A novel antimicrobial flavonoidic glycoside from the leaves of Alstonia macrophylla Wall ex A. DC (Apocynaceae)
作者:Mehtab Parveen、Zakia Khanam、Akhtar Ali、Syed Mohmud Ahmad
DOI:10.1016/j.cclet.2009.11.022
日期:2010.5
A new flavonoidic glycoside, tricin-4′-O-β-l-arabinoside (1) was isolated from the leaves of Alstonia macrophylla along with two known flavonoids, vitexin and myricetin-3′-rhamnoside-3-O-galactoside. Their structures were established by chemical and spectral evidences. The known compounds were reported for the first time from this plant. Moreover compound 1 was tested for antifungal and antibacterial
从大叶黄杨的叶中分离出一种新的类黄酮糖苷,tricin-4'- O -β-1-阿拉伯糖苷(1)以及两种已知的类黄酮,黄荆素和杨梅素-3'-鼠李糖苷-3- O-半乳糖苷。它们的结构是根据化学和光谱证据确定的。该植物首次报道了已知化合物。此外,测试了化合物1的抗真菌和抗菌活性。