Article(id=1198656223894667783, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1198656209390764948, articleNumber=null, orderNo=null, doi=10.16438/j.0513-4870.2023-0268, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1678032000000, receivedDateStr=2023-03-06, revisedDate=1685030400000, revisedDateStr=2023-05-26, acceptedDate=null, acceptedDateStr=null, onlineDate=1763711513732, onlineDateStr=2025-11-21, pubDate=1697040000000, pubDateStr=2023-10-12, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1763711513732, onlineIssueDateStr=2025-11-21, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1763711513732, creator=13701087609, updateTime=1763711513732, updator=13701087609, issue=Issue{id=1198656209390764948, tenantId=1146029695717560320, journalId=1189982191388893191, year='2023', volume='58', issue='10', pageStart='2835', pageEnd='3150', issueExtLink='null', onlineDate='null', pubDate='1697040000000', pubDateStr='2023-10-12', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1763711510274, creator='13701087609', updateTime=1763711659007, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1198656833280897539, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1198656209390764948, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1198656833280897540, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1198656209390764948, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=3116, endPage=3122, ext={EN=ArticleExt(id=1198656224267960870, articleId=1198656223894667783, tenantId=1146029695717560320, journalId=1189982191388893191, language=EN, title=Preparation, crystal structure and thermostability of nirmatrelvir polymorphs, columnId=null, journalTitle=Acta Pharmaceutica Sinica, columnName=null, runingTitle=null, highlight=null, articleAbstract=
The polymorphism and thermostability of nirmatrelvir, the main antiviral component of the oral COVID-19 treatment drug, were studied. Four polymorphs of nirmatrelvir were prepared by recrystallization methods. Among them, Form 1 and nirmatrelvir methyl tert-butyl ether solvate (Form 2) had been reported in the literature, while nirmatrelvir isobutyl acetate solvate (NMTW-IBAC) and nirmatrelvir ethyl acetate solvate (NMTW-EA) are two new solvates. The crystal structures were characterized by single-crystal X-ray diffraction, powder X-ray diffraction, thermogravimetric analysis and differential scanning calorimetry. The thermostability of polymorphism and crystalline transformation were also investigated by combining Hirshfeld surface analysis and interaction energy analysis. The results showed that nirmatrelvir Form 1 belongs orthorhombic crystal system with the space group P212121 and one nirmatrelvir molecule included in the asymmetric unit, which has the same crystal structure as nirmatrelvir Form 4 reported in the literature. Owing to its larger thermal expansion, the differences in crystallographic parameters obtained at different temperatures were found between Form 1 and Form 4. Three solvates of nirmatrelvir belonged to the iso-structural with monoclinic crystal system and the space group P21, in which the asymmetric unit contains one nirmatrelvir molecule and one solvent molecule. The thermal analysis results showed that nirmatrelvir Form 1 was a solvent-free crystal form with the best thermal stability and the strongest intermolecular hydrogen bonding. Among the three solvates, NMTW-EA has the worst thermal stability and the weakest hydrogen bonding interaction between the nirmatrelvir molecule and the solvent molecule. The energy framework of nirmatrelvir solvates showed that the closer the arrangement between solvent and nirmatrelvir molecules, the greater the total interaction energy between solvent and nirmatrelvir molecules. The phase transition studies of the three solvates showed that NMTW-IBAC and NMTW-EA were transformed into amorphous after desolvation, respectively, while Form 2 undergoes oiling during desolvation. The research provides theoretical guidance for the analysis, identification and quality control of nirmatrelvir polymorphs.
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本文对口服新冠病毒肺炎治疗药的主要抗病毒成分奈玛特韦进行了晶型和热稳定性研究。采用重结晶的方法进行奈玛特韦多晶型制备研究, 制备得到了四种晶型, 其中晶型1 (Form 1) 和奈玛特韦甲基叔丁基醚溶剂合物(Form 2) 为文献已报道的晶型, 奈玛特韦乙酸异丁酯溶剂合物(NMTW-IBAC) 和奈玛特韦乙酸乙酯溶剂合物(NMTW-EA) 为两种新的溶剂合物。采用单晶X射线衍射、多晶X射线衍射、热重分析和差示扫描量热法对奈玛特韦多晶型进行结构表征, 同时结合Hirshfeld表面分析和相互作用能分析研究了其热稳定性及相转变。结果表明, 奈玛特韦Form 1属于正交晶系, P212121空间群, 其最小不对称单元中含有一个奈玛特韦分子, 不含溶剂分子, 和文献报道的晶型4 (Form 4) 属于同一种晶型, 只是其较大的热膨胀导致不同温度下的结晶学参数的差异。奈玛特韦三种溶剂合物属于同结构, 均为单斜晶系, P21空间群, 最小不对称单元由一个奈玛特韦分子和一个溶剂分子组成。热分析结果表明Form 1为不含溶剂的晶型, 其热稳定最好, 分子间氢键作用最强; 在三种溶剂合物中NMTW-EA的热稳定性最差, 奈玛特韦分子与溶剂分子间氢键最弱。能量框架可视化结果显示, 溶剂与奈玛特韦分子间排列越紧密, 溶剂分子与奈玛特韦分子总相互作用能越大。三种溶剂合物的相变研究表明, NMTW-IBAC和NMTW-EA分别在脱溶剂后转变为无定型, 而Form 2则在脱溶剂过程中发生油化。本研究为奈玛特韦多晶型的分析鉴别和质量控制提供理论指导。
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Asymmetric unit of nirmatrelvir Form 1, nirmatrelvir Form 4 and nirmatrelvir Form 2, NMTW-IBAC and NMTW-EA. NMTW-IBAC: Nirmatrelvir isobutyl acetate solvate; NMTW-EA: Nirmatrelvir ethyl acetate solvate , figureFileSmall=Om+DpR2FasfR4SguStdOkQ==, figureFileBig=1nYKAlkRZDyaEJjx9t+TPQ==, tableContent=null), ArticleFig(id=1198960246937973168, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1198656223894667783, language=EN, label=null, caption=null, figureFileSmall=bttwhOV+cQq1UOVPpv7Y1A==, figureFileBig=bnNwsmk9EGMakQM/4x7LSw==, tableContent=null), ArticleFig(id=1198960247076385216, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1198656223894667783, language=CN, label=Figure 2, caption=
The hydrogen-bonding network of nirmatrelvir Form 1 (A), nirmatrelvir Form 2 (B), NMTW-IBAC (C) and NMTW-EA (D). Hydrogen bonds are shown as green lines and H atoms not involved in the hydrogen-bonding have been omitted for clarity; color codes: F (dark green), O (red), N (blue), C (gray), H (green) , figureFileSmall=bttwhOV+cQq1UOVPpv7Y1A==, figureFileBig=bnNwsmk9EGMakQM/4x7LSw==, tableContent=null), ArticleFig(id=1198960247227380173, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1198656223894667783, language=EN, label=null, caption=null, figureFileSmall=r4yiCwk0ooP3240rWCkQKQ==, figureFileBig=U2y2h0EcoBtK0l4p8Kthwg==, tableContent=null), ArticleFig(id=1198960247361597919, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1198656223894667783, language=CN, label=Figure 3, caption=
Overlay of powder X-ray diffraction pattern and the simulated pattern (red line) from their crystal structure of nirmatrelvir Form 1 and nirmatrelvir Form 2, NMTW-IBAC and NMTW-EA , figureFileSmall=r4yiCwk0ooP3240rWCkQKQ==, figureFileBig=U2y2h0EcoBtK0l4p8Kthwg==, tableContent=null), ArticleFig(id=1198960247491621358, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1198656223894667783, language=EN, label=null, caption=null, figureFileSmall=b6aFep1wPmRRQkrWksl2FQ==, figureFileBig=um0i55YBMEMDI0rDJWnDBg==, tableContent=null), ArticleFig(id=1198960247604867577, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1198656223894667783, language=CN, label=Figure 4, caption=
Overlay of thermogravimetric analysis (TG) pattern (A) and differential scanning calorimetry (DSC) pattern (B) for nirmatrelvir Form 1 and nirmatrelvir Form 2, NMTW-IBAC and NMTW-EA , figureFileSmall=b6aFep1wPmRRQkrWksl2FQ==, figureFileBig=um0i55YBMEMDI0rDJWnDBg==, tableContent=null), ArticleFig(id=1198960247705530890, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1198656223894667783, language=EN, label=null, caption=null, figureFileSmall=MPdvhJAWjd9XCSi9mfkKlg==, figureFileBig=82N6MGVkkCHCLL7pl8kzEA==, tableContent=null), ArticleFig(id=1198960247852331549, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1198656223894667783, language=CN, label=Figure 5, caption=
Overlay of powder X-ray diffraction pattern for three solvates including Form 2, NMTW-IBAC and NMTW-EA before and after heat treatment , figureFileSmall=MPdvhJAWjd9XCSi9mfkKlg==, figureFileBig=82N6MGVkkCHCLL7pl8kzEA==, tableContent=null), ArticleFig(id=1198960247982354987, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1198656223894667783, language=EN, label=null, caption=null, figureFileSmall=Czw9MM4Qwj6If8tvMsk1Ow==, figureFileBig=pNNRVUSotSHt+NRKxP5JMQ==, tableContent=null), ArticleFig(id=1198960248116572726, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1198656223894667783, language=CN, label=Figure 6, caption=
Hirshfeld surface, 2D fingerprint plots and energy frameworks of nirmatrelvir Form 1 (A) and nirmatrelvir Form 2 (B), NMTW-IBAC (C) and NMTW-EA (D) , figureFileSmall=Czw9MM4Qwj6If8tvMsk1Ow==, figureFileBig=pNNRVUSotSHt+NRKxP5JMQ==, tableContent=null), ArticleFig(id=1198960248263373382, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1198656223894667783, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| Parameter | Form 1 | Form 4 | Form 2 | NMTW-IBAC | NMTW-EA |
| Empirical formula | C23H32F3N5O4 | C23H32F3N5O4 | C23H32F3N5O4‧C5H12O | C23H32F3N5O4‧C6H12O2 | C23H32F3N5O4‧C4H8O2 |
| Formula weight | 499.53 | 499.53 | 587.68 | 615.69 | 587.64 |
| Temperature/K | 293.0 | 170.0 | 293.0 | 293.0 | 293.0 |
| Crystal system | Orthorhombic | Orthorhombic | Monoclinic | Monoclinic | Monoclinic |
| Space group | P212121 | P212121 | P21 | P21 | P21 |
| a/Å | 9.678 6 (2) | 9.210 1 (2) | 12.783 8 (2) | 13.258 7 (3) | 13.004 6 (2) |
| b/Å | 15.037 9 (3) | 15.074 5 (4) | 9.381 90 (10) | 9.093 5 (2) | 8.804 90 (10) |
| c/Å | 18.035 2 (4) | 18.042 5 (5) | 14.518 9 (2) | 14.590 1 (3) | 14.789 3 (2) |
| β/° | 90 | 90 | 103.230 0 (10) | 106.354 0 (10) | 107.046 0 (10) |
| Volume/Å3 | 2 624.95 (10) | 2 504.98 (11) | 1 695.13 (4) | 1 687.93 (6) | 1 619.04 (4) |
| Z | 4 | 4 | 2 | 2 | 2 |
| ρ/g$ \cdot $cm-3 | 1.264 | 1.325 | 1.151 | 1.211 | 1.205 |
| μ/mm-1 | 0.863 | 0.904 | 0.758 | 0.808 | 0.820 |
| Goodness-of-fit on F2 | 1.052 | 1.038 | 1.097 | 1.035 | 1.052 |
Final R indexes [I $ \ge $ 2σ (I)] | R1 = 0.038 1, wR2 = 0.094 7 | R1 = 0.032 4, wR2 = 0.079 7 | R1 = 0.049 0, wR2 = 0.139 0 | R1 = 0.041 0, wR2 = 0.117 0 | R1 = 0.044 6, wR2 = 0.127 1 |
| CCDC number | 2 246 467 | 2 246 470 | 2 246 468 | 2 246 472 | 2 246 474 |
), ArticleFig(id=1198960248443728467, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1198656223894667783, language=CN, label=Table 1, caption=
Crystallographic data of nirmatrelvir Form 1, nirmatrelvir Form 4, solvates including nirmatrelvir Form 2, NMTW-IBAC and NMTW-EA. a, b, c: Crystallographic axes; CCDC: Cambridge crystallographic data centre
, figureFileSmall=null, figureFileBig=null, tableContent=
| Parameter | Form 1 | Form 4 | Form 2 | NMTW-IBAC | NMTW-EA |
| Empirical formula | C23H32F3N5O4 | C23H32F3N5O4 | C23H32F3N5O4‧C5H12O | C23H32F3N5O4‧C6H12O2 | C23H32F3N5O4‧C4H8O2 |
| Formula weight | 499.53 | 499.53 | 587.68 | 615.69 | 587.64 |
| Temperature/K | 293.0 | 170.0 | 293.0 | 293.0 | 293.0 |
| Crystal system | Orthorhombic | Orthorhombic | Monoclinic | Monoclinic | Monoclinic |
| Space group | P212121 | P212121 | P21 | P21 | P21 |
| a/Å | 9.678 6 (2) | 9.210 1 (2) | 12.783 8 (2) | 13.258 7 (3) | 13.004 6 (2) |
| b/Å | 15.037 9 (3) | 15.074 5 (4) | 9.381 90 (10) | 9.093 5 (2) | 8.804 90 (10) |
| c/Å | 18.035 2 (4) | 18.042 5 (5) | 14.518 9 (2) | 14.590 1 (3) | 14.789 3 (2) |
| β/° | 90 | 90 | 103.230 0 (10) | 106.354 0 (10) | 107.046 0 (10) |
| Volume/Å3 | 2 624.95 (10) | 2 504.98 (11) | 1 695.13 (4) | 1 687.93 (6) | 1 619.04 (4) |
| Z | 4 | 4 | 2 | 2 | 2 |
| ρ/g$ \cdot $cm-3 | 1.264 | 1.325 | 1.151 | 1.211 | 1.205 |
| μ/mm-1 | 0.863 | 0.904 | 0.758 | 0.808 | 0.820 |
| Goodness-of-fit on F2 | 1.052 | 1.038 | 1.097 | 1.035 | 1.052 |
Final R indexes [I $ \ge $ 2σ (I)] | R1 = 0.038 1, wR2 = 0.094 7 | R1 = 0.032 4, wR2 = 0.079 7 | R1 = 0.049 0, wR2 = 0.139 0 | R1 = 0.041 0, wR2 = 0.117 0 | R1 = 0.044 6, wR2 = 0.127 1 |
| CCDC number | 2 246 467 | 2 246 470 | 2 246 468 | 2 246 472 | 2 246 474 |
), ArticleFig(id=1198960248628277861, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1198656223894667783, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
| D-H…A | d(D-H)/Å | d(H-A)/Å | d(D-A)/Å | D-H-A/° | Symmetric code |
| Form 1 | N1-H1…N21 | 0.86 | 2.26 | 2.991 (4) | 142.8 | 11+X, +Y, +Z; 21/2+X, 1/2-Y, 1-Z; 31/2-X, 1-Y, 1/2+Z |
| N3-H3…O12 | 0.86 | 2.21 | 2.778 (3) | 123.6 |
| N5-H5…N23 | 0.86 | 2.22 | 3.072 (4) | 172.0 | |
| Form 4 | N1-H1…N21 | 0.88 | 2.60 | 3.108 (3) | 117.8 | 11+X, +Y, +Z; 21/2-X, 1-Y, -1/2+Z; 3-1/2+X, 3/2-Y, 1-Z |
| N3-H3…O12 | 0.87 | 2.03 | 2.815 (2) | 150.3 |
| N5-H5…N23 | 0.88 | 2.14 | 3.012 (3) | 171.6 | |
| Form 2 | N1-H1…O31 | 0.86 | 2.02 | 2.865 (4) | 166.9 | 11-X, -1/2+Y, 1-Z; 21-X, 1/2+Y, 1-Z |
| N3-H3…O5 | 0.86 | 1.99 | 2.833 (6) | 166.8 | |
| N5-H5…O12 | 0.86 | 2.02 | 2.869 (4) | 167.3 | |
| NMTW-EA | N1-H1…O31 | 0.86 | 2.21 | 3.009 (3) | 153.9 | 11-X, 1/2+Y, 1-Z; 21-X, -1/2+Y, 1-Z |
| N3-H3…O5 | 0.86 | 2.29 | 3.018 (4) | 142.5 | |
| N5-H5…O12 | 0.86 | 2.00 | 2.852 (3) | 170.9 | |
| NMTW-IBAC | N1-H1…O31 | 0.86 | 2.20 | 3.010 (3) | 156.4 | 11-X, 1/2+Y, 1-Z; 21-X, -1/2+Y, 1-Z |
| N3-H3…O5 | 0.86 | 2.23 | 2.971 (4) | 145.0 | |
| N5-H5…O12 | 0.86 | 1.98 | 2.830 (3) | 169.1 | |
), ArticleFig(id=1198960248812827255, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1198656223894667783, language=CN, label=Table 2, caption=
Hydrogen bonds for nirmatrelvir Form 1, nirmatrelvir Form 4, nirmatrelvir Form 2, NMTW-EA and NMTW-IBAC. D: Donor; H: Hydrogen; A: Acceptor
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| D-H…A | d(D-H)/Å | d(H-A)/Å | d(D-A)/Å | D-H-A/° | Symmetric code |
| Form 1 | N1-H1…N21 | 0.86 | 2.26 | 2.991 (4) | 142.8 | 11+X, +Y, +Z; 21/2+X, 1/2-Y, 1-Z; 31/2-X, 1-Y, 1/2+Z |
| N3-H3…O12 | 0.86 | 2.21 | 2.778 (3) | 123.6 |
| N5-H5…N23 | 0.86 | 2.22 | 3.072 (4) | 172.0 | |
| Form 4 | N1-H1…N21 | 0.88 | 2.60 | 3.108 (3) | 117.8 | 11+X, +Y, +Z; 21/2-X, 1-Y, -1/2+Z; 3-1/2+X, 3/2-Y, 1-Z |
| N3-H3…O12 | 0.87 | 2.03 | 2.815 (2) | 150.3 |
| N5-H5…N23 | 0.88 | 2.14 | 3.012 (3) | 171.6 | |
| Form 2 | N1-H1…O31 | 0.86 | 2.02 | 2.865 (4) | 166.9 | 11-X, -1/2+Y, 1-Z; 21-X, 1/2+Y, 1-Z |
| N3-H3…O5 | 0.86 | 1.99 | 2.833 (6) | 166.8 | |
| N5-H5…O12 | 0.86 | 2.02 | 2.869 (4) | 167.3 | |
| NMTW-EA | N1-H1…O31 | 0.86 | 2.21 | 3.009 (3) | 153.9 | 11-X, 1/2+Y, 1-Z; 21-X, -1/2+Y, 1-Z |
| N3-H3…O5 | 0.86 | 2.29 | 3.018 (4) | 142.5 | |
| N5-H5…O12 | 0.86 | 2.00 | 2.852 (3) | 170.9 | |
| NMTW-IBAC | N1-H1…O31 | 0.86 | 2.20 | 3.010 (3) | 156.4 | 11-X, 1/2+Y, 1-Z; 21-X, -1/2+Y, 1-Z |
| N3-H3…O5 | 0.86 | 2.23 | 2.971 (4) | 145.0 | |
| N5-H5…O12 | 0.86 | 1.98 | 2.830 (3) | 169.1 | |
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