Tellimagrandin II

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Tellimagrandin II
Chemical structure of tellimagrandin II
Chemical structure of tellimagrandin II
Names
Systematic IUPAC name
(11aR,13S,14R,15S,15aR)-2,3,4,5,6,7-Hexahydroxy-9,17-dioxo-9,11,11a,13,14,15,15a,17-octahydrodibenzo[g,i]pyrano[3,2-b][1,5]dioxacycloundecine-13,14,15-triyl tris(2,3,4-trihydroxybenzoate)
Other names
Tellimagrandin II
Eugeniin
Identifiers
3D model (JSmol)
ChEBI
ChEMBL
ChemSpider
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KEGG
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  • Key: JCGHAEBIBSEQAD-UUUCSUBKSA-N
  • InChI=1S/C41H30O26/c42-15-1-10(2-16(43)26(15)50)36(57)65-34-33-23(9-62-39(60)13-7-21(48)29(53)31(55)24(13)25-14(40(61)64-33)8-22(49)30(54)32(25)56)63-41(67-38(59)12-5-19(46)28(52)20(47)6-12)35(34)66-37(58)11-3-17(44)27(51)18(45)4-11/h1-8,23,33-35,41-56H,9H2/t23-,33-,34+,35-,41+/m1/s1
  • C1C2C(C(C(C(O2)OC(=O)C3=CC(=C(C(=C3)O)O)O)OC(=O)C4=CC(=C(C(=C4)O)O)O)OC(=O)C5=CC(=C(C(=C5)O)O)O)OC(=O)C6=CC(=C(C(=C6C7=C(C(=C(C=C7C(=O)O1)O)O)O)O)O)O
Properties
C41H30O26
Molar mass 938.66 g/mol
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Tellimagrandin II is the first of the ellagitannins formed from 1,2,3,4,6-pentagalloyl-glucose. It can be found in Geum japonicum and Syzygium aromaticum (clove).[1]

Tellimagrandin II is an isomer of punicafolin or nupharin A, but the hexahydroxydiphenoyl group is not attached to the same hydroxyl groups in the glucose molecule.

The compound shows anti-herpesvirus properties.[1]

Metabolism

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It is formed by oxidation of pentagalloyl glucose in Tellima grandiflora by the enzyme pentagalloylglucose: O(2) oxidoreductase, a laccase-type phenol oxidase.[2]

It is further oxidized to casuarictin, a molecule formed via oxidative dehydrogenation of 2 other galloyl groups in Casuarina and Stachyurus species.[3]

Dimerization

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It is laccase-catalyzed dimerized to cornusiin E in Tellima grandiflora.[4][5]

It has an extremely weak basic (essentially neutral) compound. The compound shows anti-herpesvirus properties.

References

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