1. ***Primary metabolite versus Secondary metabolite: -Distribution: -Pharmacological action: - Scheme for biosynthetic pathway.

2. H2O+ CO2 hv

3. Glycosides:
*Definition:
-Physicochemical properties:
physical state, optical activity,

4. -Solubility, extraction.
-Enzyme deactivation. :

5. -Significance in plant:
-Nomenclature

6. Amygdalase H
glc
Prunasin
Amygdalin
Prunase
glc
HCN (g)

7. ****Classification:
A)- According to the linkage:
B)- According to botanical source .

8. C)- According to the sugar type.
D)- According to the aglycone type.
E)- According to the pharmacological action:
F)- According to the configuration

9. G)- According to the metabolic origin

10. **Phenolic glycosides:
-Flavonoid, isoflavonids,
anthocyanins,lignans
-Anthraquinone
-Coumarins

11. Coumarin
Anthraquinone
Flavonoid
Anthocyanin

12. Pharmacological action:
-Stimulant laxative: increasing contractility of colonic muscle and subsequently facilitate evacuation of colonic content
Medicinal uses:
-Acute constipation.
-Presurgery.
-Preoperative.