Abstract:
Fourteen constituents(Ⅴ
1~Ⅴ
14) were isolated from
Veratrum stenophyllum Diels. Eight of them were identified as
β-sitosterol (Ⅴ
1), lignoceric acid (Ⅴ
2), daucosterol(Ⅴ
5), veratroylzygadenine(Ⅴ
7), etioline(Ⅴ
8), angeloylzygadenine(Ⅴ
9), zygadenine(Ⅴ
11) and jervine(Ⅴ
13). Stenophylline B(Ⅴ
6) is a new compound. The weak alkaloidal fraction and Ⅴ
7 were shown to have significant activity in lowering blood pressure and heart rate in anesthetic cats and dogs.Studies in the structure of stenophylline B (Ⅴ
6) is reported in this paper.