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首页> 外文期刊>Acta crystallographica. Section C, Structural chemistry. >The design of novel metronidazole benzoate structures: exploring stoichiometric diversity
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The design of novel metronidazole benzoate structures: exploring stoichiometric diversity

机译:新型甲硝唑苯甲酸酯结构的设计:探索化学计量多样性

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The use of supramolecular synthons as a strategy to control crystalline structure is a crucial factor in developing new solid forms with physicochemical properties optimized by design. However, to achieve this objective, it is necessary to understand the intermolecular interactions in the context of crystal packing. The feasibility of a given synthon depends on its flexibility to combine the drug with a variety of coformers. In the present work, the imidazole–hydroxy synthon is investigated using as the target molecule benzoylmetronidazole [BZMD; systematic name 2‐(2‐methyl‐5‐nitro‐1 H ‐imidazol‐1‐yl)ethyl benzoate], whose imidazole group seems to be a suitable acceptor for hydrogen bonds. Thus, coformers with carboxylic acid and phenol groups were chosen. According to the availability of binding sites presented in the coformer, and considering the proposed synthon and hydrogen‐bond complementarity as major factors, different drug–coformer stoichiometric ratios were explored (1:1, 2:1 and 3:1). Thirteen new solid forms (two salts and eleven cocrystals) were produced, namely BZMD–benzoic acid (1/1), C 13 H 13 N 3 O 4 ·C 7 H 6 O 2 , BZMD–β‐naphthol (1/1), C 13 H 13 N 3 O 4 ·C 10 H 8 O, BZMD–4‐methoxybenzoic acid (1/1), C 13 H 13 N 3 O 4 ·C 8 H 8 O 3 , BZMD–3,5‐dinitrobenzoic acid (1/1), C 13 H 13 N 3 O 4 ·C 7 H 4 N 2 O 6 , BZMD–3‐aminobenzoic acid (1/1), C 13 H 13 N 3 O 4 ·C 7 H 7 NO 2 , BZMD–salicylic acid (1/1), C 13 H 13 N 3 O 4 ·C 7 H 6 O 3 , BZMD–maleic acid (1/1) {as the salt 1‐[2‐(benzoyloxy)ethyl]‐2‐methyl‐5‐nitro‐1 H ‐imidazol‐3‐ium 3‐carboxyprop‐2‐enoate}, C 13 H 14 N 3 O 4 + ·C 4 H 3 O 4 ? , BZMD–isophthalic acid (1/1), C 13 H 13 N 3 O 4 ·C 8 H 6 O4, BZMD–resorcinol (2/1), 2C 13 H 13 N 3 O 4 ·C 6 H 6 O 2 , BZMD–fumaric acid (2/1), C 13 H 13 N 3 O 4 ·0.5C 4 H 4 O 4 , BZMD–malonic acid (2/1), 2C 13 H 13 N 3 O 4 ·C 3 H 2 O 4 , BZMD–2,6‐dihydroxybenzoic acid (1/1) {as the salt 1‐[2‐(benzoyloxy)ethyl]‐2‐methyl‐5‐nitro‐1 H ‐imidazol‐3‐ium 2,6‐dihydroxybenzoate}, C 13 H 14 N 3 O 4 + ·C 7 H 5 O 4 ? , and BZMD–3,5‐dihydroxybenzoic acid (3/1), 3C 13 H 13 N 3 O 4 ·C 7 H 6 O 4 , and their crystalline structures elucidated, confirming the robustness of the selected synthon.
机译:使用超分子合成酮作为控制晶体结构的策略是开发新的固体形式具有通过设计优化的物理化学特性的关键因素。然而,为了实现这一目标,有必要了解晶体包装背景下的分子间相互作用。给定合成合成的可行性取决于其与各种共焦制组合药物的灵活性。在本作工作中,使用作为靶分子苯甲酰基聚苯唑(BZMD)研究咪唑 - 羟基合成酮[BZMD;系统名称2-(2-甲基-5-硝基-1-咪唑-1-基)乙酯,其咪唑基似乎是氢键的合适受体。因此,选择具有羧酸和酚基团的共焦型。根据COFORMER中呈现的结合位点的可用性,并且考虑到所提出的合成酮和氢键互补性作为主要因素,探讨了不同的药物 - 联合体化学计量比(1:1,2:1和3:1)。制备13种新的固体形式(两种盐和十一碳酸盐),即BZMD-苯甲酸(1/1),C 13 H 13 N 3 O 4·C 7 H 6 O 2,BZMD-β-萘酚(1/1 ),C 13 H 13 N 3 O 4·C 10 H 8 O,BZMD-4-甲氧基苯甲酸(1/1),C 13 H 13 N 3 O 4·C 8 H 8 O 3,BZMD-3,5 - 二硝基苯甲酸(1/1),C 13 H 13 N 3 O 4·C 7 H 4 N 2 O 6,BZMD-3-氨基苯甲酸(1/1),C 13 H 13 N 3 O 4·C 7 H 7 NO 2,BzMD-水杨酸(1/1),C 13 H 13 N 3 O 4·C 7 H 6 O 3,BZMD-马来酸(1/1){作为盐1- [2-(苯甲酰氧基)乙基] -2-甲基-5-硝基-1h-inimidazol-3-Ium 3-羧基脯-2-烯酸盐},C 13 H 14 N 3 O 4 +·C 4 H 3 O 4? ,BZMD-间邻苯二甲酸(1/1),C 13 H 13 N 3 O 4·C 8 H 6 O4,BZMD-FRORORCINOL(2/1),2C 13 H 13 N 3 O 4·C 6 H 6 O 2 ,BZMD-富马酸(2/1),C 13 H 13 N 3 O 4·0.5℃4 H 4 O 4,BZMD-丙酸(2/1),2℃13 H 13 N 3 O 4·C 3 H. 2 O 4,BZMD-2,6-二羟基苯甲酸(1/1){作为盐1- [2-(苯甲酰氧基)乙基] -2-甲基-5-硝基-1H-Mimidazol-3-Ium 2, 6-二羟基苯甲酸盐},C 13 H 14 N 3 O 4 +·C 7 H 5 O 4? ,BZMD-3,5-二羟基苯甲酸(3/1),3C 13 H 13 N 3 O 4·C 7 H 6 O 4,及其结晶结构阐明,确认所选合成酮的鲁棒性。

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