Physicochemical aspects and comparative analysis of Voxelotor and its salt and cocrystal
作者:Uday Kumar Neelam、Bhatraju Daveedu、Vekariya Nagaji Ambabhai、Mahender Rao Siripragada、Satyasree Rajendra kumar、Sridhar Balasubramanian
DOI:10.1016/j.molstruc.2022.134024
日期:2023.1
all three structures, the VOX molecules exhibit an intramolecular S(6)-motif formed by O-H⋅⋅⋅O hydrogen bond. In VOX free base, only weak C-H⋅⋅⋅O, C-H⋅⋅⋅π and π⋅⋅⋅π interactions were observed, which lead to the formation of two-dimensional hydrogen-bonded sheets. In VOX-HCl salt, N-H⋅⋅⋅Cl hydrogen bond along with the C-H⋅⋅⋅π and π⋅⋅⋅π interactions form a discrete dimeric unit. In VOX-SC cocrystal,
Voxelotor (VOX) 是 BCS(生物制药分类系统)II 类药物(溶解性差,渗透性高),发行用于治疗镰状细胞病。将VOX 游离碱、VOX-HCl 盐和琥珀酸(VOX-SC) 共晶结晶并通过单晶X 射线衍射技术(SCXRD) 确定它们的晶体结构。此外,还进行了诸如核磁共振(NMR)和傅里叶变换红外光谱(FT-IR)等固态表征技术。在所有三种结构中,VOX 分子都表现出由 OH···O 氢键形成的分子内 S(6)-基序。在VOX游离碱中,仅观察到较弱的CH···O、CH···π和π···π相互作用,导致二维氢键片的形成。在VOX-HCl盐中,NH⋅⋅⋅Cl 氢键与 CH⋅⋅⋅π 和 π⋅⋅⋅π 相互作用形成一个离散的二聚体单元。在VOX-SC共晶中,VOX和SC分子通过NH···O、OH···O和CH···O相互作用连接,形成二维氢键网络。VOX-SC 共晶的热分析导致熔点介于 API