Tetrahydroisoquinoline derivatives as melatonin MT2 antagonists

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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C546S146000

Reexamination Certificate

active

06908931

ABSTRACT:
The invention encompasses a series of tetrahydroisoquinolines of formula I which are antagonists of the human melatonin MT2receptor and are useful as chronobiotic and sleep agents.

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