摘要
从丽江乌头根中分离、鉴定了三个二萜生物碱成分,其中碱Ⅰ、碱Ⅱ分别为已知成分阿克诺辛(aconosine)和嘟拉碱(dolaconine);碱Ⅲ为一新的C_(18)-型二萜生物碱,从MS、IR、~1H NMR、^(13)C NMR等光谱数据推定了其结构,并命名为丽日碱甲(liconosine A)。
Three C18-ditcrpcnoid alkaloids were isolated from Aconitum forre-stii Stapf collected in Lijiang area, Yunnan province, at the altitute of 3200 m, two known alkaloids, aconosine( 1 ), dolaconitine( 2 ), and one new alkaloid, lico-nosine A ( 3 ) , whose structures were determined based on spectroscopic evidence. It is interesting to note that liconosine A (3) , whose structure feature is dcalkyled and with N=C double bond, appears to be unique in the C18-diterpenoid alkaloids. More than interesting is that the chemical components of this plant is different according to its growing altitute. The once studied Aconitum forrestii Stapf collected in Lijiang area, Yunnan province, at the altitute of 3500 rn, contained thirteen C19-ditcrpenoid alkaloids, which indicates that difference in plant growing altitute leads to different chemical typer. Since C19-ditcrpenoid alkaloids are more evolved than C18-type, the above result will possibly be significant for chemical ecology.
出处
《云南植物研究》
CSCD
1989年第3期267-270,共4页
Acta Botanica Yunnanica
关键词
丽江乌头
二萜生物碱
Aconitum
A. forrestii
Diterpenoid alkaloid, Liconosine A
