Discovery of Gemilukast (ONO-6950), a Dual CysLT<sub>1</sub> and CysLT<sub>2</sub> Antagonist As a Therapeutic Agent for Asthma
作者:Satoshi Itadani、Kentaro Yashiro、Yoshiyuki Aratani、Tetsuya Sekiguchi、Atsushi Kinoshita、Hideki Moriguchi、Nobukazu Ohta、Shinya Takahashi、Akiharu Ishida、Yohei Tajima、Katsuya Hisaichi、Masaki Ima、Junya Ueda、Hiromu Egashira、Tomohiko Sekioka、Michiaki Kadode、Yasuo Yonetomi、Takafumi Nakao、Atsuto Inoue、Hiroaki Nomura、Tetsuya Kitamine、Manabu Fujita、Takeshi Nabe、Yoshiyuki Yamaura、Naoya Matsumura、Akira Imagawa、Yoshisuke Nakayama、Jun Takeuchi、Kazuyuki Ohmoto
DOI:10.1021/acs.jmedchem.5b00741
日期:2015.8.13
An orally active dual CysLT(1) and CysLT(2) antagonist possessing a distinctive structure which consists of triple bond and dicarboxylic acid moieties is described. Gemilukast (ONO-6950) was generated via isomerization of the core indole and the incorporation of a triple bond into a lead compound. Gemilukast exhibited antagonist activities with IC50 values of 1.7 and 25 nM against human CysLT(1) and human CysLT(2), respectively, and potent efficacy at an oral dose of 0.1 mg/kg given 24 h before LTD4 challenge in a CysLT(1)-dependent guinea pig asthmatic model. In addition, gemilukast dose-dependently reduced LTC4-induced bronchoconstriction in both CysLT(1)- and CysLT(2)-dependent guinea pig asthmatic models, and it reduced antigen-induced constriction of isolated human bronchi. Gemilukast is currently being evaluated in phase II trials for the treatment of asthma.