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CAS No.: | 546-97-4 |
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Name: | Columbin |
Article Data: | 2 |
Molecular Structure: | |
Formula: | C20H22O6 |
Molecular Weight: | 358.391 |
Synonyms: | 1,4-Etheno-3H,7H-benzo[1,2-c:3,4-c‘]dipyran-3,7-dione, 9-(3-furanyl)-1,4,4a,5,6,6a,9,10,10a,10b-decahydro-4-hydroxy-4a,10a-dimethyl-, [1R-(1α,4β,4aα,6aβ,9β,10aα,10b)]-; |
Density: | 1.36g/cm3 |
Melting Point: | 190-191oC |
Boiling Point: | 565.9°Cat760mmHg |
Flash Point: | 296°C |
PSA: | 85.97000 |
LogP: | 2.53270 |
columbin glucoside
columbin
Conditions | Yield |
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With AcONa buffer; acetic acid at 36.5℃; for 720h; hesperidinase; | 11.5 mg |
Conditions | Yield |
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With hydrogenchloride In 1,4-dioxane; water at 80℃; for 3h; | A 1.2 mg B 0.5 mg |
acetic anhydride
columbin
(12S)-4-acetoxy-15,16-epoxy-1β,12-dihydroxy-5,9-dimethyl-17,18-dinor-9βH,10α-labda-2,13(16),14-triene-19,20-dioic acid-19=>1;20=>12-dilactone
Conditions | Yield |
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With sodium acetate |
dimethyl sulfate
columbin
(12S)-15,16-epoxy-1β,12-dihydroxy-4-methoxy-5,9-dimethyl-17,18-dinor-9βH,10α-labda-2,13(16),14-triene-19,20-dioic acid-19=>1;20=>12-dilactone
Conditions | Yield |
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With sodium hydroxide |
columbin
Dihydrocolumbin
Conditions | Yield |
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With palladium on activated charcoal; Lindlar's catalyst; ethyl acetate Hydrogenation; | |
With palladium on activated charcoal; acetone Hydrogenation; |
Conditions | Yield |
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With sodium hydroxide |
Conditions | Yield |
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With sodium acetate for 0.5h; Heating; | 81 mg |
Conditions | Yield |
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With sodium acetate for 5h; Heating; | 76 mg |
columbin
(12S)-15,16-epoxy-1β,12-dihydroxy-4-methoxy-5,9-dimethyl-17,18-dinor-9βH,10α-labda-2,13(16),14-triene-19,20-dioic acid-19=>1;20=>12-dilactone
Conditions | Yield |
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Multi-step reaction with 2 steps 1: aq.-ethanolic NaOH-solution 2: aq.-ethanolic NaOH-solution View Scheme |
columbin
Conditions | Yield |
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Multi-step reaction with 2 steps 1: palladium/calcium carbonate; ethyl acetate / Hydrogenation 2: aq.-ethanolic NaOH-solution View Scheme |