Page 8 - phytochemistry general program
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2. Less N-methyl group (Nor): e.g. Ephedrine & Nor-Ephedrine Nicotine &
Nor-Nicotine
Ephedrine
Nor-Ephedrine
3. Less one molecule of H2O (Apo):
Morphine & Apomorphine
Atropine & Apoatropine
Properties of Alkaloids
I- Physical Properties:
Most of alkaloids are:
Bitter in Taste . √ .1
Odorless. √ .2
.3
Colorless. .4
.5
Crystalline
Optically active.
Exceptions:
Colored alkaloids: e.g. Colchicine, Berberine,Psychotrine .1
Liquid alkaloids .1
Scopolamine , Pilocarpine e.g. Non-volatile liquid .2
Pelletierine Coniine ,Nicotine Volatile-liquid e.g. .3
Optical activity of alkaloids:
Ciral centers → different isomers.
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