Bupropion (amfebutamone) is an antidepressant of the aminoketone class, chemically unrelated to tricyclics or SSRIs. It is similar in structure to the stimulant cathinone, and to phenethylamines in general.

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... BUPROPION (Zyban®) is a prescription medicine to help people quit smoking. Bupropion can reduce the symptoms caused by stopping smoking. Bupropion can also decrease the urge to smoke and decrease nicotine cravings. Bupropion is used with a patient support program recommended by your physician. Generic bupropion sustained-release tablets for Zyban® are not yet available. ...
Drug Digest - more...

Bupropion Systematic (IUPAC) name (±)-1-(3-chlorophenyl)- 2-[(1, ...
Wikipedia - [full article]

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