藏药短管兔耳草挥发性化学成分的研究

STUDIES ON CHEMICAL CONSTITUENT OF ESSENTIAL OIL FROM LAGOTIS BREVITUBA

采用毛细管气相色谱 质谱联用技术对藏药短管兔耳草挥发性化学成分进行了研究 ,经毛细管色谱分离出 6 2个峰 ,共确定了其中 41种化学成分 ,所鉴定的化合物含量占全挥发油的 77 32 %;用气相色谱面积归一化法测定了各化学成分的相对含量 ,其主要化学成分为 :二苯胺 (16 4 7%)、邻苯二甲酸丁基 8 甲基壬基酯 (6 4 2 %)、二十六碳烷 (4 76 %)、十六烷酸 (3 6 6 %)、二十四碳烷 (3 4 0 %)、邻苯二甲酸二丁酯 (3 38%)、二十二碳烷 (3 30 %)、二十碳烷 (3 2 6 %)、十六烷酸乙酯 (2 77%)、十八碳烷(2 76 %)、戊酸 (2 4 8%)、3 乙基环辛烯 (2 0 5 %)等。

The essential oil Lagotis brevituba was analyzed by capillary GC-MS method 62 peaks were isolated,and 41 compounds from them was identified.The relative content of the constituents were determined by GC with area normalizing method.The identification ratio was 77.32%.The main chemical components of the essential oil are diphenyl amine(16.47%),1,2-benzenedicarboxylic acid butyl 8-methylnonyl ester(6.42%),hexacosane(4.76%),n-hexadecanoic acid(3.66%),tetracosane(3.40%),dibutyl phthalate(3.38%),docosane(3.30%),eicosane(3.26%),hexadecanoic acid ethyl ester(2.77%),octadecane(2.76%),pentanoic acid(2.48%),3-ethenyl-cyclooctene(2.05%),etc.