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CAS No.: | 25739-41-7 |
---|---|
Name: | velutin |
Article Data: | 11 |
Molecular Structure: | |
Formula: | C17H14 O6 |
Molecular Weight: | 314.295 |
Synonyms: | Flavone,4',5-dihydroxy-3',7-dimethoxy- (6CI,8CI); 3',7-Dimethoxy-4',5-dihydroxyflavone;3',7-Dimethylluteolin; 4',5-Dihydroxy-3',7-dimethoxyflavone;5,4'-Dihydroxy-7,3'-dimethoxyflavone; 7,3'-Di-O-methylluteoline; Chrysoeriol7-methyl ether; DR 9606128; Flavoyadorigenin B; Luteolin 3',7-dimethyl ether;Luteolin 7,3'-dimethyl ether; Velutin |
Density: | 1.402g/cm3 |
Melting Point: | 298 °C |
Boiling Point: | 567.5°C at 760 mmHg |
Flash Point: | 213.1°C |
PSA: | 89.13000 |
LogP: | 2.88840 |
velutin
Conditions | Yield |
---|---|
With palladium on activated charcoal; hydrogen In tetrahydrofuran; methanol at 20℃; for 12h; | 79% |
(-)-5-hydroxy-2-(4-hydroxy-3-methoxy-phenyl)-7-methoxy-chroman-4-one
velutin
Conditions | Yield |
---|---|
With iodine; potassium acetate; acetic acid |
7,4′-dihydroxy-5,3′-dimethoxyflavone
A
chrysoeriol
B
5,7-dihydroxy-3',4'-dimethoxy flavone
C
velutin
D
2-(3,4-dimethoxy-phenyl)-7-hydroxy-5-methoxy-chromen-4-one
E
2-(4-hydroxy-3-methoxyphenyl)-5,7-dimethoxy-4H-benzopyran-4-one
Conditions | Yield |
---|---|
at 300℃; for 0.0333333h; Mechanism; transmethylation reaction; | A n/a B 2.0 % Chromat. C 4.7 % Chromat. D n/a E 14.1 % Chromat. |
2-(3,4-Dihydroxy-phenyl)-5,7-dihydroxy-chromen-4-on
A
diosmetin
B
chrysoeriol
C
velutin
D
pilloin
Conditions | Yield |
---|---|
With O-methyl transferase from cell-free extract of Citrus mitis; <(14)CH3>-S-adenosyl-L-methionine; 2-hydroxyethanethiol In water; dimethyl sulfoxide at 35℃; for 0.5h; Product distribution; pH 7.5 buffer; |
2-(4-hydroxy-3-methoxyphenyl)-5,7-dimethoxy-4H-benzopyran-4-one
A
7,4′-dihydroxy-5,3′-dimethoxyflavone
B
velutin
C
5-hydroxy-3',4',7-trimethoxyflavone
D
2-(3,4-dimethoxyphenyl)-5,7-dimethoxy-4H-chromen-4-one
Conditions | Yield |
---|---|
at 300℃; for 0.0333333h; Mechanism; transmethylation reaction; | A 2.7 % Chromat. B 10.5 % Chromat. C 6.2 % Chromat. D 18.5 % Chromat. |
Conditions | Yield |
---|---|
With hydrogenchloride for 6h; Heating; |
Conditions | Yield |
---|---|
With hydrogenchloride In ethanol for 6h; Product distribution; Heating; study of the acid hydrolysis reaction; |
5,4'-dihydroxy-7,3'-dimethoxyflavone-4'-O-β-D-xylopyranosyl-(2a→1b)-2a-O-β-D-xylopyranosyl-(2b→1c)-2b-O-β-D-xylopyranosyl-2c-octadecanoate
A
D-xylose
B
velutin
C
stearic acid
Conditions | Yield |
---|---|
Stage #1: 5,4'-dihydroxy-7,3'-dimethoxyflavone-4'-O-β-D-xylopyranosyl-(2a→1b)-2a-O-β-D-xylopyranosyl-(2b→1c)-2b-O-β-D-xylopyranosyl-2c-octadecanoate With hydrogenchloride In ethanol; water at 70 - 80℃; Stage #2: With hydrogenchloride In ethanol; water |
5,4'-dihydroxy-7,3'-dimethoxyflavone-4'-O-β-D-xylopyranosyl-(2a→1b)-2a-O-β-D-xylopyranosyl-(2b→1c)-2b-O-β-D-xylopyranosyl-2c-octadecanoate
velutin
Conditions | Yield |
---|---|
With hydrogenchloride In ethanol; water at 70 - 80℃; for 0.5h; |
5,4'-dihydroxy-7,3'-dimethoxyflavone-4'-O-α-D-xylopyranosyl-(2a→1b)-2a-O-α-D-xylopyranosyl-(2b→1c)-2b-O-α-D-xylopyranosyl-(2c→1d)-2c-O-α-D-xylopyranosyl-2d-octadecanoate
A
D-xylose
B
velutin
C
stearic acid
Conditions | Yield |
---|---|
Stage #1: 5,4'-dihydroxy-7,3'-dimethoxyflavone-4'-O-α-D-xylopyranosyl-(2a→1b)-2a-O-α-D-xylopyranosyl-(2b→1c)-2b-O-α-D-xylopyranosyl-(2c→1d)-2c-O-α-D-xylopyranosyl-2d-octadecanoate With hydrogenchloride In ethanol; water at 70 - 80℃; Stage #2: With hydrogenchloride In ethanol; water |