title: A novel 3-arylcoumarin and three new 2-arylbenzofurans from Mucuna birdwoodiana.
abstract: A novel coumarin (1, mucodianin A), three new 2-arylbenzofurans (2-4, mucodianins B-D) along with four known ones were isolated from the vine stems of Mucuna birdwoodiana. Their structures were elucidated on basis of spectral analysis. This is the first report of 7-quinonylcoumarin (1) as stable form in natural products.
authors.affiliation: Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education & Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
authors.forename: Ting
authors.initials: T
authors.lastname: Gong
authors.forename: Dong-Xiao
authors.initials: DX
authors.lastname: Wang
authors.forename: Yan
authors.initials: Y
authors.lastname: Yang
authors.forename: Ping
authors.initials: P
authors.lastname: Liu
authors.forename: Ruo-Yun
authors.initials: RY
authors.lastname: Chen
authors.forename: De-Quan
authors.initials: DQ
authors.lastname: Yu
mesh_terms: D001572:Benzofurans / Q000032:analysis* / Q000302:isolation & purification; D003374:Coumarins / Q000032:analysis* / Q000302:isolation & purification; D015394:Molecular Structure; D031299:Mucuna / Q000737:chemistry*; D018547:Plant Stems / Q000737:chemistry
chemical_list: D001572:Benzofurans; D003374:Coumarins; C030123:coumarin; C105430:benzofuran