Discovery of a Slow Tight Binding LPA1 Antagonist (ONO-0300302) for the Treatment of Benign Prostatic Hyperplasia
作者:Masahiko Terakado、Hidehiro Suzuki、Kazuya Hashimura、Motoyuki Tanaka、Hideyuki Ueda、Keisuke Hirai、Masaki Asada、Masahiro Ikura、Naoki Matsunaga、Hiroshi Saga、Koji Shinozaki、Naoko Karakawa、Yuka Takada、Masashi Minami、Hiromu Egashira、Yoshihiro Sugiura、Masanori Yamada、Shinji Nakade、Yoshikazu Takaoka
DOI:10.1021/acsmedchemlett.7b00383
日期:2017.12.14
Scaffold hopping from the amide group of lead compound ONO 7300243 (1) to a secondary alcohol successfully gave a novel chemotype lysophosphatidic acid receptor 1 (LPA(1)) antagonist 4. Wash-out experiments using rat isolated urethra showed that compound 4 possesses a tight binding feature to the LPAI receptor. Further modification of two phenyl groups of 1 to pyrrole and an indane moiety afforded an optimized compound ONO-0300302 (19). Despite its high i.v. clearance, 19 inhibited significantly an LPA-induced increase of intraurethral pressure (IUP) in rat (3 mg/kg, p.o.) and dog (1 mg/kg, p.o.) over 12 h. Binding experiments with [H-3]-ONO-0300302 suggest that the observed long duration action is because of the slow tight binding character of 19.