Category:FL5F

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Flavonol


Flavonoid Top Molecule Index Author Index Journals Structure Search Food New Input

Upper classes : FL Flavonoid : FL5 Flavonol

Contents

Overview

Flavonols are most widespread of the flavonoids and the main dietary flavonols are: kaempferol, quercetin, isorhamnetin, and myricetin.

The majority of flavonol glycosides (including dihydroflavonols) are present as O-glycosides and not C-glycosides (see Glycosylation Patterns below). Most glycosides are 3-, 7-, 3'-, 4'-glycosides and their combinations. Only flavonols and flavones contain rare glycosidic sugars such as alloside (allose), mannoside (mannose), galacturonic acid (galacturonide), and apioside (this is found in isoflavone too).
Also, 2 flavonols (FL5FF8NS0002 FL5FF8NSH001) are exceptionally found from a fungus Aspergillus candidus.

Biosynthesis

Excerpt from the FL top page

naringenin
Fl2.png
FLAVANONE
kaempferol
FL5FAANS0001.png
Fl5.png
FLAVONOLS
quercetin
FL5FACNS0001.png
myricetin
FL5FAGNS0001.png
F3H Arrow00d35.png (hydroxylase) Arrow00ur35.png FLS:flavonol synthase (oxygenase) Arrow00ur35.png FLS Arrow00ur35.png FLS
Fl4.png
DIHYDRO
FLAVONOLS
dihydro-kaempferol
FL4DAANS0001.png
F3'H
Arrow00r100.png
+OH in B-ring
dihydro-quercetin
FL4DACNS0001.png
F3'5'H
Arrow00r100.png
+OH in B-ring
dihydro-myricetin
FL4DAGNS0001.png
Fl5f.png


Major Plant Families

The number in each family is counted as the number of genera (not species) listed in our registered references. Each reference record is accessible by clicking the link in compound pages. The taxonomy follows the APG-II classification. For details (or if the figure is broken), visit this page.

各科のカウントは種名でなく文献に記載された属名の数です。文献は代謝物ページのリンクからたどれ、分類はAPG-IIです。左の図が表示されない場合はここをクリックしてください。

Patterns of Hydroxylation

The 5th and 6th digits of our flavonoid ID indicates the hydroxylation patterns of A-ring and B-ring (See the upper-right figure. The leftmost ring is A, rightmost is B), respectively. The following chart is spanned by these 2 digits. R indicates H or CH3, and R' indicates H or R. Numbers are IUPAC positions. The value in each cell (such as GS: glycosilation only) corresponds to the 7th and 8th digits, which is explained at the bottom of this page.


Details of the 3rd Class: Hydroxylation pattern of A and B rings (5th and 6th digits)

Position of -OH (-OCH3) groups
      6th digit →
5th digit ↓

FL A.png FL B.png FL C.png FL D.png FL E.png FL F.png FL G.png FL H.png FL I.png FL J.png FL K.png FL L.png FL 8.png FL 9.png
 A (593 pages)  B (66 pages)  C (679 pages)  D (148 pages)  E (38 pages)  F (21 pages)  G (142 pages)  H (16 pages)  I (18 pages)  J (16 pages)  K (12 pages)  L (73 pages)  8 (23 pages)  9 (90 pages)
FL A .png  A (992 pages)  CS (2 pages) DS (1 pages) GA (47 pages) GI (16 pages) GL (113 pages) GM (2 pages) GP (1 pages) GS (141 pages) NC (2 pages) NI (11 pages) NM (2 pages) NN (2 pages) NP (3 pages) NR (1 pages) NS (6 pages)  GA (1 pages) GI (29 pages) GL (3 pages) GP (1 pages) GS (12 pages) NI (3 pages) NS (2 pages)  CS (2 pages) GA (44 pages) GI (1 pages) GL (80 pages) GM (1 pages) GS (127 pages) NC (1 pages) ND (1 pages) NF (2 pages) NI (7 pages) NM (1 pages) NP (7 pages) NS (16 pages)  GA (26 pages) GL (41 pages) GS (36 pages) NI (2 pages) NS (6 pages)  GA (3 pages) GI (1 pages) GL (5 pages) GS (5 pages) NF (1 pages) NS (2 pages)  GL (3 pages) GS (2 pages) NS (1 pages)  GA (8 pages) GL (11 pages) GM (1 pages) GN (2 pages) GS (36 pages) NM (1 pages) NS (1 pages)  GA (1 pages) GL (6 pages) GS (5 pages) NS (1 pages)  CS (1 pages) GA (4 pages) GL (5 pages) GS (5 pages) NS (1 pages)  GA (2 pages) GS (3 pages) NM (2 pages) NS (1 pages)  GS (2 pages) NS (1 pages)  GL (1 pages) GS (3 pages) NI (2 pages) NS (20 pages)  GL (2 pages) GS (1 pages) NS (7 pages)  GL (3 pages) GM (1 pages) GS (6 pages) NI (3 pages) NM (6 pages) NN (1 pages) NP (3 pages) NS (8 pages)
FL B .png  B (20 pages)  GA (2 pages) NI (1 pages) NS (1 pages)  NS (1 pages)  GA (1 pages) GL (2 pages) GS (2 pages) NS (1 pages)  NS (1 pages)  NS (1 pages)  GS (1 pages) NS (1 pages)  GA (1 pages) GL (1 pages) GS (2 pages) NS (1 pages)
FL C .png  C (114 pages)  CS (1 pages) GA (4 pages) GI (1 pages) GL (11 pages) GS (14 pages) NI (1 pages) NM (1 pages) NS (2 pages)  GL (2 pages) GS (1 pages) NC (1 pages) NS (2 pages)  CS (1 pages) DS (1 pages) GA (9 pages) GL (4 pages) GS (13 pages) NS (5 pages)  GA (4 pages) GL (4 pages) GS (4 pages) NS (2 pages)  GA (1 pages) GI (1 pages) GL (4 pages) GS (1 pages) NI (2 pages) NS (3 pages)  GS (3 pages) NS (1 pages)  CS (1 pages) GA (1 pages) GS (3 pages) NS (1 pages)  GA (1 pages) NS (1 pages)  NS (2 pages)
FL D .png  D (129 pages)  GS (8 pages) NF (4 pages) NI (3 pages) NM (4 pages) NS (4 pages)  GS (1 pages) NC (1 pages) NF (1 pages) NM (2 pages) NS (3 pages)  GS (16 pages) NF (2 pages) NI (4 pages) NM (5 pages) NP (2 pages) NS (5 pages)  GS (4 pages) NF (3 pages) NI (6 pages) NM (5 pages) NS (4 pages)  CS (1 pages) GS (3 pages) NI (1 pages) NS (3 pages)  GL (1 pages) GS (1 pages) NF (1 pages) NM (1 pages) NS (5 pages)  GS (4 pages) NM (2 pages) NS (1 pages)  NS (3 pages)  NS (2 pages)  GS (2 pages) NM (2 pages) NS (2 pages)  NS (7 pages)
FL E .png  E (284 pages)  GA (5 pages) GL (10 pages) GS (26 pages) NI (7 pages) NM (1 pages) NS (26 pages)  GA (4 pages) GL (15 pages) GS (70 pages) NF (1 pages) NI (2 pages) NM (4 pages) NS (55 pages)  GL (1 pages) GS (1 pages) NS (18 pages)  GS (5 pages) NS (18 pages)  NS (2 pages)  GS (1 pages) NF (1 pages) NM (1 pages) NS (10 pages)
FL F .png  F (224 pages)  GA (1 pages) GL (11 pages) GS (28 pages) NI (4 pages) NM (2 pages) NS (25 pages)  GA (6 pages) GL (14 pages) GS (28 pages) NI (9 pages) NS (38 pages)  GS (3 pages) NS (10 pages)  GS (1 pages) NS (7 pages)  NN (1 pages) NS (9 pages)  NI (6 pages) NM (6 pages) NS (15 pages)
FL G .png  G (95 pages)  GL (1 pages) GS (3 pages) NI (3 pages) NS (10 pages)  GA (2 pages) GL (3 pages) GS (2 pages) NI (1 pages) NS (29 pages)  GS (1 pages) NS (17 pages)  NS (13 pages)  NS (1 pages)  NI (1 pages) NS (8 pages)
FL 1 .png  1 (42 pages)  CS (1 pages) GL (1 pages) GS (2 pages) NF (1 pages) NS (2 pages)  CS (1 pages) GL (2 pages) GS (5 pages) NF (1 pages) NP (3 pages) NS (7 pages)  GS (3 pages) NF (1 pages) NS (6 pages)  GL (1 pages)  NF (2 pages) NP (1 pages) NS (2 pages)
FL 2 .png  2 (14 pages)  GS (1 pages) NP (1 pages) NS (2 pages)  NI (1 pages) NP (1 pages) NS (4 pages)  NS (1 pages)  NS (1 pages)  GF (1 pages) NP (1 pages)
FL 3 .png  3 (14 pages)  NS (4 pages)  NS (6 pages)  NS (1 pages)  GS (2 pages) NS (1 pages)
FL 4 .png  4 (2 pages)  NS (1 pages)  GS (1 pages)
FL 9 .png  9 (5 pages)  GL (1 pages) NI (1 pages)  NM (1 pages) NS (1 pages)  NS (1 pages)

Abbreviations used in the above chart

First Characters 

N not glycosylated; G O-glycoside; C C-glycoside; D both glycosides;

Second Characters 

S not modified; M alkylated; I prenylated; R cyclic-prenylated; F furanoFL; P pyranoFL; D furano and pyranoFL; N phenylpropanoid; C others;

Special Second Character only for Anthycyanin (FL7) 

A Galactosylated; L Glucosylated; O modified with other sugars;

Other Unusual Patterns

These types are not classified in the above chart.

Quinone  QU (0 pages) alpha-Hydroxy  HX (0 pages) beta-Hydroxy  HY (0 pages) Peltogynoid  PT (8 pages)
Retrocalchone  RT (0 pages) Dehydro-backbone  WX (0 pages) Additional rings  RN (0 pages) Others  UN (0 pages)
Pyranoanthocyanin (FL7 only)  RX (0 pages)

Patterns of Glycosylation

The 7th and 8th digits of the flavonoid ID indicates the glycosylation, and other modification patterns, respectively. The following chart is spanned by these 2 digits. The value in each cell (such as AA for the standard form) corresponds to the 5th and 6th digits.


Details of the 4th Class: Glycosylation patterns (7th and 8th digits)
      7th digit →
8th digit ↓
No glycosylation  N (681 pages) O-glycoside  G (1249 pages) C-glycoside  C (11 pages) O- & C-glycoside  D (2 pages)
no modification  S (1160 pages)  19 (2 pages) 1A (2 pages) 1C (7 pages) 1G (6 pages) 2A (2 pages) 2C (4 pages) 2G (1 pages) 2L (1 pages) 39 (1 pages) 3A (4 pages) 3C (6 pages) 3L (1 pages) 4A (1 pages) 9C (1 pages) 9G (1 pages) A8 (7 pages) A9 (8 pages) AA (6 pages) AB (2 pages) AC (16 pages) AD (6 pages) AE (2 pages) AF (1 pages) AG (1 pages) AH (1 pages) AI (1 pages) AJ (1 pages) AK (1 pages) AL (20 pages) BA (1 pages) BB (1 pages) BC (1 pages) BD (1 pages) BE (1 pages) BF (1 pages) BG (1 pages) CA (2 pages) CB (2 pages) CC (5 pages) CD (2 pages) CE (3 pages) CF (1 pages) CG (1 pages) CJ (1 pages) CK (2 pages) DA (4 pages) DB (3 pages) DC (5 pages) DD (4 pages) DE (3 pages) DF (5 pages) DG (1 pages) DH (3 pages) DI (2 pages) DJ (2 pages) DK (7 pages) E8 (2 pages) E9 (10 pages) EA (26 pages) EC (55 pages) EG (18 pages) EL (18 pages) F8 (9 pages) F9 (15 pages) FA (25 pages) FC (38 pages) FG (10 pages) FL (7 pages) G8 (1 pages) G9 (8 pages) GA (10 pages) GC (29 pages) GG (17 pages) GL (13 pages) PT (8 pages)  1A (2 pages) 1C (5 pages) 1G (3 pages) 2A (1 pages) 39 (2 pages) 4G (1 pages) A8 (1 pages) A9 (6 pages) AA (141 pages) AB (12 pages) AC (127 pages) AD (36 pages) AE (5 pages) AF (2 pages) AG (36 pages) AH (5 pages) AI (5 pages) AJ (3 pages) AK (2 pages) AL (3 pages) BC (2 pages) BF (1 pages) BG (2 pages) CA (14 pages) CB (1 pages) CC (13 pages) CD (4 pages) CE (1 pages) CF (3 pages) CG (3 pages) DA (8 pages) DB (1 pages) DC (16 pages) DD (4 pages) DE (3 pages) DF (1 pages) DG (4 pages) DJ (2 pages) E9 (1 pages) EA (26 pages) EC (70 pages) EG (1 pages) EL (5 pages) FA (28 pages) FC (28 pages) FG (3 pages) FL (1 pages) GA (3 pages) GC (2 pages) GG (1 pages)  1A (1 pages) 1C (1 pages) AA (2 pages) AC (2 pages) AI (1 pages) CA (1 pages) CC (1 pages) CG (1 pages) DE (1 pages)  AA (1 pages) CC (1 pages)
alkylated  M (54 pages)  9C (1 pages) A9 (6 pages) AA (2 pages) AC (1 pages) AG (1 pages) AJ (2 pages) CA (1 pages) DA (4 pages) DB (2 pages) DC (5 pages) DD (5 pages) DF (1 pages) DG (2 pages) DJ (2 pages) E9 (1 pages) EA (1 pages) EC (4 pages) F9 (6 pages) FA (2 pages)  A9 (1 pages) AA (2 pages) AC (1 pages) AG (1 pages)
prenylated  I (0 pages)  2C (1 pages) 9A (1 pages) A9 (3 pages) AA (11 pages) AB (3 pages) AC (7 pages) AD (2 pages) AL (2 pages) BA (1 pages) CA (1 pages) CE (2 pages) DA (3 pages) DC (4 pages) DD (6 pages) DE (1 pages) EA (7 pages) EC (2 pages) F9 (6 pages) FA (4 pages) FC (9 pages) G9 (1 pages) GA (3 pages) GC (1 pages)  AA (16 pages) AB (29 pages) AC (1 pages) AE (1 pages) CA (1 pages) CE (1 pages)
cyclic prenylated  R (0 pages)  AA (1 pages)
furano FL  F (22 pages)  19 (2 pages) 1A (1 pages) 1C (1 pages) 1G (1 pages) AC (2 pages) AE (1 pages) DA (4 pages) DB (1 pages) DC (2 pages) DD (3 pages) DF (1 pages) E9 (1 pages) EC (1 pages)  29 (1 pages)
pyrano FL  P (24 pages)  19 (1 pages) 1C (3 pages) 29 (1 pages) 2A (1 pages) 2C (1 pages) A9 (3 pages) AA (3 pages) AC (7 pages) DC (2 pages)  AA (1 pages) AB (1 pages)
furano & pyrano FL  D (1 pages)  AC (1 pages)
prenylpropanoid  N (6 pages)  A9 (1 pages) AA (2 pages) F8 (1 pages)  AG (2 pages)
others  C (5 pages)  AA (2 pages) AC (1 pages) CB (1 pages) DB (1 pages)
3-Gal related A N.A.  AA (47 pages) AB (1 pages) AC (44 pages) AD (26 pages) AE (3 pages) AG (8 pages) AH (1 pages) AI (4 pages) AJ (2 pages) BA (2 pages) BC (1 pages) BG (1 pages) CA (4 pages) CC (9 pages) CD (4 pages) CE (1 pages) CG (1 pages) CJ (1 pages) EA (5 pages) EC (4 pages) FA (1 pages) FC (6 pages) GC (2 pages) N.A. N.A.
3-Glc related L N.A.  1A (1 pages) 1C (2 pages) 1L (1 pages) 9A (1 pages) A8 (2 pages) A9 (3 pages) AA (113 pages) AB (3 pages) AC (80 pages) AD (41 pages) AE (5 pages) AF (3 pages) AG (11 pages) AH (6 pages) AI (5 pages) AL (1 pages) BC (2 pages) BG (1 pages) CA (11 pages) CB (2 pages) CC (4 pages) CD (4 pages) CE (4 pages) DF (1 pages) EA (10 pages) EC (15 pages) EG (1 pages) FA (11 pages) FC (14 pages) GA (1 pages) GC (3 pages) N.A. N.A.
other sugar at 3 O N.A. N.A. N.A.

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