950688-14-9

Timapiprant, also known as OC000459, is a potent, selective and orally active CRTH2 antagonist. OC000459 reduces nasal and ocular symptoms in allergic subjects exposed to grass pollen, a randomised, placebo-controlled, double-blind trial. OC000459 inhibits mast cell-dependent activation of T helper 2 lymphocytes and eosinophils. OC000459 treatment inhibited LAR and post-allergen increase in sputum eosinophils. OC000459 appears to inhibit allergic inflammation in asthma.

Timapiprant sodium (OC000459 sodium) 是一种高效选择性的口服型 D 前列腺素受体 2 (DP2，也称为 CRTH2) 拮抗剂。Timapiprant sodium (OC000459 sodium) 有效地置换来自人重组 DP2 (K i=13 nM)，大鼠重组 DP2 ( K i=3 nM) 和人天然 DP2 ( K i=4 nM) 的 [3H] PGD2。 Timapiprant sodium (OC000459 sodium) 抑制肥大细胞激活 Th2 淋巴细胞和嗜酸性粒细胞。