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沙打旺(Astragalus Adsurgens Pall)是豆科黄芪属植物,我们对其化学成分和毒性成分进行了研究,从中分出2个新的四环三萜类化合物9和10.本文报道它们的分离鉴定工作。 1 新化合物的特征 化合物9:白色粉末,m.p.249～251℃,[a]_D~(20):—47.06°(C 0.34,CHCl_3),HRMS(M~+)m/z:486.3345,结合元素分析,分子式定为C_(30)H_(46)O_5.IR(cm~(-1))示有3367～3567(—OH),1724,1740(C—O,五元环);~1H NMR(δppm,CDCl_3,TMS),1.07～1.37处有7个—CH_3,0.44(1H,d,J=4.49 Hz),0.65(1H,d,J=4.48 Hz)AB型偶合系统和IR 3050cm~(-1),提示分
Astragalus Adsurgens Pall is a plant belonging to the genus Astragalus, and we studied its chemical constituents and toxic components and isolated two new tetracyclic terpenoids 9 and 10. We report their isolation and identification jobs. Characterization of novel compounds Compound 9: White powder, mp 249-251 ° C, [a] D 20: -47.06 ° C 0.34, CHCl 3 HRMS M ~ + m / z 486.3345, The molecular formula is C_ (30) H_ (46) O_5.IR (cm ~ (-1)) shows 3367-3567 (-OH), 1724,1740 (C-O, (δ ppm, CDCl 3, TMS), 7 -CH_3,0.44 (1H, d, J = 4.49 Hz) at 1.07 ~ 1.37, AB coupling system of 0.65 (1H, d, -1), suggesting points