申请人:Takeda Chemical Industries, Ltd.
公开号:EP0402903A1
公开(公告)日:1990-12-19
There is provided an improved process for producing novel compounds represented by the general formula:
wherein the ring Ⓐ a pyrrole ring which may be hydrogenated; X represents an amino, hydroxyl or mercapto group R¹, R² and R³ each, being the same as or different from the other, represents hydrogen or an alkyl, alkenyl or alkynyl group which may be substituted: R⁴ represents OR⁵ wherein R⁵ represents hydrogen or a hydrocarbon group which may be substituted or NHCH(COOR⁶)CH₂CH₂COOR⁷ wherein R⁶ and R⁷ each represents hydrogen or a hydrocarbon group which may be substituted; and n represents an integer of 1 to 4, or a salt thereof from compounds represented by the general formula:
wherein X, R¹, R², R³, R⁴ and n are the same as defined above; Y¹ and Y² each represents oxygen or sulfur atom; R⁸ and R⁹ each, being the same as or different from the other, represents a hydrocarbon group which may be substituted, or salts thereof by an intramolecular ring closure reaction ot form a pyrrolopyrimidine ring and, if necessary, reducing pyrrole ring thus formed to pyrroline ring. The compound are useful as antitumor agents.
本发明提供了一种生产通式所代表的新型化合物的改进工艺:
其中环Ⓐ为可氢化的吡咯环;X代表氨基、羟基或巯基 R¹、R²和R³各自相同或不同地代表氢或可被取代的烷基、烯基或炔基:R⁴ 代表 OR⁵,其中 R⁵ 代表氢或可被取代的烃基或 NHCH(COOR⁶)CH₂CH₂COOR⁷,其中 R⁶ 和 R⁷ 各自代表氢或可被取代的烃基;以及 n 代表 1 至 4 的整数,或通式所代表化合物的盐:
其中,X、R¹、R²、R³、R⁴ 和 n 与上述定义相同;Y¹ 和 Y² 各自代表氧原子或硫原子;R⁸ 和 R𠞙 各自代表可被取代的烃基,或其盐通过分子内封环反应形成吡咯并嘧啶环,必要时将由此形成的吡咯环还原为吡咯啉环。这些化合物可用作抗肿瘤药物。