Chen Lin, Kang Wenyi
Institute of Natural Products, Pharmaceutical College, Henan University, Kaifeng 475004, China.
Zhongguo Zhong Yao Za Zhi. 2009 Nov;34(21):2758-60.
To study the chemical constituents from Aeschynanthus longicaullis.
The column chromatographic techniques were applied to isolate the constituents. The spectroscopie methods were used of EI-MS and NMR to identify the structures of the separated compounds.
Seven compounds were isolated from the ethyl acetate extract of A. longicaullis, whose structures were elucidated as cryptomeridiol (1), 4 (15) -eudesmene-1beta, 6alpha-diol (2), 2,5-bornanediol (3), isovanillic acid (4), vanillic acid (5), stigmast-5 (6) , 22 (23)-diene-3beta-ol (6) and beta-sitosterol (7).
Compounds 1-5 were isolated for the first time from Gesneriaceae and 6-7 were isolated for the first time from this plant.
研究长茎芒毛苣苔的化学成分。
采用柱色谱技术分离化合物。利用电子轰击质谱（EI-MS）和核磁共振（NMR）光谱方法鉴定分离得到的化合物结构。
从长茎芒毛苣苔的乙酸乙酯提取物中分离出7个化合物，其结构经鉴定分别为柳杉二醇（1）、4（15）-桉叶二烯-1β，6α-二醇（2）、2,5-冰片二醇（3）、异香草酸（4）、香草酸（5）、豆甾-5（6），22（23）-二烯-3β-醇（6）和β-谷甾醇（7）。
化合物1-5首次从苦苣苔科植物中分离得到，化合物6-7首次从该植物中分离得到。
