The present invention relates to a carboxylic acid compound of formula (I):
wherein R
1
is H, alkyl; m is 2, 3; n is 0-2; R
2
is phenyl, naphthyl, benzofuran, benzothiophene; Q is —CH
2
—O-Cyc1, —CH
2
-Cyc2, -L-Cyc3; R
3a
and R
3b
each independently is hydrogen, alkyl or taken together form tetrahydro-2H-pyran; a pharmaceutically acceptable salt thereof, a method for producing a process of the preparation thereof and a pharmaceutical agent comprising the same as an active ingredient. The compound of formula (I) have an antagonizing activity against PGE
2
receptor, specifically EP
3
receptor which is subtype thereof, and are useful for the prevention and/or treatment of itching, pain, urinary disturbance or stress disease.
本发明涉及一种
化学式(I)的
羧酸化合物:其中,R1为H,烷基;m为2,3;n为0-2;R2为苯基,
萘基,
苯并呋喃基,
苯并噻吩基;Q为—
CH2—O-Cyc1,— -Cyc2,-L-Cyc3;R3a和R3b各自独立地为氢,烷基或共同形成四氢-
2H-吡喃基;其药学上可接受的盐,制备方法及其作为活性成分的制药剂。化合物(I)具有对
PGE2受体的拮抗活性,特别是其亚型EP3受体,并且对于预防和/或治疗瘙痒,疼痛,尿路障碍或压力性疾病有用。