申请人:Kawano Yoshikazu
公开号:US09051333B2
公开(公告)日:2015-06-09
The present invention provides a novel 6,7-dihydroimidazo[2,1-b][1,3]oxazine compound that has excellent bactericidal action against tubercle bacilli, multidrug-resistant tubercle bacilli, and atypical acid-fast bacilli. Specifically, the present invention provides a compound represented by Formula (1):
or a salt thereof,
wherein R1 represents tetrahydroisoquinolyl, tetrahydroquinolyl, tetrahydrobenzoazepinyl, benzoxazolyl, benzothiazolyl, indolyl, isoindolinyl, naphthyl, quinolyl, phenyl, biphenylyl, or pyridyl, these groups being optionally substituted, the phenyl, biphenylyl, and pyridyl represented by R1 each being substituted directly or via a linker with at least one group selected from the group consisting of tetrahydropyridyl, diazepanyl, diazabicycloheptanyl, tetrahydrotriazolopyrazinyl, tetrahydroimidazopyrazinyl, azabicyclooctanyl, oxazolyl, piperazinyl, piperidyl, thiazolyl, and the like, each of these groups being optionally substituted; and R2 represents hydrogen or lower alkyl. The present invention further provides a pharmaceutical composition containing the above.
本发明提供了一种新型的6,7-二氢
咪唑[2,1-b][1,3]噁嗪化合物,具有对结核分枝杆菌、多重耐药结核分枝杆菌和非典型酸性革兰氏阳性杆菌的优异杀菌作用。具体而言,本发明提供了下式(1)表示的化合物或其盐,其中R1表示
四氢异喹啉基、
四氢喹啉基、四氢苯并氮杂环庚基、苯并
噁唑基、
苯并噻唑基、
吲哚基、
异吲哚啉基、
萘基、
喹啉基、苯基、
联苯基或
吡啶基,这些基团可以选择性地被取代,其中由R1表示的苯基、
联苯基和
吡啶基可以通过连接基直接或经过至少选择自四氢
吡啶基、二氮杂环庚基、二
氮杂双环庚基、四氢三唑
吡嗪基、四氢
咪唑吡嗪基、
氮杂双环辛基、
噁唑基、
哌嗪基、
哌啶基、
噻唑基等基团中至少一个取代基进行取代;R2表示氢或低碳基。本发明还提供了包含上述化合物的药物组合物。