Procyanidin A2

Procyanidin A2
	Chemical structure of proanthocyanidin A2Chemical structure of proanthocyanidin A2
Names
	IUPAC name (2R,3R,8S,14R,15R)-2,8-bis(3,4-dihydroxyphenyl)-2,3,4,14-tetrahydro-8,14-methanobenzo[7,8][1,3]dioxocino[4,5-h]chromene-3,5,11,13,15-pentaol
	Other names Dimeric catechin; Procyanidin A2; Procyanidol A2; Proanthocyanidin A-2; Procyanidin dimer A2; (+)-Proanthocyanidin A2; Epicatechin-(2β→7,4β→8)-epicatechin
Identifiers
CAS Number	41743-41-3 check;
3D model (JSmol)	Interactive image;
ChEBI	CHEBI:28472 check;
ChemSpider	110541;
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E number	Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value).
PubChem CID	124025;
UNII	UQN6668Q4R check;
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	InChI InChI=1S/C30H24O12/c31-13-7-20(37)24-22(8-13)41-30(12-2-4-16(33)19(36)6-12)29(39)26(24)25-23(42-30)10-17(34)14-9-21(38)27(40-28(14)25)11-1-3-15(32)18(35)5-11/h1-8,10,21,26-27,29,31-39H,9H2/t21-,26-,27-,29-,30+/m1/s1 Key: NSEWTSAADLNHNH-LSBOWGMISA-N; InChI=1/C30H24O12/c31-13-7-20(37)24-22(8-13)41-30(12-2-4-16(33)19(36)6-12)29(39)26(24)25-23(42-30)10-17(34)14-9-21(38)27(40-28(14)25)11-1-3-15(32)18(35)5-11/h1-8,10,21,26-27,29,31-39H,9H2/t21-,26-,27-,29-,30+/m1/s1 Key: NSEWTSAADLNHNH-LSBOWGMIBO;
	SMILES C1[C@H]([C@H](OC2=C3[C@@H]4[C@H]([C@@](OC5=CC(=CC(=C45)O)O)(OC3=CC(=C21)O)C6=CC(=C(C=C6)O)O)O)C7=CC(=C(C=C7)O)O)O;
Properties
Chemical formula	C30H24O12
Molar mass	576.510 g·mol−1
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ☒ verify (what is check☒ ?) Infobox references

Procyanidin A2 is an A type proanthocyanidin.

It is found in avocado,^[1] chestnut,^[2]^[3] cranberry juice concentrate,^[4] lychee fruit pericarp,^[5] peanut^[4] skins,^[6] Cinchona cortex, cinnamon cortex, Urvillea ulmaceae,^[7] and Ecdysanthera utilis.^[8]

Synthesis

Procyanidin B2 can be converted into procyanidin A2 by radical oxidation using 1,1-diphenyl-2-picrylhydrazyl (DPPH) radicals under neutral conditions.^[9]

References

^ Proanthocyanidin-A-2 on liberherbarum.com
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^ Sarni-Manchado P, Le Roux E, Le Guerneve C, Lozano Y, Cheynier V. Phenolic composition of litchi fruit pericarp" J Agric Food Chem 2000;48(12):5995-6002.
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[1] Proanthocyanidin-A-2 on liberherbarum.com

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[5] Sarni-Manchado P, Le Roux E, Le Guerneve C, Lozano Y, Cheynier V. Phenolic composition of litchi fruit pericarp" J Agric Food Chem 2000;48(12):5995-6002.

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v t e Types of procyanidins
A-type proanthocyanidins	Dimers : Procyanidin A1 A2 Trimers:Cinnamtannin B1 Tetramers: Arecatannin A2
B type proanthocyanidins	Dimers : Procyanidin B1 B2 B3 B4 B5 B6 B8 D (ent-Epicatechin(4α→8)catechin) Trimers: Arecatannin B1 (epicatechin-(4β→8)-epicatechin-(4β→6)-catechin) Procyanidin C1 (epicatechin-(4β→8)-epicatechin-(4β→8)-epicatechin) Procyanidin C2 (catechin-(4α→8)-catechin-(4α→8)-catechin) Tetramers : Cinnamtannin A2
Types	Arecatannins Arecatannin A1 Arecatannin A3 Arecatannin B2 Arecatannin C1

Names
Chemical structure of proanthocyanidin A2 Chemical structure of proanthocyanidin A2
IUPAC name (2R,3R,8S,14R,15R)-2,8-bis(3,4-dihydroxyphenyl)-2,3,4,14-tetrahydro-8,14-methanobenzo[7,8][1,3]dioxocino[4,5-h]chromene-3,5,11,13,15-pentaol
Other names Dimeric catechin Procyanidin A2 Procyanidol A2 Proanthocyanidin A-2 Procyanidin dimer A2 (+)-Proanthocyanidin A2 Epicatechin-(2β→7,4β→8)-epicatechin
Identifiers
CAS Number	41743-41-3^checkY
3D model (JSmol)	Interactive image
ChEBI	CHEBI:28472^checkY
ChemSpider	110541
ECHA InfoCard	Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value). Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value).Lua error in Module:EditAtWikidata at line 29: attempt to index field 'wikibase' (a nil value).
E number	Lua error in Module:Wikidata at line 880: attempt to index field 'wikibase' (a nil value).
PubChem CID	124025
UNII	UQN6668Q4R^checkY
CompTox Dashboard (EPA)	{{#property:P3117}}Lua error in Module:EditAtWikidata at line 29: attempt to index field 'wikibase' (a nil value).
InChI InChI=1S/C30H24O12/c31-13-7-20(37)24-22(8-13)41-30(12-2-4-16(33)19(36)6-12)29(39)26(24)25-23(42-30)10-17(34)14-9-21(38)27(40-28(14)25)11-1-3-15(32)18(35)5-11/h1-8,10,21,26-27,29,31-39H,9H2/t21-,26-,27-,29-,30+/m1/s1 Key: NSEWTSAADLNHNH-LSBOWGMISA-N InChI=1/C30H24O12/c31-13-7-20(37)24-22(8-13)41-30(12-2-4-16(33)19(36)6-12)29(39)26(24)25-23(42-30)10-17(34)14-9-21(38)27(40-28(14)25)11-1-3-15(32)18(35)5-11/h1-8,10,21,26-27,29,31-39H,9H2/t21-,26-,27-,29-,30+/m1/s1 Key: NSEWTSAADLNHNH-LSBOWGMIBO
SMILES C1[C@H]([C@H](OC2=C3[C@@H]4[C@H]([C@@](OC5=CC(=CC(=C45)O)O)(OC3=CC(=C21)O)C6=CC(=C(C=C6)O)O)O)C7=CC(=C(C=C7)O)O)O
Properties
Chemical formula	C₃₀H₂₄O₁₂
Molar mass	576.510 g·mol⁻¹
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). ☒N verify (what is ^checkY☒N ?) Infobox references

Procyanidin A2

Synthesis

References

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