1) isoquercitrin
异槲皮甙
1.
This enzyme is capable of hydrolyzing the α-rhamnoside of rutin to produce isoquercitrin.
该酶能水解芦丁的一个 α 鼠李糖基,从而制备异槲皮甙。
2.
Isoquercitrin was synthesized by the reaction of 5,7,3' ,4'-tetra-O-benzoylquercetin obtainecl from rutin with 1-bromo-2, 3,4,6-tetra-O-acetyl-D-glucopyranose, followed by hydrolysis with natrium hydroxide solution.
本文报道采用芦丁为原料,经两步反应合成重要中间体(3),后者与乙酰溴代葡萄糖反应,经NaOH溶液水解得异槲皮甙(6),合成异槲皮甙与天然异槲皮甙熔点、红外光谱、紫外光谱完全一致。
2) Quercitrin
[英]['kwə:sitrin] [美]['kwɝ,sɪtrɪn]
槲皮甙
1.
Conclusion:Quercitrin as a .
0 m L·min- 1 ;检测波长为2 60 nm,以槲皮甙为参照品。
3) Isoquercitrin
异槲皮甙,异槲皮素,罗布麻甲素
4) Quercetinglycosides
槲皮素糖甙
5) isoquercitrin
异槲皮苷
1.
Three flavonoids compounds: kaempferol *!, quercetin *", and isoquercitrin *# were isolated from the leaves of Cyclocarya paliurus (Batal.
采用溶剂萃取及多种色谱技术分离纯化 ,根据理化性质和光谱分析方法鉴定其结构 ,确定从青钱柳中分离得到山柰酚、槲皮素和异槲皮苷 3个黄酮单体化合物 ,并用反相高效液相色谱法对其含量进行了测定 ,测得各自在甲醇和水提取物中的含量 :山柰酚 0 。
2.
RESULTS Six compounds were isolated from Duchesnea indica Focke and identified as apigenin-6-C-β-D-glucopyranoside(1),acacetin-7-O-α-L-rhamnopyranosyl(1-6)-β-D-glucopyranoside(2),kaempferol-3O-β-D-galactopyranoside(3),rutin(4),isoquercitrin(5) and hyperin(6).
结果从蛇莓中分离得到6个黄酮类化合物,结构鉴定为洋芹素-6-C-β-D-葡萄糖苷(1),金合欢素-7-O-α-L-鼠李糖基(1-6)--βD-葡萄糖苷(2),山奈素-3-O-β-D-半乳糖苷(3),芦丁(4),异槲皮苷(5)和金丝桃苷(6)。
3.
A method for simultaneous determination of hyperosid,isoquercitrin and quercetin in Kendir Extracturm was developed,which using the high-performance liquid chromatography coupled with diode array detection.
采用HPLC法同时测定罗布麻浸膏粉中金丝桃苷、异槲皮苷、槲皮素的含量。
6) isoquercetin
异槲皮苷
1.
RESULTS Eleven compounds were obtained and identified as naringenin(1),naringenin-4′-O-β-pyranoglucose(2),isoquercetin(3),(+)catechin(4),(-)epicatechin(5),acetyl ursolic acid(6),glucose(7),ursolic acid(8),β-sitosterol(9),palmitic acid(10) and.
结果分离得到并鉴定了11个化合物,分别为柑桔素(naringenin,1)、柑桔素-4′-O-β-吡喃葡萄糖苷(naringenin-4′-O-β-pyranoglucose;choerospondin,2)、异槲皮苷(isoquercetin,3)、儿茶素[(+)catechin,4]、表儿茶素[(-)epicatechin,5)]、乙酰熊果酸(acetyeursolic acid,6)、葡萄糖(glucose,7)、熊果酸(ursolic acid,8)、β-谷甾醇(β-sitosterol,9)、棕榈酸(palmitic acid,10)和胡萝卜苷(daucosterol,11)。
2.
Objective:To determine the contents of rutin,and isoquercetin in mulberry leaves by HPLC.
目的:建立HPLC法测定桑叶中芦丁、异槲皮苷含量的定量分析方法。
3.
To select superior medicinal provenances of Cyclocarya paliurus,the geographic variation of flavonoid compounds (kaempferol,quercetin,and isoquercetin) in leaves of one-year-old seedlings of 11 provenances was studied.
结果表明:青钱柳叶中3种黄酮类化合物质量分数紧密相关,其中山奈酚质量分数高于槲皮素和异槲皮苷。
补充资料：槲皮甙
分子式：C21H20O11
分子量：448.38
CAS号：522-12-3
性质：
分子量：448.38
CAS号：522-12-3
性质：
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条