(+)-3-[[(4-FLUOROPHENYL)SULFONYL]METHYLAMINO]-1,2,3,4-TETRAHYDRO-9H-CARBAZOLE-9-ACETIC ACID

TM30089 is a ramatroban analog and an orally active, high-affinity, potent and selective prostaglandin D2 receptor 2 (DP2; CRTH2) antagonist (Ki = 0.6 nM/hDP2 against 1.2 nM PGD2; Ki = 1.2 μM/hDP1 against 0.5 nM PGD2, >10 μM/hTP against 5 nM SQ29548) th at blocks PGD2-induced responses in hDP2 transfectants (IP1/βarr IC50 = 1.2/3.0 nM) and exhibits in vivo efficacy in a murine model of renal tubulointerstitial fibrosis (20 mg/kg b.i.d. p.o., starting 4 days before or 3 days after unilateral ureteral obstruction/UUO).