申请人:Wista Laboratories Ltd.
公开号:US07888350B2
公开(公告)日:2011-02-15
This invention pertains generally to the field of phenothiazine compounds, and more particularly to certain stably reduced phenothiazine compounds, specifically, certain 3,7 diamino-10H-phenothiazine (DAPTZ) compounds of the following formula wherein: each of R1 and R9 is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of R3NA and R3NB is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of R7NA and R7NB is independently selected from: —H; C1-4alkyl; C2-4alkenyl; and halogenated C1-4alkyl; each of HX1 and HX2 is independently a protic acid; and pharmaceutically acceptable salts, solvates, and hydrates thereof. These compounds are useful as drugs, for example, in the treatment of tauopathies, such as Alzheimer's disease, and also as prodrugs for the corresponding oxidized thioninium drugs (for example, methythioninium chloride, MTC).
本发明涉及苯并噻嗪化合物领域,更具体地涉及某些稳定还原的苯并噻嗪化合物,具体来说,涉及以下公式的某些3,7-二氨基-10H-苯并噻嗪(DAPTZ)化合物:
其中,R1和R9各自独立选择自:—H;C1-4烷基;C2-4烯基;和卤代C1-4烷基;R3NA和R3NB各自独立选择自:—H;C1-4烷基;C2-4烯基;和卤代C1-4烷基;R7NA和R7NB各自独立选择自:—H;C1-4烷基;C2-4烯基;和卤代C1-4烷基;HX1和HX2各自独立为质子酸;以及其药学上可接受的盐、溶剂和水合物。这些化合物可用作药物,例如,用于治疗tau病理,如阿尔茨海默病,同时也可作为相应氧化硫铵药物(例如甲硫铵盐,MTC)的前药。