Magn Reson Chem. 2011 Apr;49(4):184-9. doi: 10.1002/mrc.2726. Epub 2011 Mar 9.
Phytochemical investigation of dichloromethane (DCM) extract from the stems of Paragonia pyramidata var. pyramidata L. Rich. (Bur.) resulted in the isolation and characterization of two new triterpenoids 3β,19β-dihydroxylup-12, 20(29)-diene-28-oic acid (1) and 3β,19β-dihydroxylup-12-en-28-oic acid (2), three known triterpenoids lupeol (3), spinosic acid A (4) and oleanolic acid (5), together with four known steroids (20R)-22E-24-ethylcholesta-4,22-dien-3-one (6), (20R)-24-ethylcholest-4-en-3-one (7), stigmasterol (8) and β-sitosterol (9). HREIMS, GC-MS and NMR experiments including HSQC, HMBC, COSY and NOESY were used for the determination of the structures and NMR spectral assignments. This is the first report about the chemical constituents for this plant.
从 Paragonia pyramidata var. pyramidata L. Rich.（Bur.）的茎部的二氯甲烷（DCM）提取物中进行植物化学研究，分离并鉴定了两种新的三萜类化合物 3β,19β-二羟基羽扇豆-12,20(29)-二烯-28-酸（1）和 3β,19β-二羟基羽扇豆-12-烯-28-酸（2），三个已知的三萜类化合物羽扇醇（3）、刺囊酸 A（4）和齐墩果酸（5），以及四个已知的甾体化合物（20R）-22E-24-乙基胆甾-4,22-二烯-3-酮（6）、（20R）-24-乙基胆甾-4-烯-3-酮（7）、豆甾醇（8）和β-谷甾醇（9）。高分辨质谱、GC-MS 和 NMR 实验（包括 HSQC、HMBC、COSY 和 NOESY）用于确定结构和 NMR 谱分配。这是关于该植物化学成分的首次报道。
