Optimization of sulfonamide derivatives as highly selective EP1 receptor antagonists |
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Authors: | Naganawa Atsushi Matsui Toshiaki Ima Masaki Yoshida Koji Tsuruta Hiroshi Yamamoto Shingo Yamamoto Hiroshi Okada Hiroki Maruyama Takayuki Nakai Hisao Kondo Kigen Toda Masaaki |
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Institution: | Minase Research Institute, Ono Pharmaceutical Co., Ltd, Shimamoto, Mishima, Osaka 618-8585, Japan. naganawa@ono.co.jp |
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Abstract: | A series of 4-(2-{isobutyl(5-methyl-2-furyl)sulfonyl]amino}phenoxy)methyl]benzoic acids and 4-({2-isobutyl(1,3-thiazol-2-ylsulfonyl)amino]phenoxy}methyl)benzoic acids were synthesized and evaluated for their EP receptor affinities and EP1 receptor antagonist activities. Further structural optimization was carried out to reduce inhibitory activity against hepatic cytochrome P450 isozymes, which could represent a harmful potential drug interaction. Selected compounds were also evaluated for their binding affinities to hTP, hDP, mFP, and hIP, and for their hEP1 receptor antagonist activities. The results of structure-activity relationship studies are also presented. |
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