上下游产品
西地那非杂质 5-(2-Hydroxyphenyl)-1-Methyl-3-Propyl-1,6-Dihydro-7H-Pyrazolo[4,3-D]Pyrimidin-7-One 139756-26-6📜西地那非杂质置于氯磺酸体系中,用75%的收率获得去甲哌嗪基去乙基西地那非磺酰氯
参考文献:Method Of Treating A Patient Having Precancerous Lesions With Phenyl Purinone Derivatives
标题:Method Of Treating A Patient Having Precancerous Lesions With Phenyl Purinone Derivatives
摘要:苯基嘌呤酮衍生物对于治疗患有癌前病变的患者非常有用.这些化合物还可用于抑制肿瘤细胞的生长.
海关参考信息
- 2908199090-其他酚的卤化衍生物
2908999090-其他酚的硝化衍生物
2918290000-其他含酚基羧酸
2901100000-饱和无环烃 - 💡 提示:海关信息按照顺序优先匹配,如需确认的海关信息,请参考相关资料。
- 详情请参考:📖 海关编码查询和海关进出口税则
专利信息
专利号:US-5719283-A
优先权日:1990-06-20
标 题:Intermediates useful in the synthesis of pyrazolopyrimidinone antianginal agents
发明人:BELL ANDREW SIMON; BROWN DAVID; TERRETT NICHOLAS KENNETH
权利人:PFIZER
摘要:Compounds of the formula ##STR1## wherein R 1 is H, C 1 -C 3 alkyl, C 3 -C 5 cycloalkyl or C 1 -C 3 perfluoroalkyl; n R 2 is H, C 1 -C 6 alkyl optionally substituted by OH, C 1 -C 3 alkoxy or C 3 -C 6 cycloalkyl, or C 1 -C 3 perfluoroalkyl; n R 3 is H, C 1 -C 6 alkyl, C 3 -C 6 alkenyl, C 3 -C 6 alkynyl, C 3 -C 7 cycloalkyl, C 1 -C 6 perfluoroalkyl or (C 3 -C 6 cycloalkyl)C 1 -C 6 alkyl; n and Y is chloro, bromo, or fluoro. n The above compounds are intermediates useful in the synthesis of certain pyrazolopyrimidinones which inhibit cyclic guanosine 3', 5'-monophosphate phosphodiesterase.