Tellimagrandin II
Encyclopedia
Tellimagrandin II is the first of the ellagitannin
s formed from 1,2,3,4,6-pentagalloyl-glucose. It can be found in Geum japonicum
and Syzygium aromaticum (clove). The compound shows anti-herpesvirus properties.
It is laccase
-catalyzed dimerized to cornusiin E in Tellima grandiflora
. Casuarictin
can be formed from it via oxidative dehydrogenation
of 2 other galloyl groups in Casuarina
and Stachyurus
species.
Ellagitannin
The ellagitannins are a diverse class of hydrolyzable tannins, a type of polyphenol formed primarily from the oxidative linkage of galloyl groups in 1,2,3,4,6-Pentagalloyl glucose...
s formed from 1,2,3,4,6-pentagalloyl-glucose. It can be found in Geum japonicum
Geum japonicum
Geum japonicum is a yellow-flowering perennial native to North America and East Asia, especially Japan. It may be synonymous with Geum macrophyllum, the North American flower. As a traditional herbal remedy it is known as an astringent and used in poultices...
and Syzygium aromaticum (clove). The compound shows anti-herpesvirus properties.
It is laccase
Laccase
Laccases are copper-containing oxidase enzymes that are found in many plants, fungi, and microorganisms. The copper is bound in several sites; Type 1, Type 2, and/or Type 3. The ensemble of types 2 and 3 copper is called a trinuclear cluster . Type 1 copper is available to action of solvents,...
-catalyzed dimerized to cornusiin E in Tellima grandiflora
Tellima grandiflora
Tellima grandiflora is a herbaceous perennial plant of the family Saxifragaceae.A herbaceous plant, with rounded leaves, emerging from a rootstock, up to 30cm high. It is evergreen in mild winters. Flowers are borne in spring and early summer, on spikes up to 60cm high...
. Casuarictin
Casuarictin
Casuarictin is an ellagitannin, a type of hydrolysable tannin. It can be found in Casuarina and Stachyurus species.The molecule is formed from tellimagrandin II, itself formed from pentagalloyl glucose via oxidation. Casuarictin is transformed into pedunculagin via loss of a gallate group, and...
can be formed from it via oxidative dehydrogenation
Dehydrogenation
Dehydrogenation is a chemical reaction that involves the elimination of hydrogen . It is the reverse process of hydrogenation. Dehydrogenation reactions may be either large scale industrial processes or smaller scale laboratory procedures....
of 2 other galloyl groups in Casuarina
Casuarina
Casuarina is a genus of 17 species in the family Casuarinaceae, native to Australasia, southeast Asia, and islands of the western Pacific Ocean. It was once treated as the sole genus in the family, but has been split into three genera .They are evergreen shrubs and trees growing to 35 m tall...
and Stachyurus
Stachyurus
Stachyurus is a flowering plant genus in the family StachyuraceaeCasuarictin, a type of tannin, is found in the species within the genus.-Species list:* S. chinensis* S. cordatulus* S. himalaicus* S. obovatus* S. praecox...
species.