Viburnum luzonicum is widely distributed in China. Its branch extracts showed potential α-amylase and α-glucosidase inhibitory activities. In order to discover new bioactive constituents, five undescribed phenolic glycosides, viburozosides A−E (1–5), were obtained by bioassay-guided isolation coupled with HPLC-QTOF-MS/MS analysis. Their structures were elucidated by spectroscopic analyses, including
荚莲在中国广泛分布。其分支
提取物显示出潜在的
α-淀粉酶和α-
葡萄糖苷酶抑制活性。为了发现新的
生物活性成分,五种未描述的
酚糖苷,viburozosides A−E ( 1 – 5 ),通过
生物测定引导分离与 HPLC-QTOF-MS/MS 分析相结合获得。它们的结构通过光谱分析阐明,包括一维核磁共振、二维核磁共振、
ECD 和 ORD。测试了所有化合物的α -
淀粉酶和α -
葡萄糖苷酶抑制效力。化合物1显示出对α -
淀粉酶的显着竞争性抑制作用(IC 50=17.5 μM)和α-
葡萄糖苷酶(IC 50 =13.6 μM)。