申请人:Hoffmann-La Roche Inc.
公开号:US05399712A1
公开(公告)日:1995-03-21
The invention relates to a process for the manufacture of substituted maleimides of the formula ##STR1## wherein R.sup.1 is alkyl, aryl or heteroaryl and R.sup.2 is hydrogen, alkyl, alkoxycarbonyl, aryl or heteroaryl, by reacting an activated glyoxylate of the formula ##STR2## wherein R.sup.1 has the above significance and X is a leaving atom or group, with an imidate of the formula ##STR3## wherein R.sup.2 has the above significance, R.sup.3 is alkyl, aryl or trialkylsilyl and Y is oxygen or sulfur, in the presence of a base and, after treating the resulting reaction product obtained in which R.sup.2 is hydrogen or alkyl with a strong base, hydrolyzing and dehydrating the resulting hydroxy-pyrrolinone of the formula ##STR4## wherein R.sup.1, R.sup.2, R.sup.3 and Y have the above significance. The substituted maleimides of formula I are pharmacologically active, for example as protein kinase C inhibitors and which a useful, for example, in the treatment and prophylaxis of inflammatory, immunological, bronchopulmonary and cardiovascular disorders, or as antiproliferative agents useful, for example, in the treatment of immune diseases and allergic disorders.
本发明涉及一种制备式为##STR1##的取代马来酰亚胺的方法,其中R.sup.1是烷基、芳基或杂芳基,R.sup.2是氢、烷基、烷氧羰基、芳基或杂芳基,通过将式为##STR2##的活化乙二酸酯(其中R.sup.1具有上述含义,X是一个离去基团)与式为##STR3##的亚胺(其中R.sup.2具有上述含义,R.sup.3是烷基、芳基或三烷基硅基,Y是氧或硫)在碱的存在下反应,然后将得到的反应产物(其中R.sup.2为氢或烷基)用强碱处理后,水解和脱水生成式为##STR4##的羟基吡咯烷酮,其中R.sup.1、R.sup.2、R.sup.3和Y具有上述含义。式I的取代马来酰亚胺具有药理活性,例如作为蛋白激酶C抑制剂,可用于治疗和预防炎症、免疫、支气管肺和心血管疾病,或作为抗增殖剂,可用于治疗免疫性疾病和过敏性疾病。