Category:FL

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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). [[Image:FL.gif|thumb|150px|right|Figure 1: The Backbone of Flavonoid Structure]]
 
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). [[Image:FL.gif|thumb|150px|right|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).
 
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).
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{| class="wikitable" border="1" cellpadding="2" cellspacing="1" margin: 1em 1em 1em 1em"
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|-
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!colspan="2"|FLx
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!colspan="2"|FLxy
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|-
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|rowspan="4"|FL1
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|rowspan="4"|[[:Category:FL1|Aurones and Chalcone]]
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|FL1A||[[:Category:FL1A|Aurone]]
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|-
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|FL1B||[[:Category:FL1B|Auronol]]
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|-
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|FL1C||[[:Category:FL1C|Chalcone]]
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|-
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|FL1D||[[:Category:FL1D|Dihydrochalcone]]
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|-
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|FL2||[[:Category:FL2|Flavanone]]||FL2F||[[:Category:FL2F|Flavanone]]
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|-
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|FL3||[[:Category:FL3|Flavone]]||FL3F||[[:Category:FL3F|Flavone]]
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|-
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|FL4||[[:Category:FL4|Dihydroflavonol]]||FL4D||[[:Category:FL4D|Dihydroflavonol]]
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|-
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|FL5||[[:Category:FL5|Flavonol]]||FL5F||[[:Category:FL5F|Flavonol]]
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|-
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|rowspan="4"|FL6
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|rowspan="4"|[[:Category:FL6|Flavan]]
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|FL6F||[[:Category:FL6F|Flavan]]
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|-
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|FL63||[[:Category:FL63|Flavan 3-ol]]
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|-
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|FL64||[[:Category:FL64|Flavan 4-ol]]
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|-
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|FL6D||[[:Category:FL6D|Flavan 3,4-diol]]
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|-
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|rowspan="2"|FL7
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|rowspan="2"|[[:Category:FL7|Anthocyanin]]
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|FL7A||[[:Category:FL7A|Anthocyanin]]
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|-
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|FL7D||[[:Category:FL7D|3-Desoxyanthocyanin]]
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|-
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|rowspan="10"|FLI
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|rowspan="10"|[[:Category:FLI|Isoflavonoid]]
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|FLIA||[[:Category:FLIA|Isoflavone]]
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|-
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|FLIB||[[:Category:FLIB|Isoflavanone]]
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|-
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|FLIC||[[:Category:FLIC|Isoflavan]]
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|-
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|FLID||[[:Category:FLID|Pterocarpane]]
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|-
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|FLIE||[[:Category:FLIE|Coumestan]]
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|-
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|FLIF||[[:Category:FLIF|Rotenoid]]
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|-
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|FLIG||[[:Category:FLIG|Coumaranochromone]]
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|-
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|FLIH||[[:Category:FLIH|3-Arylcoumarin]]
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|-
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|FLII||[[:Category:FLII|2-Arylbenzofuran]]
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|-
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|FLIJ||[[:Category:FLIJ|alpha-Methoxynbenzoin]]
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|-
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|rowspan="6"|FLN
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|rowspan="6"|[[:Category:FLN|Neoflavonoid]]
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|FLNA||[[:Category:FLNA|4-Arylcoumarin]]
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|-
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|FLNB||[[:Category:FLNB|4-Arylchroman]]
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|-
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|FLNC||[[:Category:FLNC|Dalbergiquinol]]
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|-
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|FLND||[[:Category:FLND|Dalbergione]]
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|-
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|FLNE||[[:Category:FLNE|Neoflavene]]
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|-
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|FLNF||[[:Category:FLNF|Coumarinic acid]]
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|-
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|}
  
 
<table border=1>
 
<table border=1>

Revision as of 07:04, 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 Aurones and Chalcone FL1A Aurone
FL1B Auronol
FL1C Chalcone
FL1D Dihydrochalcone
FL2 Flavanone FL2F Flavanone
FL3 Flavone FL3F Flavone
FL4 Dihydroflavonol FL4D Dihydroflavonol
FL5 Flavonol FL5F Flavonol
FL6 Flavan FL6F Flavan
FL63 Flavan 3-ol
FL64 Flavan 4-ol
FL6D Flavan 3,4-diol
FL7 Anthocyanin FL7A Anthocyanin
FL7D 3-Desoxyanthocyanin
FLI Isoflavonoid 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 FLNA 4-Arylcoumarin
FLNB 4-Arylchroman
FLNC Dalbergiquinol
FLND Dalbergione
FLNE Neoflavene
FLNF Coumarinic acid
names structure class description
Aurones
and
Chalcones		 100px FL1 The C-ring is absent (chalcones) or a 5-member ring (aurones).
Flavanone 100px FL2
Flavone 100px FL3
Dihydroflavonol 100px FL4 Because many flavonols (FL5) are hydroxylated at their position 3, they form a different category in our classification.
Flavonol 100px FL5
Flavan 100px FL6
Anthocyanin 100px FL7
Isoflavonoid 100px FLI
Neoflavonoid 70px FLN


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.

F

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