Discovery of Phenylaminopyridine Derivatives as Novel HIV-1 Non-nucleoside Reverse Transcriptase Inhibitors. 2012

Junwon Kim, and Doohyun Lee, and Changmin Park, and Wonyoung So, and Mina Jo, and Taedong Ok, and Jeongjin Kwon, and Sunju Kong, and Suyeon Jo, and Youngmi Kim, and Jihyun Choi, and Hyoung Cheul Kim, and Yoonae Ko, and Inhee Choi, and Youngsam Park, and Jaewan Yoon, and Moon Kyeong Ju, and Junghwan Kim, and Sung-Jun Han, and Tae-Hee Kim, and Jonathan Cechetto, and Jiyoun Nam, and Peter Sommer, and Michel Liuzzi, and Jinhwa Lee, and Zaesung No
Medicinal Chemistry 2, Medicinal Chemistry 1, Medicinal Chemistry 3, Drug Biology Group, Screening Technology Platforms Group, DMPK Group, Cell Biology of Retroviruses Group, Early Discovery Program, and Late Discovery Program, Institut Pasteur Korea (IP-K) , Sampyeong-dong 696, Bundang-gu, Seongnam-si, Gyeonggi-do 463-400, Republic of Korea.

We identified a novel class 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 leading to the discovery of compound 27, which possessed excellent potency against wild-type HIV-1 (EC50 = 0.2 nM) as well as viruses bearing Y181C and K103N resistance mutations in the reverse transcriptase gene. The X-ray crystal structure of compound 27 complexed with wild-type reverse transcriptase confirmed the mode of action of this novel class of NNRTIs. Introduction of a chloro functional group in the pyrazole moiety dramatically improved hERG and CYP inhibition profiles, yielding highly promising leads for further development.

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