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