Isoquercitrine

Fig. 1 Chromatography of flavonoids. 1. Extract. Solidaginis 2. Rutin — chlorogenic acid — isoquercitrin — quercitrin 3. Extract. Hyperici 4. Hyp>erosid — quercetin-3-arabinosid — hypericin — quercetin 5. Extract. Betulae...

The following fiRf values were obtained quercetin 90 — 95, hypericin 75 — 80, quercitrin 60 — 65, quercetin-3-arabinoside 55 — 60, isoquercitrin 45 — 50, hyperoside 40—45, chlorogenic acid 30 — 35, rutin 20—25 (Fig. 1). 

Isonicotinic acid hydrazide reagent 318 Isoprenaiine 395,396 Isoprenoid compounds 44 Isopulegol 59 Isoquercitrin 279, 280, 323 Isoquinoline alkaloids 46, 66, 262 Isorhamnetin 323 Isothiazolones, microbiocidal 45 Isothiocyanates 75 Isotopes, j8-radiation-emitting 41 -, detection limits 41 Itaconic acid 61... 

Phenolic acid A = ferulic acid phenolic acid B = caffeic acid flavonoid A = isoquercitrin flavonoid B = hyperoside phenolic acid E = chlorogenic acid flavonoid C = rutin. 

Compounds 1 = 4-hydroxycoumarin 2 = umbelliferon 3 = 4-methyl-esculetin 4 = isopimpinellin 5 = esculin 6 = flavone 7 = a-naphtoflavone 8 = kaempferol 9 = quercetin 10 = isoquercitrin 11 = robinetin 12 = robinin 13 = myricetin 14 = luteolin 7-O-glucoside 15 = rutin 16 = hes-peretin 17 = hespiridin 18 = naringin 19 = pelargonin chloride 20 = polargonin chloride 21 = malvin chloride. 

Fig. 2.49. Profile of Hypericum perforatum extract with the H LC-MS attributions of the components detected. 1 = chlorogenic acid isomer 2 = 3-0- -coumaroylquinic acid 3 = chlorogenic acid 4 = rutin 5 = hyperoside 6 = isoquercitrin 7 = 3,3, , , 7-pentahydroxyflavanone 7-0-rhamnopyranoside 8 = quercitrin 9 = quercetin 10 = 13,118 tapigenin 11 = pSeudohypericin 12 = hypericin 13 = hyperforin analogue 14 = hyperform dialogue 15 = hyperforin 16 = adhyperforin. Reprinted with permission from M. Brolis eta. [ ].

Fig. 2.50. Profiles of calendula (a), milk-thistle (b) and passion flower (c) tinctures (each 60 per cent v/v, ethanol) with the HPLC-MS attributions of the components detected, lc = quercetin-3-O-ruti-nosylrhamnoside 2c = rutin 3c = isorhamnetin-3-O-ruti-nosylrhamnoside 4c = isoquercitrin 5c = isorhamnetin-3-O-gluco-sylglucoside 6c = narcissin 7c = isorhamnetin-3-O-glucoside lm = taxifolin 2m = siliydianin 3m = silychristin 4m = oxy derivative of silybin/isosilybin isomers 5m and 6m = 2,3-dehydro derivatives of silybin/isosilybin isomers 7m = silybin 8m = isosilybin lp = 6,8-diC-glucosylapigenin 2p = isoschaftoside 3p = shaftoside 4p = homoorientin 5p = isovetexin-2"-0-glucoside 6p = vitexin. Reprinted with permission from A. R. Biha et al. [150].

Semenova, N. I., V. V. Chenikov. E. N. Shopovalov, and A. D. Zelenskaya. Effect of isoquercitrin on the taste indexes of tobacco. Ezv Vyssh Uchebn Zaved Pishch Tekhnol 1974 1974(5) 167-168. 

Cornard, J.-P. and Merlin, J.-C., Complexes of aluminium(III) with isoquercitrin spectroscopic characterization and quantum chemical calculations. Polyhedron, 21, 2801, 2002. 

Flavonoids Leaves, stalk, buds Quercetin, hyperoside, quercitrin, isoquercitrin, 13, 118 biapigenin... 

Apocynum venetum L. Luo Bu Ma (leaf, root) Cymarin, strophantidin, k-strophanthin-P, isoquercitrin, quercetin.33 Increase myocardial contractility, lower blood pressure, increase bronchial secretion, diuretic. 

Celosia argentea L. C. margariacea L. Cao Jue Ming (Quail grass) (stem, leaf) Guijaverin, hyperoside, quercitin, isoquercitrin.50 Insecticidal. 

Cucumis sativus L. Huang Gua (Cucumber) (leaf, fruit, seed) Arginine, caffeic acid, chlorogenic acid, cucurbitacins, fructose, galactose, isoquercitrin, mannose, 2,6-nonadienol, rutin, linoleic acid, oleic acid, palmitic acid, stearic acid, sterol.50351 Diuretic, purgative, vermifuge, pulp can be used for bums, scalds, and skin ailments. 

Cyrtomium falcatum (L. f.) Preset. Quan Yuan Guan Zhong (root) Flavonoid, cyrtomin, astragalin, isoquercitrin.57 Treat cold, fever, dizziness due to high blood pressure, insomnia. 

Hibiscus mutabilis L. Fu Rong Yie (Cotton rose) (leaf, flower) Isoquercitrin, hyperoside, rutin, quercetin-4-glucoside, quercetin, quercimeritrin.50 Applied to swellings, bums, ulcers. Internally lung ailments, cough, dysuria, menorrhagia. 

Houttynia cordata Thunb. Yu Xing Cao (Fishwort) (aerial part) Essential oil, houttuynium, decanoylacetaldehyde, quercitrin, isoquercitrin.33 Antibacterial, antiviral, analgesic, hemostatic, antitussive. 

Hypericum attenuatum Choisy H. ascyron L. //. japonicum Thunb. //. perforatum L. sumpsonii Hance Jin Si Tao or Di Er Cao Guan Ye Lean Qiao Tian Bao Cao (St. John s wort) (whole plant) Quercetin, quercitrin, isoquercitrin, sarolactone, hypericin, usigtoercin, protohypericin, kaempferol.33,53,265,450 Antipyretic, antibacterial, detoxicant, treat acute icteric hepatitis, lower blood pressure, dysmenorrhea, gonorrhea, skin ailments. 

Inula britannica L. I. japonica Thunb. I. linariaefolia Turcz. I. linariaefolia Turcz. f. simplex Kom. I. salsoloides (Turcz.) Ostenfeld Xuan Fu Hua (Elecampane) (aerial part, including flower head) Inusterol A, taraxasterol, inusterol B, inulicin, flavone, caffeic acid, chlorogenic acid, isoquercitrin, quercetin, taraxasteryl palmitate, bigelovin, dihydrobigelovin.48-50 260 Discutient, vulnerary, antiemetic, carminative, diuretic, deobstruent, treat ascites, bronchitis, cancer, chest congestion. 

Loropetalum chinense (R. Br.) D. Oliver Ji Mu (Strap flower) (plant) Flavone, quercitrin, isoquercitrin.33 Antipyretic, a detoxicant, hemostatic, treat angina pectoris, bronchitis, bleeding, alimentary indigestion. 

Melaleuca leucadendra L. Bai Qian Ceng (Cajeput) (leaf) Cajuputol, cineole, eucalyptol, lignin, melaleucin, pinene, terpinol, 1-limonene, dipentene, nerolidiol, sesquiterpenes, azulene, sesquiterpene alcohols, valeraldehyde, benzaldehyde, betulinic acid, oleanolic acid, ursolic acid, quercimeritrin, isoquercitrin, gallic acid.50 Treat dropsy, oil is for gout, inhaled to treat colds, rhinitis, embrocation against rheumatism. It is an anodyne, antispetic. 

Saururus chinensis (Lour.) Baillon San Bai Cao (Lizard s tail) (whole plant) Quercitrin, isoquercitrin, avicularin, hyperin, amino acids.55 To clean abscesses, antimalarial, diuretic, depurative, eliminative, parasiticide. 

Hypericum perforatum L. China Quercetin, quercitrin, isoquercitrin.33-53 Antipyretic, antibacterial, detoxicant effect, treat acute icteric hepatitis, lower blood pressure, dysmenorrhea, gonorrhea, skin ailments. 

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