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 R
1
and R
9
is independently selected from: —H; C
1-4
alkyl; C
2-4
alkenyl; and halogenated C
1-4
alkyl; each of R
3NA
and R
3NB
is independently selected from: —H; C
1-4
alkyl; C
2-4
alkenyl; and halogenated C
1-4
alkyl; each of R
7NA
and R
7NB
is independently selected from: —H; C
1-4
alkyl; C
2-4
alkenyl; and halogenated C
1-4
alkyl; each of HX
1
and HX
2
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, methylthioninium 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,具体而言,涉及以下式子的某些3,7-二
氨基-10H-苯并
噻嗪(DAPTZ)化合物:
其中:R1和R9各自独立地选择自:—H;C1-4烷基;C2-4烯基;和卤代的C1-4烷基;R3NA和R3NB各自独立地选择自:—H;C1-4烷基;C2-4烯基;和卤代的C1-4烷基;R7NA和R7NB各自独立地选择自:—H;C1-4烷基;C2-4烯基;和卤代的C1-4烷基;HX1和HX2各自独立地是质子酸;以及其药学上可接受的盐、溶剂化合物和
水合物。这些化合物可用作药物,例如,用于治疗tau蛋白病,如阿尔茨海默病,并且还可作为相应氧化
硫鎓药物(例如甲基
硫鎓盐酸盐,
MTC)的前药。