元宝枫种仁70%乙醇提取物的化学成分分析

目的:对新资源食品元宝枫种仁中的化学成分进行研究。方法:采用硅胶、聚酰胺、凝胶(Sephadex LH-20)柱色谱及重结晶等技术进行分离纯化,综合运用质谱和波谱学方法鉴定化合物结构。结果:从元宝枫种仁70%乙醇溶液提取物中分离鉴定了12种化合物,分别为二氢去氢二愈创木基醇-4'-O-β-D-葡萄糖苷(1)、1,2,3,6-四没食子酰基-O-β-D-吡喃葡萄糖(2)、1,2,3,4,6-五没食子酰基-O-β-D-吡喃葡萄糖(3)、槲皮素(4)、山柰酚-3-O-α-L-吡喃鼠李糖苷(5)、槲皮素-3-O-α-L-吡喃鼠李糖苷(6)、槲皮素-3-O-β-D-吡喃半乳糖苷(7)、槲皮素-3-O-α-L-吡喃阿拉伯糖苷(8)、阿夫儿茶素(9)、儿茶素(10)、表儿茶素(11)、胡萝卜苷(12)。结论:经Sci Finder检索发现,化合物1~12均为首次从元宝枫种仁中分离得到,其中化合物1、2、9~11为首次从槭树属植物中分离得到。

Chemical Constituents of 70% EtOH Extract from the Kernel of Acer truncatum Bunge

Objective: To study the functional components from the kernel of Acer truncatum Bunge as a new food resource. Methods: The chemical constituents were isolated and purified by sequential chromatographies on silica gel, polyamide and Sephadex LH-20 columns and recrystallization. Electrospray ionization mass spectrometry (ESI-MS), 1H-NMR and 13C-NMR spectroscopic analysis were employed for the structural elucidation. Results: A total of twelve compounds were obtained and they were chemically identified as (7S,8R)-urolignoside (1), 1,2,3,6-tetra-O-galloyl-β-D-pyranglucose (2), 1,2,3,4,6-penta-O-galloyl-β-D-pyranglucose (3), quercetin (4), kaempferol-3-O-α-L-rhamnopyranoside (5), quercetin-3-O-α-L-rhamnopyranoside (6), quercetin-3-O-β-D-galactopyranoside (7), quercetin-3-O-α-L-arabinopyranoside (8), (+)-afzelechin (9), (+)-catechin (10), (-)-epicatechin (11), and daucosterol (12). Conclusions: All these compounds were identified for the first time in the kernel of this plant, while compounds 1, 2, and 9-11 were obtained for the first time from the genus Acer.