异槲皮苷

异槲皮苷（英语：Isoquercetin或isoquercitrin、isotrifoliin^[1]，也称为异金丝桃苷、槲皮素-3-O-葡萄糖苷，Quercetin-3-O-glucoside）是一种天然的黄酮苷，分子式C₂₁H₂₀O₁₂，是槲皮素的3-O-葡萄糖苷，存在于芒果树（Mangifera indica）^[2]、塔黄（Rheum nobile）、番荔枝（Annona squamosa）^[3]、茶树（Camellia sinensis）^[4]等多种植物中。

Isoquercetin
IUPAC名 3-(β-D-Glucopyranosyloxy)-3′,4′,5,7-tetrahydroxyflavone
系统名 2-(3,4-Dihydroxyphenyl)-5,7-dihydroxy-3[(2S,3R,4S,5S,6R)-3,4,5-trihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy4H-1-benzopyran-4-one
别名	Isoquercitroside Isoquercitin Isoquercetin Trifoliin Isotrifolin Trifoliin A Isohyperoside Isotrifoliin Quercetin-3-glucoside Quercetin-3-O-glucoside Quercetin 3-O-β-D-glucopyranoside
识别
CAS号	482-35-9  Y
PubChem	5280804
ChemSpider	4444361
SMILES	C1=CC(=C(C=C1C2=C(C(=O)C3=C(C=C(C=C3O2)O)O)O[C@H]4[C@@H]([C@H]([C@@H]([C@H](O4)CO)O)O)O)O)O
InChI	1/C21H20O12/c22-6-13-15(27)17(29)18(30)21(32-13)33-20-16(28)14-11(26)4-8(23)5-12(14)31-19(20)7-1-2-9(24)10(25)3-7/h1-5,13,15,17-18,21-27,29-30H,6H2/t13-,15-,17+,18-,21+/m1/s1
InChIKey	OVSQVDMCBVZWGM-QSOFNFLRBX
KEGG	C05623
性质
化学式	C21H20O12
摩尔质量	464.38 g·mol−1
若非注明，所有数据均出自标准状态（25 ℃，100 kPa）下。

参考文献

1. Isoquercetin. PubChem. [2018-09-11]. （原始内容存档于2024-05-20）.
2. Singh UP, Singh DP, Singh M, et al. Characterization of phenolic compounds in some Indian mango cultivars. International Journal of Food Sciences and Nutrition. 2004, 55 (2): 163–9. PMID 14985189. doi:10.1080/09637480410001666441.
3. Panda S, Kar A. Antidiabetic and antioxidative effects of Annona squamosa leaves are possibly mediated through quercetin-3-O-glucoside. BioFactors. 2007, 31 (3-4): 201–210. PMID 18997283. doi:10.1002/biof.5520310307.
4. Sakakibara, H; Honda, Y; Nakagawa, S; Ashida, H; Kanazawa, K. Simultaneous determination of all polyphenols in vegetables, fruits, and teas. Journal of Agricultural and Food Chemistry. 2003, 51 (3): 571–81. PMID 12537425. doi:10.1021/jf020926l.