期刊
JOURNAL OF MEDICINAL CHEMISTRY
卷 51, 期 21, 页码 6889-6901出版社
AMER CHEMICAL SOC
DOI: 10.1021/jm800569w
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A series of structurally constrained derivatives of the potent H-3 inverse agonist 1 was designed, synthesized, and evaluated as histamine H3 receptor inverse agonists. As a result. the N-cyclobutylpiperidin-4-yloxy group as in 2f was identified as an optimal surrogate structure for the flexible 1-pyrrolidinopropoxy group of 1. Subsequent optimization of the quinazolinone core of 2f revealed that Substitution at the 5-position of the quinazolinone ring influences potency. Representative derivatives 5a and 5s showed improved potency in a histamine release assay in rats and a receptor occupancy assay in mice.
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