Process for the preparation of...

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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C514S424000, C548S530000

Reexamination Certificate

active

07132444

ABSTRACT:
The present invention provides a novel process for preparation of trans-3-ethyl 2,5-dihydro-4-methyl-N-[2-[4-[[[[(4-methyl cyclohexyl)amino]carbonyl]amino]sulfonyl]phenyl]ethyl]-2-oxo-1H-pyrrole-1-carboxamide via the novel intermediate compounds of formula 3.

REFERENCES:
patent: 4379785 (1983-04-01), Weyer et al.
patent: 5264449 (1993-11-01), Albaugh

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