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Hydroxylation Patterns (水酸基パターン)

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Category Names in the 3rd Class
ID Description

The 5th and 6th digits of our flavonoid ID indicates the hydroxylation patters of A-ring and B-ring (See the upper-right figure), 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 Character:	N not glycosylated	G O-glycoside	C C-glycoside	D both glycosides
Second Character:	S not modified	M alkylated	I prenylated	R cyclic-prenylated
F furanoFL	P pyranoFL	D furano and pyranoFL	N phenylpropanoid	C others

Other Unusual Patterns (特殊な構造)

These types are not classified in the above chart.

QU: Quinone	[[Special:Search&ns0=1&search={{{1}}}QU|QU (0 pages) ]]	HX: alpha-Hydroxy	[[Special:Search&ns0=1&search={{{1}}}HX|HX (0 pages) ]]	HY: beta-Hydroxy	[[Special:Search&ns0=1&search={{{1}}}HY|HY (0 pages) ]]	PT: Peltogynoid	[[Special:Search&ns0=1&search={{{1}}}PT|PT (0 pages) ]]
RT: Retrocalchone	[[Special:Search&ns0=1&search={{{1}}}RT|RT (0 pages) ]]	WX: Dehydro-backbone	[[Special:Search&ns0=1&search={{{1}}}WX|WX (0 pages) ]]	RN: Additional rings	[[Special:Search&ns0=1&search={{{1}}}RN|RN (0 pages) ]]	UN: Others	[[Special:Search&ns0=1&search={{{1}}}UN|UN (0 pages) ]]

Glycosylation Patterns (糖修飾パターン)

Details of the 4th Class: Glycosylation patterns (7th and 8th digits)

	N: no glycosylation	G: O-glycoside	C: C-glycoside	D: O- & C-glycoside
S: no modification
M: alkylated
I: prenylated
R: cyclic prenylated
F: furano FL
P: pyrano FL
D: furano & pyrano FL
N: prenylpropanoid
C: others