机构地区:[1]School of Bioscience and Bioengineering,South China University of Technology
出 处:《Chinese Journal of Structural Chemistry》2016年第11期1645-1654,共10页结构化学(英文)
基 金:supported by the Guangdong Department of Science and Technology(2012A080800002 and 2015A020211005)
摘 要:Three new vortioxexine (VOT) salts with salicylic acid (SA), 5-fluorouracil (FU) and (p-nitrophenyl)-acetic acid (PA) have been synthesized and characterized in detail. In VOT-SA(1:1), the protonated VOT and deprotonated salicylic anion form a tetrameric unit with the R4 4(12) synthon via N(1)–H(1)…O(1)^a (a: x–1, y, z) and N(1)–H(2)…O(2)^b (b: –x, –y, –z+1) hydrogen bonds. However, in VOT–FU(1:2), the protonated VOT and deprotonated 5-fluorouracil anion feature an R4 4(16) ring motif via N(1)–H(1)…O(2)^c (c: –x+1, –y+1, –z+1) and N(1)– H(2)…O(1)^d (d: x, y–1, z) hydrogen bonds. The neutral FU extends the R4 4(16) ring to form a two-dimensional structure through R2 2(8) N–H…O and N(6)–H(4)…N(4)……e (e: –x+1, y–1/2, –z+1/2) hydrogen bonds. In VOT-PA(1:1), PA molecules are linked through N(1)–H(1)…O(1)f (f: –x+1, y+1/2, –z+1) and N(1)–H(2)…O(2), which forms a right-handed helical structure. Furthermore, components of the crystalline phase have also been investigated in terms of their corresponding Hirshfeld surface, and the salification improves the equilibrium solubilities and dissolution rates of VOT in three salts at 25 ℃ in water.Three new vortioxexine (VOT) salts with salicylic acid (SA), 5-fluorouracil (FU) and (p-nitrophenyl)-acetic acid (PA) have been synthesized and characterized in detail. In VOT-SA(1:1), the protonated VOT and deprotonated salicylic anion form a tetrameric unit with the R4 4(12) synthon via N(1)–H(1)…O(1)^a (a: x–1, y, z) and N(1)–H(2)…O(2)^b (b: –x, –y, –z+1) hydrogen bonds. However, in VOT–FU(1:2), the protonated VOT and deprotonated 5-fluorouracil anion feature an R4 4(16) ring motif via N(1)–H(1)…O(2)^c (c: –x+1, –y+1, –z+1) and N(1)– H(2)…O(1)^d (d: x, y–1, z) hydrogen bonds. The neutral FU extends the R4 4(16) ring to form a two-dimensional structure through R2 2(8) N–H…O and N(6)–H(4)…N(4)……e (e: –x+1, y–1/2, –z+1/2) hydrogen bonds. In VOT-PA(1:1), PA molecules are linked through N(1)–H(1)…O(1)f (f: –x+1, y+1/2, –z+1) and N(1)–H(2)…O(2), which forms a right-handed helical structure. Furthermore, components of the crystalline phase have also been investigated in terms of their corresponding Hirshfeld surface, and the salification improves the equilibrium solubilities and dissolution rates of VOT in three salts at 25 ℃ in water.
关 键 词:vortioxetine crystal structure Hirshfeld surface equilibrium solubility powder dissolution
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