Page 45 - Pharmd general phytochemistry I-Final2024_LEUCTERS
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4. Sulphur containing compounds
Sulphides occur quite frequently in plants, probably in the form of
glycosides which are decomposed by the process of distillation:
1. Hydrogen sulphide (H2S).
2. Carbon disulphide (CS2).
3. Dimethyl sulphide (CH3)2S.
4. Diallyl disulphide: Occurs in oil of onion and oil of garlic.
5. Allylisothiocyanate: CH2=CH-CH2-N=C=S
Source:
It occurs in glycosidal combination as sinigrin in the seeds of black
mustard.
Uses:
� Allylisothocyanate is used in flavoring of different kinds of food
products.
� It is used externally in some pharmaceutical preparations e.g.
plasters
and as rubefacient.
5. Lactones containing compounds:
Bergaptene
Methoxy furanocoumarin
Source:
Bergamot oil and Ammi majus fruits.
Uses:
Bergaptene is used for treatment of Leukoderma.
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