Names | |
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IUPAC name
[(2R,3R,4R)-Flavan-3,3′,4′,5,7-pentol]-(4→8)-[(2R,3S)-flavan-3,3′,4′,5,7-pentol] | |
Systematic IUPAC name
(2R,2′R,3R,3′S,4R)-2,2′-Bis(3,4-dihydroxyphenyl)-3,3′,4,4′-tetrahydro-2H,2′H-[4,8′-bi-1-benzopyran]-3,3′,5,5′,7,7′-hexol | |
Other names
Procyanidin B1 | |
Identifiers | |
3D model (JSmol) |
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ChEBI | |
ChEMBL | |
ChemSpider | |
PubChem CID |
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UNII | |
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Properties | |
C30H26O12 | |
Molar mass | 578.52 g/mol |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). |
Procyanidin B1[1] is a procyanidin dimer.
It is a molecule with a 4→8 bond (epicatechin-(4β→8)-catechin).[2] Proanthocyanidin-B1 can be found in Cinnamomum verum (Ceylon cinnamon, in the rind, bark or cortex), in Uncaria guianensis (cat's claw, in the root), and in Vitis vinifera (common grape vine, in the leaf)[3] or in peach.[4]
Procyanidin B1 can be converted into procyanidin A1 by radical oxidation using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals under neutral conditions.[5]
Types of procyanidins
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A-type proanthocyanidins |
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B type proanthocyanidins |
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Types |
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