目的研究了番荔枝科暗罗属植物景洪暗罗Polyalthia cheliensis树叶的化学成分.方法通过液-液分配、大孔吸附树脂脱色、硅胶柱色谱......

Chemical investigation of Erigeron annus afforded two new eudesmenes, which were identified as 1 β, 5α-dihydroxyeudesm......

从盘花垂头菊全草分离出10个化合物.经IR.'H NMR.13C NMR.DEPT,FABMS.EIMs等光谱方法分别鉴定为:1 β,8-二当归酰氧基-2β-乙......