| 摘要 |
PROBLEM TO BE SOLVED: To provide novel CRTH2 receptor antagonists.SOLUTION: This invention relates to a compound having condensed heterocycles in its basic skeleton, specifically (±)-{2-Chloro-8-[(4-fluoro-benzenesulfonyl)-methyl-amino]-6,7,8,9-tetrahydro-pyrido[3,2-b]indolizin-5-yl}-acetic acid, or (±)-{8-[(4-Fluoro-benzenesulfonyl)-methyl-amino]-6,7,8,9-tetrahydro-pyrido[3,2-b]indolizin-5-yl}-acetic acid. |
