Article(id=1193632557796393541, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1193558470239678932, articleNumber=null, orderNo=null, doi=10.16438/j.0513-4870.2024-0820, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=research-article, receivedDate=1724601600000, receivedDateStr=2024-08-26, revisedDate=1730649600000, revisedDateStr=2024-11-04, acceptedDate=null, acceptedDateStr=null, onlineDate=1762513778399, onlineDateStr=2025-11-07, pubDate=1736611200000, pubDateStr=2025-01-12, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1762513778399, onlineIssueDateStr=2025-11-07, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1762513778399, creator=13701087609, updateTime=1762513778399, updator=13701087609, issue=Issue{id=1193558470239678932, tenantId=1146029695717560320, journalId=1189982191388893191, year='2025', volume='60', issue='1', pageStart='1', pageEnd='244', issueExtLink='null', onlineDate='null', pubDate='null', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=-1, specialIssue=null, createTime=1762496114549, creator=13701087609, updateTime=1764224942173, updator=13701087609, preIssue=null, nextIssue=null, ext={EN=IssueExt(id=1200809698921402865, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1193558470239678932, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1200809698921402866, tenantId=1146029695717560320, journalId=1189982191388893191, issueId=1193558470239678932, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null}, startPage=164, endPage=171, ext={EN=ArticleExt(id=1193632558031274566, articleId=1193632557796393541, tenantId=1146029695717560320, journalId=1189982191388893191, language=EN, title=Design, synthesis and evaluation of oxadiazoles as novel XO inhibitors, columnId=1190335348761793317, journalTitle=Acta Pharmaceutica Sinica, columnName=Original Articles, runingTitle=null, highlight=null, articleAbstract=

Xanthine oxidase (XO) is an important therapeutic target for the treatment of hyperuricemia and gout. Based on the previously identified potent XO inhibitor 1, seventeen oxadiazoles and their ring-opening analogues were designed and synthesized via the bioisostere replacement strategy. Among them, compounds 2l, 2n, and 3b showed obvious XO inhibitory activity at the concentration of 10 μmol·L-1, and compound 3b exhibited an IC50 value of 1.45 μmol·L-1.

, correspAuthors=Chuan-ming ZHANG, authorNote=null, correspAuthorsNote=null, copyrightStatement=Copyright ©2025 Acta Pharmaceutica Sinica. All rights reserved., copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, authorCompany=null, fund=null, authors=null, authorsList=Hong-zhan WANG, Ya-jun YANG, Ying YANG, Fei YE, Jin-ying TIAN, Chuan-ming ZHANG, Zhi-yan XIAO), CN=ArticleExt(id=1193633565201105003, articleId=1193632557796393541, tenantId=1146029695717560320, journalId=1189982191388893191, language=CN, title=噁二唑类化合物的设计、合成及黄嘌呤氧化酶抑制活性研究, columnId=1190335348896011050, journalTitle=药学学报, columnName=研究论文, runingTitle=null, highlight=null, articleAbstract=

黄嘌呤氧化酶(xanthine oxidase, XO) 是高尿酸血症及痛风治疗药物的重要靶点。基于前期获得的高活性XO抑制剂1, 采用生物电子等排策略, 设计并合成了噁二唑类化合物及其开环类似物共17个。其中, 化合物2l2n3b在10 μmol·L-1浓度下具有显著的XO抑制活性; 化合物3b抑制XO的IC50值达到1.45 μmol·L-1

, correspAuthors=张传明, authorNote=null, correspAuthorsNote=
*张传明, Tel: 18947221989, E-mail:
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Uric acid in metabolic syndrome: does uric acid have a definitive role? [J]. Eur J Intern Med, 2022, 103: 4-12., articleTitle=null, refAbstract=null), Reference(id=1194709243526881786, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193632557796393541, doi=null, pmid=null, pmcid=null, year=null, volume=null, issue=null, pageStart=null, pageEnd=null, url=null, language=null, rfNumber=[2], rfOrder=1, authorNames=null, journalName=null, refType=null, unstructuredReference=Johnson RJ, Bakris GL, Borghi C, et al. Hyperuricemia, acute and chronic kidney disease, hypertension, and cardiovascular disease: report of a scientific workshop organized by the National Kidney Foundation [J]. 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Reagents and conditions: a. R<sub>1</sub>Cl, K<sub>2</sub>CO<sub>3</sub>, KI, DMF, 80 ℃; b. NH<sub>2</sub>OH, NaHCO<sub>3</sub>, EtOH, 95 ℃; c. HATU, DIPEA, ArCOOH, DMF, rt; d. DMF, 110 ℃. HATU: 2-(1<i>H</i>-7-Azabenzotriazol-1-yl)-1, 1, 3, 3-tetramethyl-uronium hexafluoro phosphate; DIPEA: <i>N</i>, <i>N</i>ˈ-Diisopropylethylamibe , figureFileSmall=ZRmISaYNj9a3rxLE5gs20Q==, figureFileBig=ZiEFR09Ur9ot9gmE+mID5A==, tableContent=null), ArticleFig(id=1194709241115156949, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193632557796393541, language=EN, label=null, caption=null, figureFileSmall=r4hoWk52CQYUKR4OQJ86/Q==, figureFileBig=D6tY0Hxitgj8CMMSAa6hYQ==, tableContent=null), ArticleFig(id=1194709241203237335, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193632557796393541, language=CN, label=Scheme 2, caption= Synthesis of compounds <strong>3a-3c</strong>. Reagents and conditions: a. K<sub>2</sub>CO<sub>3</sub>, KI, DMF, 80 ℃; b. 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No. R1 R2 R3 Ar Inhibition/%
2a Cl Cl 35.4
2b F H 22.8
2c Cl H 8.8
2d Br H 30.7
2e I H 33.1
2f F F 7.5
2g H H 20.7
2h Br Br 34.1
2i CH3 H 10.3
2j OCH3 H 23.3
2k CF3 H 31.0
2l CF3 H 50.5
2m CF3 H 26.5
2n NO2 H 52.3
Feb - - - - 97.0
1 - - - - 101.6
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Inhibitory activity of compounds 2a-2n against xanthine oxidase (XO) at the concentration of 10 μmol·L-1. Feb: Febuxostat

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No. R1 R2 R3 Ar Inhibition/%
2a Cl Cl 35.4
2b F H 22.8
2c Cl H 8.8
2d Br H 30.7
2e I H 33.1
2f F F 7.5
2g H H 20.7
2h Br Br 34.1
2i CH3 H 10.3
2j OCH3 H 23.3
2k CF3 H 31.0
2l CF3 H 50.5
2m CF3 H 26.5
2n NO2 H 52.3
Feb - - - - 97.0
1 - - - - 101.6
), ArticleFig(id=1194709241723331046, tenantId=1146029695717560320, journalId=1189982191388893191, articleId=1193632557796393541, language=EN, label=null, caption=null, figureFileSmall=null, figureFileBig=null, tableContent=
No. Linker Inhibition/% IC50/μmol·L-1
3a -1.9 -
3b 89.2 1.45
3c 13.1 -
Feb - 97.0 2.44
1 - 101.6 0.20
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Inhibitory activity of compounds 3a-3c against XO at the concentration of 10 μmol·L-1

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No. Linker Inhibition/% IC50/μmol·L-1
3a -1.9 -
3b 89.2 1.45
3c 13.1 -
Feb - 97.0 2.44
1 - 101.6 0.20
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噁二唑类化合物的设计、合成及黄嘌呤氧化酶抑制活性研究
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王宏占 1, 2 , 杨亚军 2 , 杨颖 2 , 叶菲 3 , 田金英 3 , 张传明 1, * , 肖志艳 2
药学学报 | 研究论文 2025,60(1): 164-171
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药学学报 | 研究论文 2025, 60(1): 164-171
噁二唑类化合物的设计、合成及黄嘌呤氧化酶抑制活性研究
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王宏占1, 2, 杨亚军2, 杨颖2, 叶菲3, 田金英3, 张传明1, * , 肖志艳2
作者信息
  • 1.内蒙古科技大学包头医学院药学院, 内蒙古 包头 014040
  • 2.中国医学科学院、北京协和医学院药物研究所, 活性物质发现与适药化研究北京市重点实验室, 北京 100050
  • 3.中国医学科学院、北京协和医学院药物研究所, 新药作用机制研究与药效评价北京市重点实验室, 北京 100050

通讯作者:

*张传明, Tel: 18947221989, E-mail:
Design, synthesis and evaluation of oxadiazoles as novel XO inhibitors
Hong-zhan WANG1, 2, Ya-jun YANG2, Ying YANG2, Fei YE3, Jin-ying TIAN3, Chuan-ming ZHANG1, * , Zhi-yan XIAO2
Affiliations
  • 1. School of Pharmacy, Baotou Medical College, Inner Mongolia University of Science and Technology, Baotou 014040
  • 2. Beijing Key Laboratory of Active Substance Discovery and Druggability Evaluation, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
  • 3. Beijing Key Laboratory of New Drug Mechanisms and Pharmacological Evaluation Study, Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China
出版时间: 2025-01-12 doi: 10.16438/j.0513-4870.2024-0820
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黄嘌呤氧化酶(xanthine oxidase, XO) 是高尿酸血症及痛风治疗药物的重要靶点。基于前期获得的高活性XO抑制剂1, 采用生物电子等排策略, 设计并合成了噁二唑类化合物及其开环类似物共17个。其中, 化合物2l2n3b在10 μmol·L-1浓度下具有显著的XO抑制活性; 化合物3b抑制XO的IC50值达到1.45 μmol·L-1

黄嘌呤氧化酶  /  黄嘌呤氧化酶抑制剂  /  噁二唑类化合物  /  高尿酸血症  /  痛风

Xanthine oxidase (XO) is an important therapeutic target for the treatment of hyperuricemia and gout. Based on the previously identified potent XO inhibitor 1, seventeen oxadiazoles and their ring-opening analogues were designed and synthesized via the bioisostere replacement strategy. Among them, compounds 2l, 2n, and 3b showed obvious XO inhibitory activity at the concentration of 10 μmol·L-1, and compound 3b exhibited an IC50 value of 1.45 μmol·L-1.

xanthine oxidase  /  xanthine oxidase inhibitor  /  oxadiazole  /  hyperuricemia  /  gout
王宏占, 杨亚军, 杨颖, 叶菲, 田金英, 张传明, 肖志艳. 噁二唑类化合物的设计、合成及黄嘌呤氧化酶抑制活性研究. 药学学报, 2025 , 60 (1) : 164 -171 . DOI: 10.16438/j.0513-4870.2024-0820
Hong-zhan WANG, Ya-jun YANG, Ying YANG, Fei YE, Jin-ying TIAN, Chuan-ming ZHANG, Zhi-yan XIAO. Design, synthesis and evaluation of oxadiazoles as novel XO inhibitors[J]. Acta Pharmaceutica Sinica, 2025 , 60 (1) : 164 -171 . DOI: 10.16438/j.0513-4870.2024-0820
尿酸作为人体嘌呤代谢的最终产物, 在维持人体内环境稳态中具有关键作用[1]。高尿酸血症是体内嘌呤代谢紊乱造成的代谢性疾病, 表现为血清尿酸水平过高(男性: > 7.0 mg·dL-1; 女性: > 6.0 mg·dL-1)。持续的血尿酸水平过高导致尿酸钠晶体沉积在关节、组织中, 造成痛风, 严重者还可并发高血压、糖尿病、慢性肾脏病、心脑血管疾病等多种疾病[2, 3]
外源性的富含嘌呤食物及内源性的体内核蛋白在磷酸核糖焦磷酸、次黄嘌呤-鸟嘌呤磷酸核糖转移酶、腺嘌呤磷酸核糖转移酶、黄嘌呤氧化酶(xanthine oxidase, XO) 等嘌呤代谢相关酶的作用下产生尿酸[4]。XO是一种含钼离子的黄素蛋白酶, 其催化中心包含两个铁-硫氧化还原中心、一个黄素腺嘌呤二核苷酸和一个钼蝶呤中心, 其中钼蝶呤中心是催化尿酸生成的关键催化中心[5]。抑制XO能够有效减少尿酸的产生, 从而降低血尿酸水平。
目前已上市的XO抑制剂有: 别嘌呤醇(allopurinol)、非布索坦(febuxostat) 和托匹司他(topiroxostat) (图 1)。别嘌呤醇1966年经FDA批准上市, 作为嘌呤类似物, 别嘌呤醇竞争性地抑制了嘌呤类底物与钼蝶呤的配位结合, 阻断了尿酸的体内代谢途径, 从而减少了尿酸的生成[6, 7]。别嘌呤醇临床使用剂量大, 且会导致药物超敏反应及严重皮肤不良反应[7]。非嘌呤类药物非布索坦于2009年经美国FDA批准上市, 托匹司他于2013年在日本上市, 与嘌呤类药物相比, 非布索坦和托匹司他临床使用剂量低, 在药效方面更具优势[6, 8]。因此, 非嘌呤类XO抑制剂成为近年来降尿酸药物研发的热点。
虽然非布索坦和托匹司他都是非嘌呤类XO抑制剂, 二者的结合模式却不相同。非布索坦通过占据XO的疏水空腔来阻止钼蝶呤中心对次黄嘌呤和黄嘌呤的催化作用[9]; 托匹司他则不仅占据XO的疏水空腔, 还与钼蝶呤中心形成共价结合[10]。前期研究中, 作者采用分子拼接策略, 结合非布索坦与托匹司他的作用模式, 获得了一系列对XO具有显著抑制作用的新化合物[11]。其中, 化合物1 (图 2) 对XO的IC50值达0.20 nmol·L-1。本文基于化合物1, 采用生物电子等排策略, 设计、合成了化合物2a~2n及其开环类似物3a~3c, 并初步研究了该类化合物对XO的抑制作用。
如合成路线1所示, 化合物2a~2n以化合物4为起始原料, 与相应的卤代烷烃反应得到化合物5。化合物5经盐酸羟胺还原得到化合物6。化合物6与芳基羧酸在HATU作用下缩合得到化合物7, 化合物7经过加热环化得到化合物2a~2n。如合成路线2所示, 化合物3a~3c分别以化合物811为原料, 与4-(3-氯丙基)吗啉反应分别得到中间体化合物912。化合物9经盐酸羟胺还原得到化合物10, 化合物10分别与4-吡啶甲醛和4-吡啶甲亚胺酸甲酯反应得到化合物3a3b, 化合物12与异烟肼反应得到化合物3c
在10 μmol·L-1浓度下, 测定了化合物2a~2n3a~3c对XO的抑制活性, 结果见表 1表 2。与化合物1相比, 化合物2a~2n3a~3c对XO的抑制活性显著减弱, 仅化合物2l2n3b表现出明显的XO抑制作用, 其中化合物3b的IC50值为1.45 μmol·L-1
表 1所示的噁二唑类化合物对XO的抑制活性明显弱于化合物1, 仅化合物2l2n具有一定的XO抑制作用, 提示以噁二唑环替代化合物1中的三氮唑环可能造成抑制剂缺失了与XO活性腔的重要相互作用。托匹司他与XO的共晶结构显示其结构中三氮唑环上的N4作为氢键给予体与XO催化活性区的Glu802存在氢键相互作用[10]; 前期对化合物1的分子对接研究也提示三氮唑的N4与Glu802的羰基存在氢键相互作用[9]。以噁二唑环替代了托匹司他和化合物1中的三氮唑环, 导致环上氢键给予体的缺失, 这可能是造成噁二唑类化合物XO抑制活性显著下降(2a vs 1) 的主要原因, 同时也提示三氮唑环的N4与Glu802的羰基之间的氢键相互作用可能是维持XO抑制活性的关键作用力。
虽然由于缺失了与Glu802的羰基之间的氢键相互作用, 噁二唑类化合物对XO的抑制活性明显减弱, 但表 1数据提示, R2和R3的体积和电性均对抑制剂的活性有一定影响。当R2和R3为体积较小的取代基时, XO抑制活性偏弱(例如2b2c2f2g2i); 当R2和R3为吸电子取代基团时, XO抑制活性略有增强(2i vs 2n)。此外, 当Ar基团中的吡啶环上存在甲基取代时, XO抑制活性也有提升(2k vs 2l), 提示甲基取代的引入或使化合物能更好地占据疏水腔, 产生较强的疏水相互作用。R1中碳链的长度的变化对XO抑制活性影响不明显(2k vs 2m)。
在3个开链类似物中, 仅化合物3b显示较好的XO抑制作用。将化合物3b与XO进行分子对接, 结果显示化合物3b作用于XO的催化活性区, 结构中亚胺部分的NH作为氢键给予体与Glu802形成了氢键相互作用, Ser876与酰肼部分形成氢键相互作用(图 3)。与化合物1类似, 化合物3b也保留了非布索坦的部分关键作用力, 如与Arg880的氢键相互作用, 与Phe914、Phe1004的π-π相互作用等。然而, 与化合物1相比[9], 化合物3b中的吡啶环与钼蝶呤中心的距离稍远, 不能有效形成共价结合, 这可能也是造成其对XO的抑制活性较化合物1减弱的重要原因。而化合物3a3c由于缺失了作为氢键给予体与Glu802的羰基形成关键氢键相互作用的基团, 同时由于开链结构中C=N双键的存在, 推测其在一定程度上影响了分子的整体构象和形状, 导致分子不能与结合腔很好配适, 因而XO抑制活性显著降低。
非嘌呤类小分子抑制剂仍是目前XO抑制剂研究的主流。前期研究中, 采用分子拼接策略, 发现了对XO具有显著抑制作用的新化合物1。本文对化合物1进行了初步的构效关系研究, 设计、合成了化合物2a~2n3a~3c。其中化合物2l2n3b在10 μmol·L-1浓度下对XO的抑制率超过50%, 具有明显的酶抑制活性。其中, 化合物3b对XO的IC50值达到1.45 μmol·L-1。分子对接研究表明, 化合物3b作用于XO的催化活性区, 形成了关键的氢键相互作用和π-π相互作用, 但不能与钼蝶呤中心形成有效的共价结合。
熔点采用Fisher Scientific显微熔点仪测定, 温度未校正。核磁氢谱采用Quantum-1 400MHz核磁共振仪测定, 内标为TMS。质谱采用LC/MDC-MS串联质谱仪(Thermo, USA) 测定。柱色谱分离采用硅胶H或粗硅胶(200~300目), 薄层色谱采用硅胶GF 254, 均购自青岛海洋化工厂。实验所用试剂均为化学纯或分析纯。
于250 mL茄形瓶中, 加入3, 5-二氯-4-羟基苯腈(0.94 g, 5 mmol)、4-(3-氯丙基)吗啉(0.98 g, 6 mmol)、碳酸钾(1.4 g, 10 mmol)、碘化钾(16.6 mg, 0.1 mmol) 和DMF (30 mL), 反应液于80 ℃下加热搅拌反应10 h。待反应完全后, 蒸除部分DMF, 加入乙酸乙酯和水萃取, 有机相用无水硫酸钠干燥, 蒸除溶剂后, 剩余物经柱层析分离(石油醚-乙酸乙酯10∶1), 得到无色液体1.2 g, 收率75%。
于100 mL茄形瓶中, 将碳酸氢钠(168 mg, 2 mmol) 溶于10 mL水中, 加入盐酸羟胺(140 mg, 2 mmol)。将3, 5-二氯-4-(3-吗啉代丙氧基)苯甲腈(315.2 mg, 1 mmol) 溶于10 mL乙醇中, 加入到上述溶液中, 95 ℃下加热回流12 h。待反应完全后, 蒸除乙醇, 加入乙酸乙酯和水萃取, 有机相用无水硫酸钠干燥, 蒸除溶剂得到白色固体。硅胶柱层析(石油醚-乙酸乙酯3∶1), 得到白色固体226 mg, 收率65%。mp: 82~84 ℃。
于100 mL茄形瓶中, 将异烟酸(61.5 mg, 0.5 mmol), HATU (570 mg, 1.5 mmol), DIPEA (600 mg, 2.5 mmol) 溶于15 mL无水DMF中, 室温搅拌2 min后, 加入(Z)-3, 5-二氯-N'-羟基-4-(3-吗啉基丙氧基)苯并脒(174 mg, 0.5 mmol), 室温搅拌10 h。待反应完全后, 蒸除部分DMF, 向残余物中加入乙酸乙酯和水萃取, 有机相用无水硫酸钠干燥, 蒸除溶剂后柱层析(石油醚-乙酸乙酯3∶1~1∶1) 得到白色固体94 mg, 收率42%。mp: 69~71 ℃。
于100 mL茄形瓶中, 将(Z)-3, 5-二氯-N'-(异烟酰氧基)-4-(3-吗啉基丙氧基)苯并脒(45 mg, 0.1 mmol) 溶于4 mL无水DMF中, 110 ℃下加热回流5 h。待反应完全后, 蒸除部分DMF, 向残余物中加入乙酸乙酯和水萃取, 有机相用无水硫酸钠干燥, 蒸除溶剂后用乙醚洗, 过滤, 得到白色粉末状固体37 mg, 收率87%。mp: 113~115 ℃。1H NMR (400 MHz, DMSO-d6) δH: 8.95 (d, J = 6.1 Hz, 2H), 8.15 (s, 2H), 8.14 (d, J = 6.2 Hz, 2H), 4.18 (t, J = 6.4 Hz, 2H), 3.59 (t, J = 4.6 Hz, 4H), 2.55 (m, 2H), 2.40 (m, 4H), 1.99 (p, J = 6.4 Hz, 2H)。ESI-HR-MS m/z: calcd. For C20H21O3N4Cl2 [M+H]+ 435.098 52, found 435.099 49。
采用类似方法合成了化合物2b~2n
以3-氟-4-羟基苯腈为起始原料, 采用2a类似合成方法。得到黄色粉末, 收率: 70%。mp: 72~74 ℃。1H NMR (400 MHz, CDCl3) δH: 8.92 (d, J = 6.2 Hz, 2H), 8.08 (d, J = 6.2 Hz, 2H), 7.94 (m, 2H), 7.14 (t, J = 8.6 Hz, 1H), 4.25 (t, J = 6.2 Hz, 2H), 3.81 (m, 4H), 2.57 (m, 6H), 2.12 (m, 2H)。ESI-HR-MS m/z: calcd. for C20H22O3N4F [M+H]+ 385.167 05, found 385.167 24。
以3-氯-4-羟基苯腈为起始原料, 得到黄色粉末, 收率: 68%。mp: 175~177 ℃。1H NMR (400 MHz, DMSO-d6) δH: 8.95 (d, J = 6.1 Hz, 2H), 8.15~8.08 (m, 4H), 7.43 (d, J = 8.8 Hz, 1H), 4.30 (t, J = 5.7 Hz, 2H), 3.72 (m, 4H), 3.15 (br, s, 4H), 2.55 (m, 2H), 2.22 (m, 2H)。ESI-HR-MS m/z: calcd. for C20H22O3N4Cl [M+H]+ 401.137 49, found 401.138 09。
以3-溴-4-羟基苯腈为起始原料, 得到黄色粉末, 收率: 75%。mp: 199~200 ℃。1H NMR (400 MHz, DMSO-d6) δH: 8.94 (d, J = 6.0 Hz, 2H), 8.29 (s, 1H), 8.16 (m, 1H), 8.13 (d, J = 6.0 Hz, 2H), 7.39 (d, J = 8.8 Hz, 1H), 4.30 (t, J = 6.1 Hz, 2H), 4.04 (d, J = 13.3 Hz, 2H), 3.69 (t, J = 12.2 Hz, 2H), 3.55 (d, J = 13.3 Hz, 2H), 3.33 (m, 2H), 3.16 (d, J = 10.3 Hz, 2H), 2.25 (m, 2H)。ESI-HR-MS m/z: calcd. for C20H22O3N4Br [M+H]+ 445.086 98, found 445.088 04。
以3-碘-4-羟基苯腈为起始原料, 得到黄色粉末, 收率: 65.3%。mp: 126~128 ℃。1H NMR (400 MHz, DMSO-d6) δH: 8.93 (d, J = 4.0 Hz, 2H), 8.44 (s, 1H), 8.15~8.06 (m, 3H), 7.23 (d, J = 8.7 Hz, 1H), 4.21 (t, J = 6.8 Hz, 2H), 3.60 (m, 4H), 2.52 (m, 2H), 2.41 (m, 4H), 1.96 (t, J = 6.8 Hz, 2H)。ESI-HR-MS m/z: calcd. for C20H22O3N4I [M+H]+ 493.073 11, found 493.073 12。
以3, 5-二氟-4-羟基苯腈为起始原料, 得到黄色粉末, 收率: 51%。mp: 177~179 ℃。1H NMR (400 MHz, DMSO-d6) δH: 8.95 (d, J = 6.0 Hz, 2H), 8.13 (d, J = 5.9 Hz, 2H), 7.88 (d, J = 8.2 Hz, 2H), 4.36 (t, J = 6.0 Hz, 2H), 4.12~3.94 (m, 4H), 3.73~3.59 (m, 2H), 3.59~3.46 (m, 2H), 3.15 (brs, 2H), 2.27~2.04 (m, 2H)。ESI-HR-MS m/z: calcd. for C20H21O3N4F2 [M+H]+ 403.157 62, found 403.157 90。
以4-羟基苯腈为起始原料, 得到白色粉末, 收率: 90%。mp: 84~86 ℃。1H NMR (400 MHz, DMSO-d6) δH: 8.97 (d, J = 5.1 Hz, 2H), 8.16~8.12 (m, 2H), 8.08 (d, J = 8.4 Hz, 2H), 7.19 (d, J = 8.4 Hz, 2H), 4.16 (m, 2H), 3.65 (s, 4H), 2.58 (s, 2H), 2.44 (s, 4H), 2.01~1.94 (m, 2H)。ESI-HR-MS m/z: calcd. for C20H23O3N4 [M+H]+ 367.176 47, found 367.176 85。
以3, 5-二氟-4-羟基苯腈为起始原料, 得到黄色粉末, 收率: 55%。mp: 123~125 ℃。1H NMR (400 MHz, DMSO-d6) δH: 8.94 (d, J = 6.0 Hz, 2H), 8.32 (s, 2H), 8.15 (d, J = 6.0 Hz, 2H), 4.14 (t, J = 6.4 Hz, 2H), 3.60 (t, J = 4.7 Hz, 4H), 2.56 (m, 2H), 2.41 (m, 4H), 2.02 (p, J = 6.4 Hz, 2H)。ESI-HR-MS m/z: calcd. for C20H21O3N4Cl2 [M+H]+ 522.997 49, found 522.998 54。
以3-甲基-4-羟基苯腈为起始原料, 得到红褐色晶体, 收率: 37%。mp: 83~85 ℃。1H NMR (400 MHz, CDCl3) δH: 8.91 (d, J = 5.9 Hz, 2H), 8.09 (d, J = 5.9 Hz, 2H), 8.00 (m, 2H), 6.97 (d, J = 8.8 Hz, 1H), 4.16 (t, J = 6.2 Hz, 2H), 3.81 (m, 4H), 2.57 (m, 4H), 2.33 (s, 3H), 2.11 (m, 2H), 1.29 (brs, 2H)。ESI-HR-MS m/z: calcd. for C21H25O3N4 [M+H]+ 381.192 12, found 381.192 23。
以3-甲氧基-4-羟基苯腈为起始原料, 得到白色粉末, 收率: 68%。mp: 126~128 ℃。1H NMR (400 MHz, DMSO-d6) δH: 8.94 (d, J = 6.1 Hz, 2H), 8.13 (d, J = 6.1 Hz, 2H), 7.72 (d, J = 8.4 Hz, 1H), 7.60 (s, 1H), 7.21 (d, J = 8.4 Hz, 1H), 4.13 (t, J = 6.4 Hz, 2H), 3.90 (m, 3H), 3.60 (m, 4H), 2.46 (m, 2H), 2.39 (m, 4H), 1.95 (t, J = 6.4 Hz, 2H)。ESI-HR-MS m/z: calcd. for C21H25O4N4 [M+H]+ 397.187 03, found 397.187 16。
以3-三氟甲基-4-羟基苯腈为起始原料, 得到黄色粉末, 收率: 76%。mp: 137~139 ℃。1H NMR (400 MHz, DMSO-d6) δH: 8.94 (d, J = 6.0 Hz, 2H), 8.37 (d, J = 8.4 Hz, 1H), 8.28 (s, 1H), 8.15 (d, J = 6.0 Hz, 2H), 7.55 (d, J = 8.8 Hz, 1H), 4.31 (m, 2H), 3.59 (m, 4H), 2.47 (m, 2H), 2.38 (m, 4H), 1.96 (m, 2H)。ESI-HR-MS m/z: calcd. for C21H22O3N4F3 [M+H]+ 435.163 85, found 435.163 97。
采用类似反应, 不同之处在于, 采用2-甲基-4-羧基吡啶代替异烟酸, 得到黄色晶体, 收率: 58.2%。mp: 102~104 ℃。1H NMR (400 MHz, DMSO-d6) δH: 8.79 (d, J = 5.1 Hz, 1H), 8.35 (dd, J = 8.8, 2.3 Hz, 1H), 8.25 (d, J = 2.3 Hz, 1H), 8.02 (s, 1H), 7.92 (dd, J = 5.1, 1.7 Hz, 1H), 7.53 (d, J = 8.8 Hz, 1H), 4.29 (t, J = 6.1 Hz, 2H), 3.59 (t, J = 4.6 Hz, 4H), 2.65 (s, 3H), 2.47 (t, J = 7.0 Hz, 2H), 2.38 (t, J = 4.6 Hz, 4H), 1.95 (t, J = 7.0 Hz, 2H)。ESI-HR-MS m/z: calcd. for C22H24O3N4F3 [M+H]+ 449.179 50, found 449.179 38。
采用类似反应, 不同之处在于, 采用4-(2-氯乙基)吗啉代替4-(3-氯丙基)吗啉, 得到黄色粉末, 收率: 57%。mp: 165~167 ℃。1H NMR (400 MHz, DMSO-d6) δH: 8.94 (dd, J = 4.5, 1.7 Hz, 2H), 8.36 (dd, J = 8.9, 2.3 Hz, 1H), 8.27 (d, J = 2.3 Hz, 1H), 8.15 (dd, J = 4.5, 1.7 Hz, 2H), 7.57 (d, J = 8.9 Hz, 1H), 4.39 (t, J = 5.6 Hz, 2H), 3.62~3.56 (m, 4H), 2.79 (t, J = 5.4 Hz, 2H), 2.51 (m, 4H)。ESI-HR-MS m/z: calcd. for C20H22O5N5 [M+H]+ 412.161 55, found 412.160 92。
以3-硝基-4-羟基苯腈为起始原料, 得到黄色粉末, 收率: 68.5%。mp: 83~85 ℃。1H NMR (400 MHz, DMSO-d6) δH: 8.94 (d, J = 6.2 Hz, 2H), 8.55 (d, J = 2.3 Hz, 1H), 8.36 (dd, J = 8.9, 2.1 Hz, 1H), 8.14 (d, J = 6.1 Hz, 2H), 7.64 (d, J = 8.9 Hz, 1H), 4.35 (t, J = 6.1 Hz, 2H), 3.59 (t, J = 4.6 Hz, 4H), 2.46 (m, 2H), 2.39 (m, 4H), 1.96 (t, J = 6.7 Hz, 2H)。ESI-HR-MS m/z: calcd. for C20H20O3N4F3 [M+H]+ 421.148 20, found 421.147 52。
于250 mL茄形瓶中, 称取3, 5-二氯-4-羟基苯甲酸甲酯(4.42 g, 20 mmol) 和4-(3-氯丙基)吗啉(3.94 g, 10 mmol) 及碳酸钾(2.07 g, 15 mmol) 加入40 mL DMF, 80 ℃油浴中反应, TLC监测反应完成后, 减压蒸除部分溶剂, 加入饱和食盐水、乙酸乙酯萃取, 保留有机相, 减压浓缩得黄色油状物。收率: 76%。
于100 mL茄形瓶中, 称取中间体3, 5-二氯-4-(3-吗啉基丙氧基)苯甲酸甲酯(348 mg, 1 mmol) 用甲醇(6 mL) 溶解, 加入水合肼(80%, 80 mg, 2 mmol) 加热回流。TLC监测反应, 反应完全后, 蒸干溶剂, 加水过滤, 得中间体。收率: 82%。1H NMR (400 MHz, DMSO-d6) δH: 9.91 (s, 1H), 7.91 (s, 2H), 4.56 (s, 2H), 4.08 (t, J = 6.3 Hz, 2H), 3.68~3.50 (m, 4H), 2.48 (overlap, 2H), 2.36 (brs, 4H), 1.93 (m, 2H)。
于100 mL茄形瓶中, 称取中间体3, 5-二氯-4-(3-吗啉基丙氧基)苯并酰肼(398 mg, 1 mmol) 和4-吡啶甲醛(118 mg, 1.1 mmol), 加入无水乙醇(10 mL), 滴加两滴冰醋酸, 加热回流反应。TLC监测反应, 待反应完成, 蒸干溶剂, 加入碳酸氢钠溶液, 析出固体, 抽滤得到棕色固体。收率: 19%。mp: 96~98 ℃。1H NMR (400 MHz, DMSO-d6) δH: 8.64~8.58 (m, 2H), 8.36 (s, 1H), 7.99 (s, 2H), 7.62 (d, J = 5.5 Hz, 2H), 4.08 (t, J = 6.3 Hz, 2H), 3.52 (t, J = 4.6 Hz, 4H), 2.47 (t, J = 5.5 Hz, 2H), 2.33 (t, J = 4.6 Hz, 4H), 1.91 (p, J = 6.6 Hz, 2H)。13C NMR (100 MHz, DMSO-d6) δC: 161.81, 153.71, 150.65, 146.35, 142.22, 131.92, 129.11, 128.94, 121.46, 72.66, 66.69, 55.00, 53.77, 27.16。ESI-HR-MS m/z: calcd. for C20H23O3N4Cl2 [M+H]+ 437.114 17, found 437.115 60。
于100 mL茄形瓶中, 称取中间体3, 5-二氯-4-(3-吗啉基丙氧基)苯并酰肼(348 mg, 1 mmol)、4-吡啶甲亚胺酸甲酯(136 mg, 1 mmol)、加入到MeOH (10 mL) 溶液中, 室温搅拌2 h, 析出固体, 过滤得白色固体。收率: 64%。mp: 191~192 ℃。1H NMR (400 MHz, DMSO-d6) δH: 10.22 (s, 1H), 8.66 (d, J = 5.8 Hz, 2H), 8.01 (s, 2H), 7.79 (d, J = 6.1 Hz, 2H), 6.99 (s, 2H), 4.10 (t, J = 6.3 Hz, 2H), 3.68~3.51 (m, 4H), 2.53 (overlap, 2H), 2.38 (brs, 4H), 1.95 (m, 2H)。ESI-HR-MS m/z: calcd. for C20H24O3N5Cl2 [M+H]+ 452.125 07, found 452.125 00。
于250 mL茄形瓶中, 称取3, 5-二氯-4-羟基苯甲醛(1.91 g, 10 mmol) 与4-(3-氯丙基)吗啉(1.64 g, 10 mmol) 及碳酸钾(2.07 g, 15 mmol) 加入50 mL乙腈溶液中, 回流反应12 h。反应完毕, 蒸干溶剂, 加入饱和食盐水、乙酸乙酯萃取, 有机相减压浓缩得到中间体。收率: 82%。1H NMR (400 MHz, DMSO-d6) δH: 9.86 (s, 1H), 7.97 (s, 2H), 4.10 (t, J = 6.3 Hz, 2H), 3.52 (m, 4H), 2.33 (m, 6H), 1.91 (m, 2H)。
于100 mL茄形瓶中, 称取中间体3, 5-二氯- 4-(3-吗啉基丙氧基)苯甲醛(159 mg, 0.5 mmol) 和异烟肼(69 mg, 0.5 mmol) 加入无水乙醇(10 mL) 溶液中, 滴加两滴冰醋酸, 加热回流反应。TLC监测反应, 待反应完成, 蒸干溶剂, 加入碳酸氢钠溶液, 析出固体, 抽滤得到粉色固体。收率: 30%。mp: 90~92 ℃。1H NMR (400 MHz, DMSO-d6) δH: 12.28 (s, 1H), 8.79 (d, J = 5.9 Hz, 2H), 8.38 (s, 1H), 7.86 (s, 2H), 7.84~7.80 (m, 2H), 4.09 (t, J = 6.3 Hz, 2H), 3.60~3.53 (m, 4H), 2.37 (s, 4H), 1.94 (p, J = 6.6 Hz, 2H)。13C NMR (100 MHz, DMSO-d6) δC: 162.34, 152.49, 150.83, 146.13, 140.64, 132.45, 129.54, 127.94, 122.03, 72.64, 66.68, 55.01, 53.77, 27.14。ESI-HR-MS m/z: calcd. for C20H23O3N4Cl2 [M+H]+ 437.114 17, found 437.115 66。
采用Accelrys公司的Discovery Studio 2.1软件包完成分子模拟工作。由Diverse Conformation Generation模块产生分子构象, Conformation Method设置为“BEST”, 其他参数采用缺省值; 采用Dock ligands (CDocker) 程序进行分子对接, Input Receptor: 1N5X; Conformation Method设置为“NONE”; 其他参数采用缺省值。
采用前期建立的方法测定各化合物对XO-催化黄嘌呤(XAN) 水解作用的影响[11]。将待测样品溶于DMSO中, 配制成10 μmol·L-1溶液。反应体系中含缓冲液(3.5 mmol·L-1 KH2PO4、15.2 mmol·L-1 K2HPO4、0.25 mmol·L-1 EDTA, pH = 7.4)、3 U·L-1 XO、50 μmol·L-1 XAN及不同浓度的化合物(含终浓度0.01% DMSO)。以不含XO的反应体系作为空白对照。在37 ℃下反应20 min, 采用酶标仪(Multiskan Spectrum Microboard, Thermo Scientific) 检测293 nm波长下吸光度(OD值), 计算XO催化XAN水解生成的尿酸量及化合物对XO活性的抑制百分率。采用Prism 5.0软件sigmoidal dose response curve (various slope) 拟合IC50值。
作者贡献: 王宏占完成部分化学工作及文章初稿撰写; 杨亚军完成部分化学工作; 杨颖完成分子模拟部分; 叶菲、田金英完成生物活性测试工作; 张传明、肖志艳负责实验设计及文章修改。
利益冲突: 本文所有作者声明不存在利益冲突关系。
  • 内蒙古自治区自然科学基金项目(2021MS08006)
  • 包头医学院博士科研启动基金项目(BYJJ-BSJJ 202007)
  • 包头医学院科研创新项目(BYKYCX202415)
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doi: 10.16438/j.0513-4870.2024-0820
  • 接收时间:2024-08-26
  • 首发时间:2025-11-07
  • 出版时间:2025-01-12
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  • 收稿日期:2024-08-26
  • 修回日期:2024-11-04
基金
内蒙古自治区自然科学基金项目(2021MS08006)
包头医学院博士科研启动基金项目(BYJJ-BSJJ 202007)
包头医学院科研创新项目(BYKYCX202415)
作者信息
    1.内蒙古科技大学包头医学院药学院, 内蒙古 包头 014040
    2.中国医学科学院、北京协和医学院药物研究所, 活性物质发现与适药化研究北京市重点实验室, 北京 100050
    3.中国医学科学院、北京协和医学院药物研究所, 新药作用机制研究与药效评价北京市重点实验室, 北京 100050

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*张传明, Tel: 18947221989, E-mail:
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2种不同金属材料的力学参数

Family
属数
Number of
genus
种数
Number of
species
占总种数比例
Percentage of
total species (%)

Genus
种数
Number of
species
占总种数比例
Percentage of total
species (%)
鹅膏菌科Amanitaceae 2 11 5.26 鹅膏菌属 Amanita 10 4.78
小菇科 Mycenaceae 2 12 5.74 丝盖伞属 Inocybe 5 2.39
多孔菌科 Polyporaceae 8 14 6.70 蜡蘑属 Laccaria 5 2.39
红菇科 Russulaceae 3 23 11.00 小皮伞属 Marasmius 6 2.87
小菇属 Mycena 11 5.26
光柄菇属 Pluteus 5 2.39
红菇属 Russula 17 8.13
栓菌属 Trametes 5 2.39
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