title: Triterpenoid Acids from Kadsura longipedunculata. Neokadsuranic Acids B and C: Two Novel Triterpenoids with 14 (13 --> 12)abeo-Lanostane Skeletons.
abstract: Six triterpenoid acids were isolated from the stems of KADSURA LONGIPEDUNCULATA, collected in Kuangxi province. Four of them were new compounds and assigned as (24 Z)-3-oxo-12alpha-acetoxylanosta-8,24-dien-26-oic acid ( 1), (24 Z)-3-oxo-12alpha-hydroxylanosta-8,24-dien-26-oic acid ( 2), (24 Z)-3-oxo-14(13-->12) ABEO-lanosta-8,13(18),24-trien-26-oic acid ( 3), and (24 Z)-3-oxo-13beta-hydroxy-14(13-->12) ABEO-lanosta-8,24-dien-26-oic acid ( 4). Compounds 3 and 4 were named neokadsuranic acids B and C, respectively.
authors.affiliation: Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing 100050, People's Republic of China.
authors.forename: L
authors.initials: L
authors.lastname: Lian-Niang
authors.forename: X
authors.initials: X
authors.lastname: Hong
authors.forename: K
authors.initials: K
authors.lastname: Kangouri
authors.forename: A
authors.initials: A
authors.lastname: Ikeda
authors.forename: S
authors.initials: S
authors.lastname: Omura