Page 39 - PG 504-theoretical notes-phyto-1-2024-2025..

Clinical pharmacy PharmD program Third level Phytochemistry-1 (PG-504)

O CHO CHO O

CH OH CH OH CH OH CH OH
2
2
2
2
Richstein Formula Richstein Formula
D-Glucose L-Glucose
Diastereoisomers: Sugar pair which is not mirror images, and differ widely in

both physical and chemical properties and given different names, e.g. D-allose

and D-mannose.

Epimers: two diastereoisomers, differ only in the configuration of a single

asymmetric center.

CHO CHO CHO CHO

CH OH CH OH CH OH CH OH
2
2
2
2
D-Glucose L-Glucose D-Allose D-Mannose
Enantiomers Diastereoisomers

CHO CHO CHO CHO

CH OH CH OH CH OH CH OH
2
2
2
2
D-Glucose D-Mannose D-Glucose D-Galactose
Epimers 4-Epimers

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