Page 78 - phytochemistry I - PharmD Clinical
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2- Monocyclic monoterpene alcohols:
Menthol
Source: Japanese peppermint (Mentha arvensis).
OH
Preparation of menthol from peppermint oil:
The solid portion separated from the volatile oil by cooling is called
"stearoptene", and the liquid portion is called "eleoptene".
Synthesis of menthol:
OH HydHr2ogenatiOoH n
Thymol dl-menthol
Racemic mixture
Menthol and thymol separation:
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