Category:FL

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Revision as of 11:05, 3 March 2008

FL: Flavonoid

Structural Characteristics

Flavonoid is a class of plant secondary metabolites that have two benzene rings (each called A-ring and B-ring) connected by a chain of three carbons (Figure 1).
Figure 1: The Backbone of Flavonoid Structure

The carbon chain, corresponding to the numbers 2,3,4 in Figure 1, is linked to a hydroxyl group in the A-ring to form the C-ring. The class of flavonoids are usually determined by the modification pattern of the C-ring (Table 1).

FLx FLxy
FL1 Aurone and Chalcone
Fl1.png
FL1A Aurone
FL1B Auronol
FL1C Chalcone
FL1D Dihydrochalcone
FL2 Flavanone
100px
FL2F Flavanone
FL3 Flavone
100px
FL3F Flavone
FL4 Dihydroflavonol
100px
FL4D Dihydroflavonol
FL5 Flavonol
100px
FL5F Flavonol
FL6 Flavan
100px
FL6F Flavan
FL63 Flavan 3-ol
FL64 Flavan 4-ol
FL6D Flavan 3,4-diol
FL7 Anthocyanin
100px
FL7A Anthocyanin
FL7D 3-Desoxyanthocyanin
FLI Isoflavonoid
100px
FLIA Isoflavone
FLIB Isoflavanone
FLIC Isoflavan
FLID Pterocarpane
FLIE Coumestan
FLIF Rotenoid
FLIG Coumaranochromone
FLIH 3-Arylcoumarin
FLII 2-Arylbenzofuran
FLIJ alpha-Methoxynbenzoin
FLN Neoflavonoid
70px
FLNA 4-Arylcoumarin
FLNB 4-Arylchroman
FLNC Dalbergiquinol
FLND Dalbergione
FLNE Neoflavene
FLNF Coumarinic acid


Biosynthesis

Flavonoid is synthesized through the phenylpropanoid-acetate pathway in all higher plants. It is responsible for many biological activities including pigments, anti-oxidative or anti-allergic agents, and signaling elements in nodule formation. Some of them are quite familiar in our daily life.


Familiar examples. anthocyanin (blueberry), isoflavone (soybean), rutin (soba noodle), catechin (tea), flavan-diol (tea), naringeninchalcone (tomato), polyphenol (wine, cacao)

Subcategories

This category has the following 10 subcategories, out of 10 total.

F

  • FL1(4 C)
  • FL2(1 C)
  • FL3(1 C)
  • FL4(1 C)

F cont.

  • FL5(1 C)
  • FL6(4 C)
  • FL7(2 C)
  • FLI(10 C)

F cont.

  • FLN(6 C)
  • [×] FLT(empty)

Pages in category "FL"

The following 2 pages are in this category, out of 2 total.

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