Qiu Yingkun, Chen Yingjie, Pei Yupin, Matsuda Hisashi, Yoshikawa Masayuki
Shenyang Pharmaceutical University, China.
Chem Pharm Bull (Tokyo). 2002 Nov;50(11):1507-10. doi: 10.1248/cpb.50.1507.
The aqueous ethanolic extract from the fresh stems of Opuntia dillenii HAW. showed potent radical scanvenging activity. Three new compounds, opuntioside I, 4-ethoxyl-6-hydroxymethyl-alpha-pyrone, and kaempferol 7-O-beta-D-glucopyranosyl-(1-->4)-beta-D-glucopyranoside, were isolated from the extract. The structures of the new compounds were determined on the basis of chemical and physicochemical evidence and the radical scavenging effects of principal constituents were examined.
仙人掌新鲜茎的乙醇水提取物显示出强大的自由基清除活性。从该提取物中分离出三种新化合物，仙人掌苷I、4-乙氧基-6-羟甲基-α-吡喃酮和山奈酚7-O-β-D-吡喃葡萄糖基-(1→4)-β-D-吡喃葡萄糖苷。根据化学和物理化学证据确定了新化合物的结构，并研究了主要成分的自由基清除作用。
