Condensed pyrazole derivatives, method of manufacturing the same, and androgen inhibitor
申请人:OTSUKA PHARMACEUTICAL CO., LTD.
公开号:EP0594149A2
公开(公告)日:1994-04-27
This invention provides a condensed pyrazole derivative of the Formula (1) :
(where A denotes CH or N, RO and R3 denote same or different, a hydrogen atom or a lower alkyl group, R1 and R2 denote same or different, a hydrogen atom, a lower alkyl group, a lower alkoxy group, a lower alkylthio group, a nitro group or a halogen atom, m denotes 1 or 2, and n denotes 1, 2 or 3, provided that, when n is 2, two R2 may be connected to each other to form a lower alkylenedioxy group), or its pharmaceutically acceptable salt. This derivative or its salt is excellent in the effect of inhibiting the expression of action of androgen, thereby being excellent in therapeutical effect of benign prostatic hypertrophy, prostatic carcinoma, etc., and has a long lasting of efficacy and high oral absorption.
本发明提供了一种式(1)的缩合吡唑衍生物:
(其中A表示CH或N,RO和R3表示相同或不同的氢原子或低级烷基,R1和R2表示相同或不同的氢原子、低级烷基、低级烷氧基、低级烷硫基、硝基或卤素原子,m表示1或2,n表示1、2或3,但当n为2时,两个R2可相互连接形成低级烷二氧基),或其药学上可接受的盐。该衍生物或其盐具有良好的抑制雄激素作用表达的效果,从而对良性前列腺肥大、前列腺癌等具有良好的治疗效果,且药效持久,口服吸收率高。