期刊
JOURNAL OF MEDICINAL CHEMISTRY
卷 50, 期 1, 页码 149-164出版社
AMER CHEMICAL SOC
DOI: 10.1021/jm0609364
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Starting from a rapidly metabolized adamantane 11 beta-hydroxysteroid dehydrogenase type 1 (11 beta-HSD1) inhibitor 22a, a series of E-5-hydroxy-2-adamantamine inhibitors, exemplified by 22d and (+/-)-22f, was discovered. Many of these compounds are potent inhibitors of 11 beta-HSD1 and are selective over 11 beta-HSD2 for multiple species (human, mouse, and rat), unlike other reported species-selective series. These compounds have good cellular potency and improved microsomal stability. Pharmacokinetic profiling in rodents indicated moderate to large volumes of distribution, short half-lives, and a pharmacokinetic species difference with the greatest exposure measured in rat with 22d. One hour postdose liver, adipose, and brain tissue 11 beta-HSD1 inhibition was confirmed with (+/-)-22f in a murine ex vivo assay. Although 5,7-disubstitued-2-adamantamines provided greater stability, a single, E-5-position, polar functional group afforded inhibitors with the best combination of stability, potency, and selectivity. These results indicate that adamantane metabolic stabilization sufficient to obtain short-acting, potent, and selective 11 beta-HSD1 inhibitors has been discovered.
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