title: Isolation and Structure Elucidation of Seco-neokadsuranic Acid A and 3,4-Seco-(24Z)-lanosta-4(30),8,24-triene-3,26-dioic Acid1.
abstract: Seco-neokadsuranic acid A, the second natural triterpenoid with the unusual 14(13-->12) ABEO-lanostane skeleton was isolated from KADSURA HETEROCLITA together with 3,4-seco-(24 Z)-lanosta-4(30),8,24,triene-3,26-dioic acid. The present paper deals with the isolation and structure elucidation of these two new compounds and the preparation of two new 7-oxo-lanostane triterpenoid derivatives.
authors.affiliation: Institute of Materia Medica, Chinese Academy of Medical Sciences, 1 Xian Nong Tan Street, Beijing 100050, Peoples' Republic of China.
authors.forename: L
authors.initials: L
authors.lastname: Lian-Niang
authors.forename: X
authors.initials: X
authors.lastname: Hong
authors.forename: G
authors.initials: G
authors.lastname: Da-Lun
authors.forename: K
authors.initials: K
authors.lastname: Kangouri
authors.forename: T
authors.initials: T
authors.lastname: Miyoshi
authors.forename: S
authors.initials: S
authors.lastname: Omura