NATURAL PRODUCT RESEARCH AND DEVELOPMENT ›› 2019, Vol. 31 ›› Issue (5): 827-832.doi: 10.16333/j.1001-6880.2019.5.014

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Chemical constituents from Pilea aquarum subsp. brevicornuta

ZHOU Peng-jun1,YANG Guo-xun2,ZHANG Meng-tian2,TU Jiao2,WEN Bao-ying2,DING Jie1*,HU Jin-feng2*   

  1. 1School of Chemical Engineering,Sichuan University of Science & Engineering,Zigong 643000,China; 2Department of Natural Products Chemistry,School of Pharmacy,Fudan University,Shanghai 201203,China
  • Online:2019-05-24 Published:2019-05-24

Abstract: The study was focus on the chemical constituents of Pilea aquarum subsp. brevicornuta and seven compounds were obtained.Their structures were identified as pilearbornol (1),rubiarbonone D (2),camarolide (3),epi-oleanolic acid (4),oleanonic acid (5),5,8-epidioxy-(3β,5α,8α,22E)-ergosta-6,9(11),22-trien-3-ol (6) and eudesmin (7),respectively,by spectroscopic methods.Among them,compounds 1 and 2 belong to arborane-type triterpenoids and compound 1 is new.In addition,the absolute configuration of compound 2 was determined by X-ray crystal diffraction.All isolates were discovered from this plant for the first time and this is the first time to report arborane triterpenoids from Urticaceae family.

Key words: Pilea aquarum subsp. brevicornuta, arborane, triterpenoids, absolute configuration

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