1) isohemiphloin
异半皮桉苷
1.
Ten compounds were isolated from n-butanol extraction by silicagel column chromatography, reversed-phase silica gel and so on, and eleven structures were identified by physico-chemical properties and spectrum as genistein(3),benjaminamide (4),isohemiphloin (5), eriodictyol (6), hesperetin (7), glycyrrhizin (8),daidzein (9) and naringenin (12).
得到的结果和结论如下:(1)乙酸乙酯部位应用硅胶柱色谱及重结晶等方法,分离得到2个黄酮类化合物,其结构经理化和UV、NMR等波谱鉴定,为黄颜木素(1)和木犀草素(2);正丁醇部位通过多次硅胶、葡聚糖凝胶及反相硅胶柱色谱的分离纯化,得到10个化合物,经理化和UV、1HNMR、13C-NMR、MS等波谱鉴定了其中7个化合物的结构,分别为染料木素(3)、异半皮桉苷(5)、北美圣草素(6)、高北美圣草素(7)、甘草素(8)、大豆素(9)、柚皮素(12),其中化合物(1)、(2)、(3)、(5)、(7)和(9)均为首次从该植物中分离得到,另外3个化合物初步鉴定为生物碱、芳香醛类化合物及黄酮鼠李糖苷,结构还在鉴定中。
2) isopinelloside
异半夏苷
3) 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。
4) 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。
6) isoquercetin-6ˊ-o-acetate
乙酰异槲皮苷
补充资料：N2-异丁酰-2'-脱氧鸟苷
分子式：C14H19N5O5
分子量：337.33
CAS号：68892-42-2
性质：熔点>300°C。
分子量：337.33
CAS号：68892-42-2
性质：熔点>300°C。
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