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J Med Chem. 2003 Apr 24;46(9):1769-72.

Design and structure-activity relationships of 2-alkyl-3-aminomethyl-6-(3-methoxyphenyl)-7-methyl-8-(2-fluorobenzyl)imidazolo[1,2-a]pyrimid-5-ones as potent GnRH receptor antagonists.

Author information

1
Department of Medicinal Chemistry, Neurocrine Biosciences, Inc., 10555 Science Center Drive, San Diego, California 92121, USA.

Abstract

SAR studies of 7-phenylpyrrolo[1,2-a]pyrimid-4-ones 1 and 2, and 2-phenylimidazolo[1,2-a]pyrimidines 3 and 4, as nonpeptide human GnRH receptor antagonists, lead us to believe that the aromatic ring at position-2 of 4 is no longer crucial for the binding once an aryl group is incorporated at postion-6. We report here the use of a 2-alkyl group on the imidazolo[1,2-a]pyrimidone core to generate potent GnRH receptor antagonists. This discovery enabled us to obtain smaller but equally potent GnRH receptor antagonists.

PMID:
12699396
DOI:
10.1021/jm0205402
[Indexed for MEDLINE]

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