title: A-seco-oleane-type triterpene acids from Ligularia intermedia.
abstract: From the roots of Ligularia intermedia, two new naturally occurring 3,4-seco-oleanolic triterpene acids were isolated. Their structures were elucidated as A-homo-3a-oxa-olean-12-en-3-one-28-oic acid and 3,4-seco-olean-12-en-4-ol-3,28-dioic acid by spectroscopic methods and chemical transformations. In addition, six known compounds were also obtained from this plant.
authors.forename: B
authors.initials: B
authors.lastname: Ma
authors.forename: Y P
authors.initials: YP
authors.lastname: Shi
authors.forename: Z J
authors.initials: ZJ
authors.lastname: Jia