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New sesquiterpenoids from Petasites japonicus and Petasites tricholobus

Author:
Hai, Ping, Gao, Yuan, Xiao, Chun-Gui, Jiang, Xian-Jun, Li, Xiang-Mei, Yang, Wan-Qiu, Li, Rong-Tao, Wang, Fei
Source:
Phytochemistry letters 2018 v.23 pp. 41-45
ISSN:
1874-3900
Subject:
Petasites japonicus, nuclear magnetic resonance spectroscopy, sesquiterpenoids
Abstract:
Phytochemical investigation of the whole plants of Petasites japonicus and Petasites tricholobus led to the isolation of five new bakkenolide-type sesquiterpenoids, bakkenolide-Ib (1), bakkenolide-IIb (2), bakkenolide-IIIb (3), bakkenolide-IVb (4), and bakkenolide-Vb (5), and a new eremophilane-type norsesquiterpenoid, petasindiol (6). Their structures were elucidated by NMR and HRESIMS analyses. Petasindiol (6) represented the first example of 15-noreremophilane sesquiterpenoid from the genus Petasites.
Agid:
5862848