Bi Gi畉ng Flavonoid & D動董味c Li棚味u Ch動a Flavonoid nataliej4
油
1. The document discusses the classification and structure of flavonoids.
2. Flavonoids are classified into eu-flavonoids, iso-flavonoids, and neo-flavonoids based on their basic skeleton structure.
3. They are also classified according to the type of sugar chain attachments such as O-glycosides, C-glycosides, and sulfate glycosides.
5. 5
O glycosid S glycosid
N glycosidC glycosid
GLYCOSID
ROH + HX R RXR
2.1. Ph但n loa味i theo loa味i d但y n担i glycosid
Thioglycosid =
Glucosinolat
6. O-glycosid
Hydrat aldehydAldehyd Ban acetal Acetal
H
C
O
R
+ H2O
OH
CH
OH
R
+ HO-R + HO-R
OR
CH
OH
R
OR
CHR
OR
動董ng
Glycon
Ph但n t畛 h動u c董
(A)glycon
Glycosid
H O R+
O
HO
HO
HO CH2OH
O R
O
HO
HO
HO CH2OH
OH
6
- H2O
42. 42
S畛 TH畛Y PHN
thu短y pha但n ba竪ng
OH
OH
CHO
O
O
-glucosidase
strophanthobiase
H2SO4
Strophanthidin
Cymarin
K-Strophanthosid
K-Strophanthosid g
3cymglcglc O