Angustifolinoid A, a macrocyclic flavonoid glycoside from Elaeagnus angustifolia flowers

作者：Chen, Xiaoyu; Liu, Yushuang; Chen, Guangying; Gong, Chi; Li, Shengge; Hua, Huiming; Yuan, Tao^*

来源：Tetrahedron Letters, 2018, 59(26): 2610-2613.

DOI：10.1016/j.tetlet.2018.05.074

• Angustifolinoid
• Flavonoid glycoside
• Elaeagnus angustifolia
• Oxidative coupling
• Cyclooxygenase

A novel macrocyclic flavonoid glycoside, angustifolinoid A (1), featuring an unprecedented 13-membered heterocyclic ring moiety, along with a known flavonoid glycoside, tiliroside (2), were isolated from Elaeagnus angustifolia flowers. Their structures were determined by extensive spectroscopic analysis and electronic circular dichroism (ECD) calculation. Biosynthesis analysis indicated that compound 1 might be derived from compound 2 via a key enzymatic intramolecular oxidative coupling. Compounds 1 and 2 showed inhibitory activities against cyclooxygenases, COX-1 and COX-2.

• 出版日期2018-6-27
• 单位中国科学院大学; 中国科学院新疆理化技术研究所; 海南师范大学; 沈阳药科大学