作者:Yan-Ni Shi、Lian Yang、Jin-Hua Zhao、Yi-Ming Shi、Yan Qu、Hong-Tao Zhu、Dong Wang、Chong-Ren Yang、Xing-Cong Li、Min Xu、Ying-Jun Zhang
DOI:10.1080/14786419.2014.998217
日期:2015.7.18
Fifteen known compounds including four triterpenoids (1-4), one sterol (5), one diketopiperazine alkaloid (6) and nine phenolics (7-15) were isolated from the stems of Piper wallichii. Their structures were elucidated by means of spectroscopic analysis, and acidic hydrolysis in case of the 2-oxo-3,19,23-trihydroxyurs-12-en-28-oic acid -D-glucopyranosyl ester (1). The structure of compound 1 was fully assigned by 1D and 2D NMR experiments for the first time. All isolates were tested for their antibacterial, antifungal, anti-inflammatory and antiplatelet aggregation bioactivities.