申请人:Astellas Pharma Inc.
公开号:EP3150581A1
公开(公告)日:2017-04-05
The problem to be solved by the present invention is to provide a compound suitable for a pharmaceutical composition, specifically a pharmaceutically composition for treating nocturia.
The inventors have assumed that inhibition of nocturnal activity of placental leucine aminopeptidase (P-LAP), i.e. aminopeptidase that cleaves AVP, would maintain and/or increase an endogenous AVP level to enhance the antidiuretic effect, which would contribute to a decreased number of nocturnal voids, and have extensively studied compounds which inhibit P-LAP.
As a result, the inventors have found that (2R)-3-amino-2-[4-(substituted pyridine)-2-yl]methyl}-2-hydroxy-propanoic acid derivatives have excellent P-LAP inhibitory activity. The inventors have evaluated antidiuretic effects in water-loaded rats and have found that the compounds increase endogenous AVP levels by inhibiting P-LAP and consequently reduce urine production. The present invention therefore provides compounds expected to be used as an agent for treating nocturia based on P-LAP inhibition.
本发明要解决的问题是提供一种适用于药物组合物的化合物,特别是一种用于治疗夜尿症的药物组合物。
本发明者假定,抑制胎盘亮氨酸氨肽酶(P-LAP)(即裂解 AVP 的氨肽酶)的夜间活性将维持和/或增加内源性 AVP 水平,从而增强抗利尿作用,这将有助于减少夜间排尿次数,并对抑制 P-LAP 的化合物进行了广泛研究。
结果,本发明人发现(2R)-3-氨基-2-[4-(取代的吡啶)-2-基]甲基}-2-羟基丙酸衍生物具有极佳的 P-LAP 抑制活性。本发明者评估了水负荷大鼠的抗利尿作用,发现这些化合物通过抑制 P-LAP 增加了内源性 AVP 水平,从而减少了尿量。因此,本发明提供的化合物有望用作基于 P-LAP 抑制作用的夜尿症治疗剂。