Antagonists of human CCR5 receptor containing 4-(pyrazolyl)piperidine side chains. Part 2: Discovery of potent, selective, and orally bioavailable compounds.
Bioorg Med Chem Lett
; 14(4): 941-5, 2004 Feb 23.
Article
em En
| MEDLINE
| ID: mdl-15012998
ABSTRACT
Modifications of the alkyl acetic acid portion and the phenyl on pyrrolidine in our lead pyrazole compound 1 afforded the isopropyl compound 9. This compound is a potent CCR5 antagonist showing good in vitro antiviral activity against HIV-1, an excellent selectivity profile, and good oral bioavailability in three animal species. During this investigation, a new method for the preparation of alpha-(pyrrolidin-1-yl)-alpha,alpha-dialkyl acetic acid from a pyrrolidine and alpha-bromo-alpha,alpha-dialkyl acetic acid using silver triflate was discovered. This allowed us to prepare compounds such as 24 and 25 for the first time. A novel Pd-mediated N-dealkylation of alpha-(pyrrolidin-1-yl)acetic acid was also uncovered.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Piperidinas
/
Fármacos Anti-HIV
/
Antagonistas dos Receptores CCR5
Limite:
Animals
/
Humans
Idioma:
En
Revista:
Bioorg Med Chem Lett
Assunto da revista:
BIOQUIMICA
/
QUIMICA
Ano de publicação:
2004
Tipo de documento:
Article
País de afiliação:
Estados Unidos