Selective PDE4 inhibition is achieved by aryl and heteroaryl pyrazole compounds. The compounds exhibit improved PDE4 inhibition as compared to compounds such as rolipram and show selectivity with regard to inhibition of other classes of PDEs.
Compounds having the structure:
are HIV reverse transcriptase inhibitors, wherein A, X, Y, Z, R
1
and R
2
are defined herein. The compounds and their pharmaceutically acceptable salts are useful in the inhibition of HIV reverse transcriptase, the prophylaxis and treatment of infection by HIV and in the prophylaxis, delay in the onset, and treatment of AIDS. The compounds and their salts can be employed as ingredients in pharmaceutical compositions, optionally in combination with other antivirals, immunomodulators, antibiotics or vaccines.
The present invention relates to a compound represented by the formula (I):
or a pharmacologically acceptable salt thereof, wherein R
1
, R
2
, R
3
, and R
4
are the same or different and each represent a hydrogen atom or a C1-6 alkyl group; X
1
represents a C1-6 alkylene group that may be substituted; X
a
represents a methoxy group or a fluorine atom; X
b
represents an oxygen atom or a methylene group, provided that X
b
is only an oxygen atom when X
a
is a methoxy group; and Ar
1
represents an aryl group, pyridinyl group, aryloxy group, or pyridinyloxy group that may have a substituent such as a halogen atom; and to use of the compound or salt as a pharmaceutical agent.
Discovery of 3-{5-[(6-Amino-1<i>H</i>-pyrazolo[3,4-<i>b</i>]pyridine-3-yl)methoxy]-2-chlorophenoxy}-5-chlorobenzonitrile (MK-4965): A Potent, Orally Bioavailable HIV-1 Non-Nucleoside Reverse Transcriptase Inhibitor with Improved Potency against Key Mutant Viruses
作者:Thomas J. Tucker、John T. Sisko、Robert M. Tynebor、Theresa M. Williams、Peter J. Felock、Jessica A. Flynn、Ming-Tain Lai、Yuexia Liang、Georgia McGaughey、Meiquing Liu、Mike Miller、Gregory Moyer、Vandna Munshi、Rebecca Perlow-Poehnelt、Sridhar Prasad、John C. Reid、Rosa Sanchez、Maricel Torrent、Joseph P. Vacca、Bang-Lin Wan、Youwei Yan
DOI:10.1021/jm800856c
日期:2008.10.23
transcriptase inhibitors (NNRTIs) have been shown to be a key component of highly active antiretroviral therapy (HAART). The use of NNRTIs has become part of standard combination antiviral therapies producing clinical outcomes with efficacy comparable to other antiviral regimens. There is, however, a critical issue with the emergence of clinical resistance, and a need has arisen for novelNNRTIs with a broad spectrum
We identified a novelclass of aryl-substituted triazine compounds as potent non-nucleoside reverse transcriptase inhibitors (NNRTIs) during a high-throughput screening campaign that evaluated more than 200000 compounds for antihuman immunodeficiency virus (HIV) activity using a cell-based full replication assay. Herein, we disclose the optimization of the antiviral activity in a cell-based assay system