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Hydroxylation Patterns (水酸基パターン)

Category Names in the 3rd Class
ID Description

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

A

B

C

D

E

F

G

H

I

J

K

L

8

9

A

B

C

D

E

F

G

1

2

3

4

9

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 (特殊な構造)

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 (0 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)

Glycosylation Patterns (糖修飾パターン)

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)

		N: no glycosylation	G: O-glycoside	C: C-glycoside	D: O- & C-glycoside
no modification	S
alkylated	M
prenylated	I
cyclic prenylated	R
furano FL	F
pyrano FL	P
furano & pyrano FL	D
prenylpropanoid	N
others	C
3-Gal related	A	N.A.		N.A.	N.A.
3-Glc related	L	N.A.		N.A.	N.A.
other sugar at 3	O	N.A.		N.A.	N.A.