山楂叶化学成分研究

目的　研究山楂(CrataeguspinnatifidaBge .varmajorN .E .Br.)叶中的化学成分。方法　用大孔树脂柱色谱、硅胶柱色谱和聚酰胺柱色谱等技术进行分离纯化,根据理化性质和光谱数据进行结构鉴定。结果　得到8个化合物,分别为山楂素I(1) ,槲皮素(2 ) ,3-O-β-D-吡喃葡糖槲皮素(3) ,3-O-β-D-吡喃半乳糖槲皮素(4) ,3-O-β-D-吡喃葡糖(6→1)-α-L-鼠李糖槲皮素(5 ) ,3-O-β-D-吡喃半乳糖(6→1)-α-L-鼠李糖槲皮素(6 ) ,山萘酚(7) ,7-O-α-L-鼠李糖-3-O-β-D-葡糖山萘酚(8)。结论　1为新化合物,8为首次从该属中分得

CHAMICAL CONSTITUENTS FROM THE LEAVES OF CRATAEGUS PINNATIFIDA BGE. VAR. MAJOR N.E.Br.

AIM: To study the chemical constituents in the leaves of Crataegus pinnatifida Bge. var. major N.E.Br.. METHODS: Compounds were isolated by using porous resin, silica gel, polyamide chromatographic techniques etc. Their structures were elucidated by chemical and spectroscopic methods. RESULTS: Eight compounds were identified as pinnatifin I (1), quercetin (2), 3-O-beta-D-glucopyranosyl quercetin (3), 3-O-beta-D-galacopyranosyl quercetin (4), 3-O-beta-D-glucopyranosyl (6-->1)-alpha-L-rhamnosyl quercetin (5), 3-O-beta-D-galacopyranosyl (6-->1)-alpha-L-rhamnosyl quercetin (6), kaempferol (7), 7-O-alpha-L-rhamnosyl-3-O-beta-D- glucopyranosyl kaempferol (8). CONCLUSION: Compound 1 is a new compound. Compound 8 was isolated from this plant for the first time.