美洲和欧洲白杨的叶和茎作为治疗前列腺疾病药物。其抗炎有效成分是水杨甙及其衍生物。为了寻找新的有效成分,作者从水提物中分离鉴定了黄酮类化合物,这些成分存在于叶中,而在茎中未发现。从颤杨(Populus tremuloides)叶的水提物中用制备型HPLC分离了5种新的黄酮醇葡萄糖醛酸甙,从UV、NMR、FAB-MS数据和水解产物鉴定为槲皮素 The leaves and stems of poplars in America and Europe are used as drugs for the treatment of prostate diseases. Its anti-inflammatory active ingredient is salicin and its derivatives. To search for new active ingredients, the authors isolated and identified flavonoids from aqueous extracts. These constituents are found in leaves and not found in stems. Five new flavonol glucuronide were isolated from aqueous extracts of Populus tremuloides leaves by preparative HPLC and identified as quercetin from UV, NMR, FAB-MS data and hydrolysates.