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Ombuin Names IUPAC name 3,3′,5-Trihydroxy-4′,7-dimethoxyflavone
Systematic IUPAC name 3,5-Dihydroxy-2-(3-hydroxy-4-methoxyphenyl)-7-methoxy-4H -1-benzopyran-4-one
Other names4′,7-Dimethylquercetin 7,4′-Di-O -methylquercetin 4′,7-Dimethoxy-3,3′,5-trihydroxyflavone
Identifiers ChEBI ChemSpider UNII InChI=1S/C17H14O7/c1-22-9-6-11(19)14-13(7-9)24-17(16(21)15(14)20)8-3-4-12(23-2)10(18)5-8/h3-7,18-19,21H,1-2H3
N Key: BWORNNDZQGOKBY-UHFFFAOYSA-N
N InChI=1/C17H14O7/c1-22-9-6-11(19)14-13(7-9)24-17(16(21)15(14)20)8-3-4-12(23-2)10(18)5-8/h3-7,18-19,21H,1-2H3
Key: BWORNNDZQGOKBY-UHFFFAOYAW
COC1=C(C=C(C=C1)C2=C(C(=O)C3=C(C=C(C=C3O2)OC)O)O)O
Properties C17 H14 O7 Molar mass 330.29 g/mol Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
Chemical compound
Ombuin is an O-methylated flavonol , a type of flavonoid. It is the 4',7-O-methyl derivative of quercetin .
Ombuin can be found in species of the genus Erythroxylum . It can also be synthesized.[1] Ombuin 3-sulfate can be isolated from Flaveria chlorifolia .[2]
Glycosides Ombuin-3-rutinoside can be isolated from Phytolacca dioica , the ombu tree.[3] Ombuin-3-O-rhamnosylglucoside can be found in Erythroxylum rufum .[4] Other glycosides (ombuosides) :
Ombuin 3-galactoside (C23 H24 O12 , CAS number 69168-13-4) Ombuin 3-glucoside (C23 H24 O12 , CAS number 158642-42-3) References
Flavonols and their conjugates
Backbone
Flavonols
Aglycones Conjugates
Glycosides of herbacetin Glycosides of kaempferol Afzelin (Kaempferol 3-rhamnoside)Astragalin (kaempferol 3-O-glucoside)Kaempferitrin (kaempferol 3,7-dirhamnoside)Juglanin (Kaempferol 3-O-arabinoside)Kaempferol 3-alpha-L-arabinopyranoside Kaempferol 3-alpha-D-arabinopyranoside Kaempferol 7-alpha-L-arabinoside Kaempferol 7-O-glucoside Kaempferol 3-lathyroside Kaempferol 4'-rhamnoside Kaempferol 5-rhamnoside Kaempferol 7-rhamnoside Kaempferol 7-O-alpha-L-rhamnofuranoside Kaempferol 3-xyloside Kaempferol 7-xyloside Robinin (kaempferol-3-O-robinoside-7-O-rhamnoside)Kaempferol 3-O-rutinoside Sophoraflavonoloside (Kaempferol 3-O-sophoroside) Trifolin (Kaempferol 3-O-beta-D-galactoside)Glycosides of myricetin Conjugates of quercetin
O -Methylated flavonols
Aglycones Glycosides
of isorhamnetin Narcissin (Isorhamnetin 3-O-rutinoside) Isorhamnetin 3-O-glucoside Tamarixetin 7-rutinoside other Azalein (Azaleatin 3-O-α-L-rhamnoside)Centaurein (Centaureidin 7-O-glucoside) Eupalin (Eupalitin 3-0-rhamnoside)Eupatolin (Eupatolitin 3-O-rhamnoside)Jacein (Jaceidin 7-O-glucoside) Patulitrin (Patuletin 7-O-glucoside Xanthorhamnin (Rhamnetin glycoside)
Derivative flavonols
Aglycones Noricaritin Dihydronoricaritin Glycosides
Pyranoflavonols
Furanoflavonols
Semisynthetic