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浙江大学学报(医学版)  2012, Vol. 41 Issue (6): 639-646    DOI: 10.3785/j.issn.1008-9292.2012.06.006
专题报道     
盐酸贝那普利多晶型的制备和表征
方红,胡秀荣,顾建明,陈关喜,冯建跃,汤谷平
浙江大学化学系,浙江 杭州 310027
Preparation and characterization of Forms A and B of benazepril hydrochloride
FANG Hong,HU Xiu-rong,GU Jian-ming,CHEN Guan-xi,FENG Jian-yue,TANG Gu-ping
Department of Chemistry,Zhejiang University,Hangzhou 310027,China
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摘要: 目的:获得制备盐酸贝那普利两种晶型——A晶型和B晶型的制备工艺,研究不同晶型的盐酸贝那普利在红外光谱、热稳定性和晶体结构上的差异,探讨两种晶型的转晶条件及稳定性关系。
方法:用傅里叶红外光谱(IR)、热重(TG)、差示扫描量热法(DSC)、X射线粉末衍射(PXRD)、X射线单晶衍射(SCXRD)等分析手段,对盐酸贝那普利A晶型和B晶型分别进行表征研究。
结果:获得了A晶型和B晶型的制备工艺、晶体结构及晶体稳定性。晶体结构分析表明,A晶型属单斜晶系,空间群P21,晶胞参数a=7.8655(4),b=11.7700(6),c=13.5560(7),β=102.9470(10)°,晶胞体积V=1223.07(11)3,晶胞内分子数Z=2。B晶型属正交晶系,空间群P212121,晶胞参数a=7.9353(8),b=11.6654(11),c=26.6453(16),晶胞体积V=2466.5(4)3,晶胞内分子数Z=4。从DSC和XRD结果表明B晶型热处理后会转变成A晶型。
结论:盐酸贝那普利A晶型和B晶型都是无水晶型,是分子构型不同产生的多晶型,A晶型的高温稳定性优于B晶型。
关键词: 苯丙氮卓艹类/化学合成 苯丙氮卓艹类/化学 药物稳定性 盐酸贝那普利 多晶型 表征    
Abstract: Objective: To prepare Form A and Form B of benazepril hydrochloride and to compare the differences in spectrums,thermodynamics and crystal structure between two polymorphic forms.
Methods: Form A and Form B of benazepril hydrochloride were characterized by Fourier transform infrared spectroscopy (IR),thermal gravimetric analysis (TG),differential scanning calorimetry (DSC),powder x-ray diffraction (PXRD) and single crystal x-ray diffraction (SCXRD).
Results: Preparation method,crystal structure and polymorphic stability of Form A and Form B of benazepril hydrochloride were obtained.Based on the analysis of crystal structure of both polymorphs,Form A belonged to monocline space group P21 with a=7.8655(4),b= 11.7700(6),c= 13.5560(7),β= 102.9470(10)°,V=1223.07(11)3 and Z=2,while Form B belonged to orthorhombic space group P212121,with a=7.9353(8),b=11.6654(11),c=26.6453(16),V=2466.5(4)3 and Z=4.From the DSC and XRD results,Form B of benazepril hydrochloride could be transformed into Form A after heating treatment.
Conclusions: Form A and Form B of benazepril hydrochloride are both anhydrous and displayed different polymorphs due to different molecular configuration.Furthermore,Form A exhibits more stable than Form B at high temperatures.
Key words: Benzazepines/chemical synthesis    Benzazepines/chemistry    Drug stability    Benazepril hydrochloride    Polymorphism    Characterization
出版日期: 2012-11-25
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方红;胡秀荣;顾建明;陈关喜;冯建跃;汤谷平. 盐酸贝那普利多晶型的制备和表征[J]. 浙江大学学报(医学版), 2012, 41(6): 639-646.

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https://www.zjujournals.com/med/CN/Y2012/V41/I6/639

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