Steroidal saponins and sapogenins from fenugreek and their inhibitory activity against α-glucosidase
作者:Huixing Zhang、Jing Xu、Meizhe Wang、Xiaoyan Xia、Rongke Dai、Yuqing Zhao
DOI:10.1016/j.steroids.2020.108690
日期:2020.9
(fenugreek) has been reported to be rich in saponins, especially the dioscin or diosgenin, which are natural anti-diabetic agents with relatively low toxicity. Thus, the present study was to purify the saponins and sapogenins from fenugreek and to evaluate their α-glucosidase inhibitory activity in vitro. As a result, 33 steroidal saponins and sapogenins were isolated, including six undescribed ones
据报道,胡芦巴的种子富含皂苷,尤其是薯蓣皂苷或薯蓣皂苷元,它们是毒性相对较低的天然抗糖尿病药物。因此,本研究旨在从胡芦巴中纯化皂苷和皂苷元,并在体外评估它们的α-葡萄糖苷酶抑制活性。结果,分离出 33 种甾体皂苷和皂苷元,包括 6 个未描述的和 27 个先前已知的分子。其中,化合物10、12、17、22和29为螺甾醇皂苷或皂苷元的5种25R和25S异构体混合物。化合物 1-6 的结构是通过 1D 和 2D NMR 光谱分析、高分辨率质谱和化学证据确定的。与阳性对照相比,皂苷元 26、27、14 和皂苷 18 和 23 在 IC50 值分别为 15.16、8.98、7.26、5.49 和 14.01 μM 时显着抑制 α-葡萄糖苷酶。这些结果支持胡芦巴以皂苷和皂苷元作为活性成分治疗糖尿病的治疗潜力。