首页>
外国专利>
A PROCESS FOR PREPARING PYRAZOLOPYRIMIDINONE DERIVATIVES FOR THE TREATMENT OF IMPOTENCE.
A PROCESS FOR PREPARING PYRAZOLOPYRIMIDINONE DERIVATIVES FOR THE TREATMENT OF IMPOTENCE.
展开▼
机译:一种用于治疗阳IMP的吡咯并酮嘧啶酮衍生物的制备方法。
展开▼
页面导航
摘要
著录项
相似文献
摘要
The present invention relates to the method for preparing pyrazolopyrimidinone derivatives and their pharmaceutically acceptable salts having efficacy on the treatment of impotence, one of male sexual dysfunctions. The method according to the present invention comprises the steps of chlorosufonation the pyrazolamide, followed by amination with amine and intramolecular cyclization. The method provides the pyrazolopyrimidinone derivatives and their pharmaceutically acceptable salts with high yield and in an economic manner.
展开▼