-g]chromen-9-yl dimethylcarbamate, is isolated from a methanol extract of Zanthoxylum bungeanum pericarps. The structure of this compound 1 is elucidated based on extensive spectroscopic analysis, including infrared, nuclear magnetic resonance, and mass spectrometry. This new compound is also synthesized by a simple acylation reaction with dimethylcarbamoyl chloride. The inhibitory activity of the isolated compound against HeLa and HepG2 cell lines is described. The protein tyrosine phosphatase 1B inhibitory activity against HeLa and HepG2 cancer cells and the sirtuin 1 inhibitory activity against HepG2 cancer cells are also evaluated.