Micranoic acids A and B: two new octanortriterpenoids from Schisandra micrantha.
Two novel octanortriterpenoids, micranoic acids A (1) and B (2), along with three known compounds, kadsuric acid (3), 3beta-hydroxy-lanost-9(11),24(25)-dien-26-oic acid (4) and schizandronic acid (5), were isolated from the leaves and stems of Schisandra micrantha. The structures of 1 and 2 were determined by 1D and 2D NMR spectroscopic analysis. Micranoic acids A and B represent a new group of triterpenes in which the entire C-17 side chain has lost. This is the first report of octanortriterpenoids isolated from the family Schisandraceae.
Li
Rong-Tao
RT
State Key Laboratory of Phytochemistry and Plant Resources in West China, Kunming Institute of Botany, Chinese Academy of Sciences, PR China.
Han
Quan-Bin
QB
Zhao
Ai-Hua
AH
Sun
Han-Dong
HD
D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification; D018515:Plant Leaves; D018547:Plant Stems; D032141:Schisandra; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification*
D004365:Drugs, Chinese Herbal; D014315:Triterpenes