Triterpenoid Acids from Kadsura longipedunculata. Neokadsuranic Acids B and C: Two Novel Triterpenoids with 14 (13 --> 12)abeo-Lanostane Skeletons.
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.
Lian-Niang
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Institute of Materia Medica, Chinese Academy of Medical Sciences, Beijing 100050, People's Republic of China.
Hong
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Kangouri
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Ikeda
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Omura
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