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Brosimacutin G

CAS# 350221-50-0

Brosimacutin G

2D Structure

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3D structure

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Brosimacutin G

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Chemical Properties of Brosimacutin G

Cas No. 350221-50-0 SDF Download SDF
PubChem ID 11325738 Appearance Yellow powder
Formula C20H20O6 M.Wt 356.4
Type of Compound Chalcones Storage Desiccate at -20°C
Solubility Soluble in Chloroform,Dichloromethane,Ethyl Acetate,DMSO,Acetone,etc.
Chemical Name (E)-1-[(2S,3S)-3,4-dihydroxy-2-(2-hydroxypropan-2-yl)-2,3-dihydro-1-benzofuran-5-yl]-3-(4-hydroxyphenyl)prop-2-en-1-one
SMILES CC(C)(C1C(C2=C(O1)C=CC(=C2O)C(=O)C=CC3=CC=C(C=C3)O)O)O
Standard InChIKey KJPLNWFZFTXFPY-FQMXMGHCSA-N
Standard InChI InChI=1S/C20H20O6/c1-20(2,25)19-18(24)16-15(26-19)10-8-13(17(16)23)14(22)9-5-11-3-6-12(21)7-4-11/h3-10,18-19,21,23-25H,1-2H3/b9-5+/t18-,19-/m0/s1
General tips For obtaining a higher solubility , please warm the tube at 37 ℃ and shake it in the ultrasonic bath for a while.Stock solution can be stored below -20℃ for several months.
We recommend that you prepare and use the solution on the same day. However, if the test schedule requires, the stock solutions can be prepared in advance, and the stock solution must be sealed and stored below -20℃. In general, the stock solution can be kept for several months.
Before use, we recommend that you leave the vial at room temperature for at least an hour before opening it.
About Packaging 1. The packaging of the product may be reversed during transportation, cause the high purity compounds to adhere to the neck or cap of the vial.Take the vail out of its packaging and shake gently until the compounds fall to the bottom of the vial.
2. For liquid products, please centrifuge at 500xg to gather the liquid to the bottom of the vial.
3. Try to avoid loss or contamination during the experiment.
Shipping Condition Packaging according to customer requirements(5mg, 10mg, 20mg and more). Ship via FedEx, DHL, UPS, EMS or other couriers with RT, or blue ice upon request.

Source of Brosimacutin G

The seeds of Psoralea corylifolia L.

Protocol of Brosimacutin G

Structure Identification
J Org Chem. 2005 Mar 4;70(5):1761-70.

Synthesis of 2,3-dihydro-3-hydroxy-2-hydroxylalkylbenzofurans from epoxy aldehydes. One-step syntheses of brosimacutin G, vaginidiol, vaginol, smyrindiol, xanthoarnol, and Avicenol A. Biomimetic syntheses of angelicin and psoralen.[Pubmed: 15730299]


METHODS AND RESULTS:
We have developed two practical one-step syntheses of 2,3-dihydro-3-hydroxy-2-hydroxyalkylbenzofurans from readily available optically pure alpha,beta-epoxy aldehydes. Electron-deficient resorcinols react with epoxy aldehydes using either Cs2CO3 in DMF or KOH/CaCl2 in MeOH to give adducts 13, 16, 18, 20, 21, and Brosimacutin G (6t). Grignard reagents prepared by low-temperature halogen-metal exchange of acetoxy iodocoumarins 35d and 40 and acetoxy bromonaphthalene 41 add to epoxy aldehyde (S)-26 to complete the first syntheses of vaginidiol (7c), vaginol (7t), smyrindiol (8c), xanthoarnol (8t), and avicenol A (9t).
CONCLUSIONS:
Acid-catalyzed fragmentation of vaginidiol or vaginol provides angelicin, while that of smyrindiol or xanthoarnol affords psoralen. In both cases, the trans isomers fragment only twice as fast as the cis isomers, possibly through the intermediacy of a common benzylic cation. This may have implications for the biosynthesis of angelicin and psoralen.

J Nat Prod. 2002 Dec;65(12):1843-7.

Brosimacutins A-I, nine new flavonoids from Brosimum acutifolium.[Pubmed: 12502325 ]


METHODS AND RESULTS:
Nine new flavonoids, brosimacutins A, Brosimacutin B, Brosimacutin C, Brosimacutin D, Brosimacutin E, Brosimacutin F, Brosimacutin G, Brosimacutin H, Brosimacutin I (1-9), and four known flavonoids were isolated from the bark of Brosimum acutifolium, a Brazilian folk medicine ("Mururé").Their structures were elucidated by spectroscopic methods, including 2D NMR.
CONCLUSIONS:
Brosimacutins A-I possess differentially functionalized isoprene units at C-8.

Brosimacutin G Dilution Calculator

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Preparing Stock Solutions of Brosimacutin G

1 mg 5 mg 10 mg 20 mg 25 mg
1 mM 2.8058 mL 14.0292 mL 28.0584 mL 56.1167 mL 70.1459 mL
5 mM 0.5612 mL 2.8058 mL 5.6117 mL 11.2233 mL 14.0292 mL
10 mM 0.2806 mL 1.4029 mL 2.8058 mL 5.6117 mL 7.0146 mL
50 mM 0.0561 mL 0.2806 mL 0.5612 mL 1.1223 mL 1.4029 mL
100 mM 0.0281 mL 0.1403 mL 0.2806 mL 0.5612 mL 0.7015 mL
* Note: If you are in the process of experiment, it's necessary to make the dilution ratios of the samples. The dilution data above is only for reference. Normally, it's can get a better solubility within lower of Concentrations.

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References on Brosimacutin G

Brosimacutins A-I, nine new flavonoids from Brosimum acutifolium.[Pubmed:12502325]

J Nat Prod. 2002 Dec;65(12):1843-7.

Nine new flavonoids, brosimacutins A-I (1-9), and four known flavonoids were isolated from the bark of Brosimum acutifolium, a Brazilian folk medicine ("Murure"). Their structures were elucidated by spectroscopic methods, including 2D NMR. Brosimacutins A-I possess differentially functionalized isoprene units at C-8.

Synthesis of 2,3-dihydro-3-hydroxy-2-hydroxylalkylbenzofurans from epoxy aldehydes. One-step syntheses of brosimacutin G, vaginidiol, vaginol, smyrindiol, xanthoarnol, and Avicenol A. Biomimetic syntheses of angelicin and psoralen.[Pubmed:15730299]

J Org Chem. 2005 Mar 4;70(5):1761-70.

We have developed two practical one-step syntheses of 2,3-dihydro-3-hydroxy-2-hydroxyalkylbenzofurans from readily available optically pure alpha,beta-epoxy aldehydes. Electron-deficient resorcinols react with epoxy aldehydes using either Cs2CO3 in DMF or KOH/CaCl2 in MeOH to give adducts 13, 16, 18, 20, 21, and Brosimacutin G (6t). Grignard reagents prepared by low-temperature halogen-metal exchange of acetoxy iodocoumarins 35d and 40 and acetoxy bromonaphthalene 41 add to epoxy aldehyde (S)-26 to complete the first syntheses of vaginidiol (7c), vaginol (7t), smyrindiol (8c), xanthoarnol (8t), and avicenol A (9t). Acid-catalyzed fragmentation of vaginidiol or vaginol provides angelicin, while that of smyrindiol or xanthoarnol affords psoralen. In both cases, the trans isomers fragment only twice as fast as the cis isomers, possibly through the intermediacy of a common benzylic cation. This may have implications for the biosynthesis of angelicin and psoralen.

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