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25739-41-7

Basic Information
CAS No.: 25739-41-7
Name: velutin
Article Data: 11
Molecular Structure:
Molecular Structure of 25739-41-7 (velutin)
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
Synthetic route

5-(benzyloxy)-2-(4-(benzyloxy)-3-methoxyphenyl)-7-methoxy-4H-chromen-4-one

25739-41-7

velutin

Conditions
ConditionsYield
With palladium on activated charcoal; hydrogen In tetrahydrofuran; methanol at 20℃; for 12h;79%
41877-53-6, 54352-60-2, 66568-98-7

(-)-5-hydroxy-2-(4-hydroxy-3-methoxy-phenyl)-7-methoxy-chroman-4-one

25739-41-7

velutin

Conditions
ConditionsYield
With iodine; potassium acetate; acetic acid
62346-14-9

7,4′-dihydroxy-5,3′-dimethoxyflavone

A

491-71-4

chrysoeriol

B

4712-12-3

5,7-dihydroxy-3',4'-dimethoxy flavone

C

25739-41-7

velutin

D

10544-05-5

2-(3,4-dimethoxy-phenyl)-7-hydroxy-5-methoxy-chromen-4-one

E

1239-68-5

2-(4-hydroxy-3-methoxyphenyl)-5,7-dimethoxy-4H-benzopyran-4-one

Conditions
ConditionsYield
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.
491-70-3

2-(3,4-Dihydroxy-phenyl)-5,7-dihydroxy-chromen-4-on

A

520-34-3

diosmetin

B

491-71-4

chrysoeriol

C

25739-41-7

velutin

D

32174-62-2

pilloin

Conditions
ConditionsYield
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;
1239-68-5

2-(4-hydroxy-3-methoxyphenyl)-5,7-dimethoxy-4H-benzopyran-4-one

A

62346-14-9

7,4′-dihydroxy-5,3′-dimethoxyflavone

B

25739-41-7

velutin

C

29080-58-8

5-hydroxy-3',4',7-trimethoxyflavone

D

855-97-0

2-(3,4-dimethoxyphenyl)-5,7-dimethoxy-4H-chromen-4-one

Conditions
ConditionsYield
at 300℃; for 0.0333333h; Mechanism; transmethylation reaction;A 2.7 % Chromat.
B 10.5 % Chromat.
C 6.2 % Chromat.
D 18.5 % Chromat.

4'-hydroxy-7,3'-dimethoxyflavone-5-O-β-D(+)glucopyranoside

A

50-99-7

D-glucose

B

25739-41-7

velutin

Conditions
ConditionsYield
With hydrogenchloride for 6h; Heating;

2-(4-Hydroxy-3-methoxy-phenyl)-7-methoxy-5-((2R,3S,4S,5S,6R)-3,4,5-trihydroxy-6-methyl-tetrahydro-pyran-2-yloxy)-chromen-4-one

A

28161-49-1

6-deoxy-α-D-mannopyranose

B

25739-41-7

velutin

Conditions
ConditionsYield
With hydrogenchloride In ethanol for 6h; Product distribution; Heating; study of the acid hydrolysis reaction;
1449692-19-6

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

58-86-6

D-xylose

B

25739-41-7

velutin

C

57-11-4

stearic acid

Conditions
ConditionsYield
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
1449692-19-6

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

25739-41-7

velutin

Conditions
ConditionsYield
With hydrogenchloride In ethanol; water at 70 - 80℃; for 0.5h;
1449692-20-9

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

58-86-6

D-xylose

B

25739-41-7

velutin

C

57-11-4

stearic acid

Conditions
ConditionsYield
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
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