CN101786979B - 抗耐甲氧西林金黄葡萄球菌的(±)-marinopyrroleA及其合成衍生物 - Google Patents

抗耐甲氧西林金黄葡萄球菌的(±)-marinopyrroleA及其合成衍生物 Download PDF

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CN101786979B
CN101786979B CN2010101132828A CN201010113282A CN101786979B CN 101786979 B CN101786979 B CN 101786979B CN 2010101132828 A CN2010101132828 A CN 2010101132828A CN 201010113282 A CN201010113282 A CN 201010113282A CN 101786979 B CN101786979 B CN 101786979B
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秦勇
宋颢
程春伟
邓祥林
王晓琳
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Sichuan University
Chongqing Zen Pharmaceutical Co Ltd
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Abstract

本发明涉及如化学结构式1所示的天然产物(±)-marinopyrrole A合成衍生物对甲氧西林敏感金葡球菌(MSSA)、耐甲氧西林金葡球菌(MRSA)、耐万古霉素肠球菌(VRE)、苯唑西林异质耐药金葡球菌(ORSA)和表皮葡萄球菌(MRSE)等革兰氏阳性菌的抑制活性。此外,本发明还涉及(±)-marinopyrrole A及其衍生物的制备方法。本发明所述制备方法具有合成路线短、经济高效的优点。体外抗菌研究表明,新合成的(±)-marinopyrrol A的衍生物对甲氧西林敏感金葡球菌(MSSA)、耐甲氧西林金葡球菌(MRSA)、耐万古霉素肠球菌(VRE)、苯唑西林异质耐药金葡球菌(ORSA)和表皮葡萄球菌(MRSE)等革兰氏阳性菌具有优良的抗菌活性,它们具有潜在的临床应用前景。

Description

抗耐甲氧西林金黄葡萄球菌的(±)-marinopyrroleA及其合成衍生物
技术领域
本发明涉及用于治疗抗耐甲氧西林金黄葡萄球菌、甲氧西林敏感金黄葡萄球菌、表皮葡萄球菌、耐万古霉素肠球菌等革兰氏阳性菌感染的天然产物(±)-marinopyrrole A的合成衍生物。此外,本发明还涉及marinopyrrole A及其新的合成衍生物的制备方法。
背景技术
抗生素耐药性的产生和治疗是困扰医学界多年的难题,其中由耐甲氧西林金黄葡萄球菌(Methicillin-resistant Staphylococcus aureus,MRSA)导致的耐药性更是近年来的医学难题之一。耐甲氧西林金黄葡萄球菌是由金黄葡萄球菌变种而来的一种独特菌株,可引起人类表皮、软组织、黏膜、骨和关节等多种组织器官的严重感染,能抵抗包括甲氧西林及含β-内酰胺结构的头孢抗生素。该病菌感染主要来源于医院(Hospital-associated MRSA,HA-MRSA),于1961年在英国被首次发现后,即以惊人的速度在世界范围内蔓延,每年至少有十万人因感染MRSA而住院治疗,成为全世界医院内感染的主要病原菌。而在医院环境中,MRSA往往能抵御消毒剂的杀伤,造成患者创口感染,严重时甚至致人死亡;同时,由于近年来广谱高效抗生素在临床的大量使用,MRSA的耐药性明显增高,使得MRSA的治疗更显困难,因此该病菌在医院内又被称作“超级病菌”。目前,MRSA感染已超过AIDS、结核和病毒性肝炎成为患者首位致死原因,近年来还出现了社区型MRSA(Community-associated MRSA,CA-MRSA)和耐万古霉素(VRE)的相关报道,严重威胁公共卫生安全。
鉴于耐甲氧西林金黄葡萄球菌对患者健康造成的巨大危害,寻找对其具有高效抑制活性的药物一直是医疗卫生和药物化学领域的研究热点之一。近年来,科学家们对MRSA的耐药机制进行了大量的研究,并发现了一些具有临床应用价值的新化合物,根据不同的抗菌机理,目前治疗MRSA感染的药物主要可分为以下几大类(Malina,S.I.;Andres,R.;Hartmut,L.Curr.Opin.Crit.Care 2005,11,481):(一)、糖肽类抗生素。糖肽类抗生素是目前治疗MRSA感染的主要药物,其代表药物有万古霉素(vancomycin)、去甲万古霉素(norvancomycin)、替考拉宁(teicoplanin)、telavancin、oritavancin和dalbavancin。该类抗生素能与病菌细胞壁前体肽聚末端的丙氨酰丙氨酸高亲和力结合,阻断病菌细胞壁的主要成分高分子肽聚糖骨架的形成,从而抑制病菌细胞壁的合成,杀灭病菌。其中telavancin除能抑制细胞壁的合成外,还能破坏病菌细胞膜,从而降低细菌耐药性的产生(Projan,S.J.;Bradford,P.A.Curr.Opin.Microbiol.2007,10,441);(二)、噁唑烷酮类抗生素,该类抗生素的主要代表药物是利奈唑胺(linezolid)。与其他抗生素通常作用于蛋白质合成的最后阶段不同,利奈唑胺主要抑制病菌蛋白质合成的第一阶段,该药物能选择性与病菌核糖体结合,扰乱mRNA的转录,从而抑制病菌蛋白质的合成,阻止病菌的生长和增殖。该药物也是首个被批准用于临床的噁唑烷酮类抗生素(Prasad,J.V.N.V.Curr.Opin.Microbiol.2007,10,454);(三)、β-内酰胺类抗生素,该类抗生素是目前研究最多的一类抗MRSA感染药物,其代表药物包括ceftobiprole、ceftaroline等。研究表明,青霉素结合蛋白2a(PBP2a)是一种特定的MRSA结合蛋白,该蛋白决定了金葡菌株的耐甲氧西林能力。通常情况下,PBP2a与β-内酰胺抗菌素结合能力很低,使得MRSA对大多数的β-内酰胺抗菌素耐药,而ceftobiprole和ceftaroline则能高亲和力地与金黄色葡萄球菌的青霉素结合蛋白(PBP2a)结合,阻止其细胞中肽聚糖的交联,从而抑制细菌细胞壁的合成(Kontou,P.;Kuti,J.L.;Nicolau,D.P.Formulary,2008,43,66;Murthy B.;Schmitt-Hoffmann A.Clin.Pharmacokinet 2008,47,21;Jones,M.E.Clin.Microbiol.Infec.2007,13(Suppl 2),17;Kanafani Z.A.;Corey,G.R.Future Microbiol.2009,4,25;Zhanel,G.G.et al.Drugs,2009,69,809);(四)、脂肽类抗生素,其代表药物是达托霉素(daptomycin)。达托霉素通过扰乱细胞膜对氨基酸的转运,从而阻碍细菌细胞壁肽聚糖的生物合成,改变细胞质膜的性质;同时,它还能通过破坏细菌的细胞膜,使其内容物外泄而达到杀菌的目的。达托霉素独特的作用机制使得细菌对其产生耐药性的可能性大大减低(Raja,A.;LaBonte,J.;Lebbos,J.;Kirkpatrick,P.,Nature Rev.Drug Discov.2003,2,943);(五)、甘氨酰四环素类,其代表药物是替加环素(tigecycline)。该药物通过与细菌30S核糖体结合,阻止tRNA的进入,干扰氨基酸肽链的形成,进而阻断病菌蛋白质的合成,限制病菌的生长;(六)、复方制剂。达福普丁(dalfopristin)和奎奴普丁(quinupristin)均作用于病菌的核糖体,分别抑制蛋白质合成的早期阶段和后期阶段,两种联合应用时能表现出良好的协同作用,从而有效地抗MRSA感染。
如上所述,虽然目前各大制药公司陆续开发出一些治疗MRSA感染的新型药物,但迄今为止,已在临床使用多年的糖肽类抗生素代表药物万古霉素仍然是治疗MRSA感染的一线治疗药物。近年来,随着耐万古霉素MRSA个案的出现和各种药物毒副作用的逐渐显现,寻找新的具有抗MRSA活性的化合物已成为药物化学研究的热点之一。
对活性天然产物进行结构改造是发现新药的重要途径之一。Fenical等人2008年从海洋链霉菌(marine Streptomyces sp.)中提取的双吡咯化合物marinopyrrole A和marinopyrrole B为结构新颖的具有双吡咯结构的天然产物。活性筛选发现,上述两种新化合物具有与万古霉素一致的抗MRSA活性(对MRSA:(-)-marinopyrrole A,(+)-marinopyrrole A和(-)-marinopyrrole B的MIC90分别为0.61μM,0.31μM和1.1μM;万古霉素的MIC90为0.14-0.27μM),是具有良好药物开发前景的明星分子(William Fenical et al.Organic Lett.2008,10,629)。鉴于该类化合物重要的生物活性和药物开发价值,一经发现即吸引了众多药物学家的关注,但由于其骨架新颖,目前尚未见相关合成及构效关系研究报道。
Figure GSA00000037083200031
X=H,Marinopyrrole A(1a)
X=Br,Marinopyrrole B
双吡咯化合物marinopyrrole A和marinopyrrole B的化学结构
发明内容
本发明的目的在于提供通式1所示的marinopyrrole A及其衍生物。
本发明的第二的目的在于提供通式1所示的marinopyrrole A及其衍生物的制备方法。
本发明的第三个目的在于通式1所示的marinopyrroleA及其衍生物在治疗抗耐甲氧西林金黄葡萄球菌、甲氧西林敏感金黄葡萄球菌、表皮葡萄球菌、耐万古霉素肠球菌等革兰氏阳性菌感染中的应用。
一种如通式1所示的marinopyrrole A及其衍生物,具有如下结构:
Figure GSA00000037083200032
其中:Ar基团的2-位取代基R为氢、氟、羟基、甲氧基、三氟甲基,优选为羟基;R1、R2、R3在苯环的3-,4-,5-位、各自独立地代表氢、卤素、羟基、硝基、烷氧基、氰基、叠氮、胺基、磺酸基及其酰胺、羧酸及其酰胺、含不同取代基的砜、含氮和硫的五、六元环杂环、及其可药用的有机盐和无机盐。Ar中R为羟基,R1、R2和R3为如前定义的基团之一或其组合。
上述结构通式中,R=OH,R1=R2=R3=H时,即为天然产物marinopyrroleA的结构。
本发明还提供了一种式1所表示化合物的制备方法,
Figure GSA00000037083200033
包括如下步骤:
a):化合物2和3在酸性条件下完成双吡咯骨架的构建,生成化合物4;
Figure GSA00000037083200041
此步骤中所述酸为对甲基苯磺酸。反应溶剂为甲苯或苯,反应温度为110℃(参见Li,M.D.et al.Chem.Industry Engineer Pro.2006,10,1201)。
b):化合物4在碱性条件下对吡咯氮进行保护;
Figure GSA00000037083200042
式5所示物质中,R’表示胺基保护基,胺基保护基是化学合成中常用的手段,保护办法也很多,本发明中,选用保护基以容易离去为原则,R’可以为对甲基苯磺酰基、对硝基苯磺酰基、苄基、乙酰基,优选为对甲基苯磺酰基。本发明在碱性条件下进行胺基保护,所使用碱可以为4-二甲氨基吡啶/二异丙基乙胺,氢化钠、氢氧化钠/四丁基硫酸氢铵、4-二甲氨基吡啶、三乙胺,优选碱为4-二甲氨基吡啶/二异丙基乙胺。溶剂可以为二氯甲烷、四氢呋喃。优选二氯甲烷。
c):利用还原剂将式5表示的物质还原成式6表示的物质;
Figure GSA00000037083200043
此步骤中R’基的含义与步骤b)中相同。所述还原剂可以为氢化铝锂、硼氢化钠、二异丁基氢化铝,优选使用二异丁基氢化铝。溶剂可以为二氯甲烷、四氢呋喃,优选二氯甲烷。反应温度-78℃至40℃,优选25℃。
d):利用氧化剂将式6表示的物质氧化成式7表示的物质;
Figure GSA00000037083200051
此步骤中R’基的含义与步骤b)中相同。所述氧化剂可以为2-碘酰基苯甲酸、戴斯-马丁氧化剂、二甲基亚砜/三乙基胺/草酰氯、氯铬酸吡啶鎓盐,优选氧化剂为2-碘酰基苯甲酸。反应溶剂可以为二氯甲烷、二甲亚砜,优选二甲亚砜。反应温度为25℃至100℃,优选50℃。
e):化合物7制备得到化合物8;
此步骤中R’基的含义与步骤b)中相同。Ar中R1、R2、R3的含义与通式1所述含义相同。可通过两种途径获得式8所示化合物。途径一:通过格式加成反应,首先将溴代芳基烃制备成格式试剂后再与式7所示物质反应,制备得到式8所示物质;该途径下溶剂可以为四氢呋喃、甲苯,优选四氢呋喃。反应温度为-10度至80度,优选温度为0度。途径二:将溴代芳基烃与正丁基锂或叔丁基锂制备成锂盐后,再通过烷基化反应由式7所示物质制备得到式8所示物质。该途径的溶剂可以为四氢呋喃、乙醚,优选四氢呋喃。反应温度为-78℃至50℃,优选-78℃。
途径一:
途径二:
Figure GSA00000037083200054
f):利用氧化剂将式8表示的物质氧化成式9表示的物质;
Figure GSA00000037083200061
此步骤中R’基的含义与步骤b)中相同。Ar中R1、R2、R3的含义与通式1所述含义相同。所述氧化剂可以为2-碘酰基苯甲酸、戴斯-马丁氧化剂(Dess-Martin氧化剂)、二甲基亚砜/三乙基胺/草酰氯、氯铬酸吡啶鎓盐、三氧化铬。优选氧化剂为三氧化铬。反应溶剂可以为二氯甲烷、二甲亚砜、吡啶,优选吡啶。反应温度为25℃至100℃。优选30℃。
g):在碱性条件下,式9所示物质的吡咯氮保护基离去,得到式10所示物质;
Figure GSA00000037083200062
此步骤中R’基的含义与步骤b)中相同。Ar中R1、R2、R3的含义与通式1所述含义相同。所述碱性条件为氢氧化钾,溶剂可以为甲醇、四氢呋喃或两者的混合溶剂。优选溶剂为甲醇和四氢呋喃的混合溶剂,最优混合比例为1∶1。
h):在氯代试剂的作用下,式10所示物质氯代生成式1;
此步骤中Ar中R1、R2、R3的含义与通式1所述含义相同。所述氯代试剂为N-氯代丁二酰亚胺,溶剂可以为二氯甲烷、乙腈,优选乙腈。反应温度为0℃至80℃,优选45℃。
i):当通式1的2-位为甲氧基取代基时,经脱甲基后制备得到2-位为羟基取代的化合物。
Figure GSA00000037083200064
此步骤中脱甲基试剂可以为三氯化铝、三溴化硼,优选三溴化硼。溶剂可以为二氯甲烷。反应温度为-40℃为25℃。优选温度为-25℃。
本发明所述的制备通式1所示化合物的方法具有合成路线短、经济高效的优点,仅需9步反应即可以30%的总收率完成天然产物marinopyrrole A的合成。采用相似的合成方法即能顺利完成其衍生物的制备。
申请人对本发明所涉及化合物1进行的体外抗菌活性筛选实验表明,化合物对甲氧西林敏感金葡球菌(MSSA)、耐甲氧西林金葡球菌(MRSA)、耐万古霉素肠球菌(VRE)、苯唑西林异质耐药金葡球菌(ORSA)和表皮葡萄球菌(MRSE)等革兰氏阳性菌具有较强的抗菌活性,而对革兰氏阴性菌如大肠埃希菌ESBLs(E.coli)、肺炎克雷伯菌ESBLs(K.pneumoniae)和铜绿假单胞菌(P.aeruginosa)几乎没有抑菌作用,结果见表一。
Figure GSA00000037083200081
具体实施方式
以下所述仅是本发明的优选实施方式,应当指出,对于本技术领域的普通技术人员来说,在不脱离本发明原理得前提下,还可以做出若干改进和润饰,这些改进和润饰也应视为本发明的保护范围。
实施实例1  化合物5的制备
将化合物2(2.00g,10.50mmol)溶于20mL甲苯中,依次加入化合物3(3.40g,15.74mmol)和对甲苯磺酸(26mg,0.14mmol)。反应液回流10h后冷却至室温,饱和碳酸氢钠溶液调pH=7,乙酸乙酯萃取水相(3×20mL),合并有机相,无水硫酸钠干燥,过滤,减压蒸除溶剂,粗品经硅胶柱分离纯化(10%乙酸乙酯/石油醚)得淡黄色粉末状固体4(2.40g,产率82%)。Mp 70-71.6℃;1H NMR(CDCl3,400MHz)δ1.11(t,J=7.2Hz,3H),1.23(t,J=7.2Hz,3H),4.10-4.19(m,4H),6.26(dd,J=4.0,2.8Hz,1H),6.31(t,J=2.8Hz,1H),6.89(t,J=1.6Hz,1H),6.91(t,J=3.2Hz,1H),7.07(dd,J=4.0,2.0Hz,1H),9.32(br,s,1H)ppm;13C NMR(CDCl3,100MHz)δ13.8,14.2,59.6,60.2,108.5,109.6,117.4,117.7,120.6,124.5,129.7,130.1,160.1,160.6ppm;HRMS(M+Na+)calcd for C14H16N2NaO4 299.1008,found 299.0987;IR(KBr)3300,2987,1713,1672,1421,1282,1138,733,608cm-1.
实施实例2  化合物5的制备
将化合物4(2.00g,7.25mmol)溶解于20mL干燥CH2Cl2中,0℃下加入DMAP(4.40g,36.07mmol)和DIPEA(4.70g,36.43mmol),搅拌10min后缓慢加入对甲苯磺酸酰氯(11.50g,72.33mmol),反应液升至室温。反应8h后将反应液倒入水中,用CH2Cl2萃取水相(3×25mL),合并有机相,无水硫酸钠干燥,过滤,减压蒸除溶剂,粗品经硅胶柱分离纯化(5%乙酸乙酯/石油醚)得淡黄色固体5(2.96g,产率95%)。Mp 87-89℃;1H NMR(400MHz,CDCl3)δ0.91(t,J=7.2Hz,3H),0.94(t,J=7.2Hz,3H),2.44(s,3H),3.97(q,J=7.2Hz,2H),4.07(q,J=7.2Hz,2H),6.22(dd,J=4,2.8Hz,1H),6.37(d,J=3.6Hz,1H),6.81(dd,J=2.8,2.0Hz,1H),7.03(q,J=2.0Hz,1H),7.35(d,J=8.4Hz,2H),7.65(d,J=3.2Hz,1H),7.93(d,J=8.4Hz,2H)ppm;13C NMR(CDCl3,100MHz)δ13.4,13.9,21.6,59.8,60.9,109.0,111.1,118.1,120.7,124.7,125.3,128.2,128.2,129.5,129.5,129.7,134.3,135.7,145.1,158.2,160.1ppm;HRMS(M+Na+)calcd for C21H22N2NaO6S 453.1096,found 453.1097;IR(KBr)3436,3141,2982,1727,1579,1441,1374,1179,1101,1024,748,671,591cm-1.
实施实例3  化合物6的制备
Figure GSA00000037083200101
在冰水浴中,氮气保护下,将DIBAL(4.67mL,4.70mmol)缓慢滴加到化合物5(500mg,1.16mmol)的干燥CH2Cl2(5mL)溶液中。滴加完毕后将反应液升至室温继续反应6h后用饱和Na2SO4溶液淬灭反应,有大量白色沉淀生成。过滤除去沉淀,乙酸乙酯洗涤滤饼(3×50mL),合并滤液,减压蒸除溶剂,粗品经硅胶柱分离纯化(33%乙酸乙酯/石油醚)得白色固体6(370mg,产率92%)。Mp 103-106℃;1H NMR(400MHz,CDCl3)δ2.44(s,3H),2.63(br,s,1H),3.48(br,s,1H),4.31(s,2H),4.42(s,2H),6.19(t,J=3.6Hz,1H),6.29(dd,J=3.6,1.6Hz,1H),6.33(d,J=3.6Hz,1H),6.63(q,J=1.6Hz,1H),7.30(d,J=3.2Hz,1H),7.35(d,J=8.4Hz,2H),7.85(d,J=8.4Hz,2H)ppm;13C NMR(CDCl3,100MHz)δ21..6,52.3,55.3,108.6,109.9,111.4,121.4,124.2,127.2,127.7,127.7,130.1,130.1,130.1,134.3,135.5,145.7ppm;HRMS(M+Na+)calcd for C17H18N2NaO4S 369.0885,found 369.0881;IR(KBr)3324,2928,1646,1592,1453,1375,1148,1087,1006,670,602cm-1.
实施实例4  化合物7的制备
Figure GSA00000037083200102
将化合物6(2.90g,8.38mmol)溶于20mL干燥DMSO中,将IBX(7.04g,25.14mmol)分批加入反应液中。将反应升温至70℃反应6h后冷却至室温,过滤,乙酸乙酯洗涤滤饼(3×50mL),滤液倒入水中,用乙酸乙酯萃取水相(3×15mL),合并有机相,无水硫酸钠干燥,过滤,减压蒸除溶剂,粗品经硅胶柱分离纯化(12%乙酸乙酯/石油醚)得淡黄色固体7(2.58g,产率90%)。Mp 138-140℃;1H NMR(400MHz,CDCl3)δ2.44(s,3H),6.41(dd,J=4.0,2.4Hz,1H),6.45(d,J=3.2Hz,1H),7.02-7.03(m,1H),7.10(dd,J=4.0,1.6Hz,1H),7.37(d,J=8.8Hz,2H),7.70(d,J=3.6Hz,1H),7.87(d,J=8.4Hz,2H),9.49(s,1H),9.71(s,1H)ppm;13CNMR(CDCl3,50MHz)δ21.7,111.3,111.6,124.1,125.7,127.5,127.9,127.9,130.1,130.1,132.3,133.0,134.7,136.6,146.3,177.2,179.4ppm;HRMS(M+Na+)calcd for C17H14N2NaO4S 365.0572,found 365.0530;IR(KBr)3444,3137,2923,1668,1562,1447,1361,1180,1014,752,668cm-1.
实施实例5  化合物9a的制备
Figure GSA00000037083200111
氮气保护下,将邻甲氧基溴苯(4.37g,23.39mmol)缓慢加入含镁条的干燥THF溶液中,于45℃下反应1.5h。0℃下,将新鲜制备的格氏试剂缓慢滴加到化合物7(1.00g,2.92mmol)的干燥THF(25mL)溶液中,5h后用饱和Na2SO4溶液(5mL)淬灭反应,乙酸乙酯萃取水相(3×20mL),合并有机相,无水硫酸钠干燥,过滤,减压蒸除溶剂,粗品经碱性Al2O3柱层析分离纯化后(12%乙酸乙酯/石油醚),得化合物8。将化合物8溶于15mL干燥吡啶中,加入CrO3(1.17g,11.70mmol)。室温下反应4h后,减压蒸除溶剂,乙酸乙酯溶解固体,过滤,乙酸乙酯洗涤滤饼(3×30mL),合并滤液,真空浓缩,粗品经硅胶柱分离纯化(12%乙酸乙酯/石油醚)得淡黄色固体9a(1.12g,产率69%)。Mp 113-115℃;1HNMR(400MHz,CDCl3)δ2.44(s,3H),3.68(s,3H),3.75(s,3H),5.83(t,J=3.2Hz,1H),6.27(d,J=2.4Hz,1H),6.43(d,J=3.6Hz,1H),6.66-6.75(m,3H),6.90(d,J=8.4Hz,2H),7.10(d,J=7.2Hz,1H),7.23-7.26(m,1H),7.33-7.36(m,4H),7.57(d,J=3.6Hz,1H),7.96(d,J=8.0Hz,2H)ppm;13C NMR(CDCl3,50MHz)δ21.3,55.5,55.5,109.3,111.7,111.9,112.0,119.7,119.7,119.7,122.8,125.4,126.8,128.0,128.0,128.7,129.2,129.9,129.9,130.6,131.2,132.0,132.4,132.5,133.6,135.7,145.4,156.5,157.8,182.6,182.9ppm;HRMS(M+Na+)calcd for C31H26N2NaO6S577.1409,found 577.1386;IR(KBr)3451,3139,2926,3843,1646,1596,1487,1412,1367,1176,1020,754cm-1.
实施实例6  化合物10的制备
Figure GSA00000037083200121
将化合物9a(58mg,0.10mmol)溶于MeOH∶THF=1∶1混合溶液(2mL)中,加入KOH(24mg,0.42mmol),室温下反应1h后用稀盐酸调pH=7。乙酸乙酯萃取水相(3×10mL),合并有机相,无水硫酸钠干燥,过滤,减压蒸除溶剂,粗品经硅胶柱分离纯化(14%乙酸乙酯/石油醚)得淡黄色粉末状固体10a(40mg,产率95%)。Mp 175-176℃;1H NMR(400MHz,CDCl3)δ3.72(s,3H),3.80(s,3H),5.81(dd,J=4.0,2.8Hz,1H),6.33-6.35(m,2H),6.65(dd,J=2.8,2.0Hz,1H),6.69-6.72(m,2H),6.93-6.97(m,2H),7.07(t,J=3.2Hz,1H),7.17-7.23(m,3H),7.39(td,J=7.2,1.6Hz,1H),9.43(br,s,1H)ppm;13C NMR(CDCl3,50MHz)δ55.3,55.6,108.4,110.6,110.6,111.4,119.5,119.9,122.9,123.2,125.9,128.0,128.7,129.0,129.4,129.7,130.8,130.9,131.2,132.3,156.5,157.1,183.4,183.8ppm;HRMS(M+Na+)calcd forC24H20N2NaO4 423.1321,found 423.1310;IR(KBr)3363,3069,2934,2841,1625,1491,1437,1407,1250,1164,1027,726cm-1.
实施实例7  化合物1b的制备
Figure GSA00000037083200122
将化合物10a(400mg,1.0mmol)溶于5mL干燥乙腈中,加入NCS(534mg,4.0mmol)。于40℃反应30h后,将反应液倒入水中,乙酸乙酯萃取水相(3×10mL),合并有机相,无水硫酸钠干燥,过滤,减压蒸除溶剂,粗品经硅胶柱分离纯化(11%乙酸乙酯/石油醚)得淡黄色粉末状固体1b(401mg,产率75%)。Mp 193-194℃;1H NMR(400MHz,CDCl3)δ3.74(s,3H),3.79(s,3H),6.32(s,1H),6.68(t,J=7.2Hz,1H),6.77(d,J=8.4Hz,1H),6.96(t,J=7.6Hz,2H),7.18(dt,J=7.2,1.2Hz,2H),7.25(td,J=8.0,1.6Hz,1H),7.41(td,J=8.0,1.6Hz,1H),9.76(br,s,1H)ppm;13C NMR(CDCl3,50MHz)δ55.5,55.7,110.4,110.0,111.6,111.6,119.7,119.8,120.2,120.7,124.0,125.0,125.7,126.5,127.9,128.7,129.3,130.9,131.6,131.7,156.6,157.2,182.4,182.4ppm;HRMS(M+H+)calcd for C24H17Cl4N2O4536.9942,found 536.9940;IR(KBr)3447,2931,2856,1639,1598,1489,1430,1402,1250,1023,929,754,646cm-1.
实施实例7  化合物1a的制备
Figure GSA00000037083200131
氮气保护下,将化合物1b(100mg,0.19mmol)溶于2mL干燥CH2Cl2中,在-78℃下将BBr3(187mg,0.75mmol)的CH2Cl2溶液(1mL)缓慢滴加入反应液中,于-78℃反应半小时后用0.5mL甲醇淬灭反应。反应液升至室温后,将反应液倒入水中,CH2Cl2萃取水相(3×10mL),合并有机相,无水硫酸钠干燥,过滤,减压蒸除溶剂,粗品经硅胶柱分离纯化(10%乙酸乙酯/石油醚)得黄色固体1a(90mg,产率95%)。Mp 205-207℃;1H NMR(400MHz,CDCl3)δ6.52(t,J=7.2Hz,1H),6.71(s,1H),6.88-6.93(m,2H),7.02(d,J=8.4Hz,1H),7.35(td,J=7.2,1.2Hz,1H),7.47-7.53(m,2H),7.57(dd,J=8.0,1.6Hz,1H),10.00(s,1H),10.42(s,1H),11.20(s,1H)ppm;13C NMR(CDCl3,50MHz)δ110.6,112.7,117.7,118.3,118.6,118.9,118.9,119.0,120.3,120.4,123.2,123.8,124.1,128.8,130.3,131.8,136.1,136.2,161.0,162.4,185.9,186.8ppm;HRMS(M+Na+)calcd for C22H12Cl4N2NaO4530.9449,found 530.9455;IR(KBr)3302,3247,2923,2854,1622,1592,1441,1406,1257,1026,867,764,584cm-1.
实施实例8  化合物9b~9e的制备
参照化合物9a的合成方法制备化合物9b~9e。
9b:使用醛7(500mg,1.46mmol),间甲氧基溴苯(2.16g,11.69mmol)和CrO3(584mg,5.84mmol)制备得到浅黄色固体9b(10%乙酸乙酯/石油醚,320mg,产率40%)。Mp 127-129C;1H NMR(400MHz,CDCl3)δ2.45(s,3H),3.65(s,3H),3.83(s,3H),5.95(dd,J=4.0Hz,2.8Hz,1H),6.41(d,J=3.6Hz,1H),6.58(dd,J=4.0Hz,1.6Hz,1H),6.75(dd,J=2.4,1.6Hz,1H),6.93(dd,J=8.4,2.8Hz,1H),7.05-7.10(m,2H),7.17-7.21(m,3H),7.26-7.37(m,2H),7.36(d,J=8.0Hz,2H),7.58(d,J=3.2Hz,1H),7.93(d,J=8.4Hz,2H)ppm;13C NMR(100MHz,CDCl3)δ21.7,55.1,55.3,109.6,111.2,112.6,113.7,118.2,120.5,121.9,122.3,123.4,124.6,126.1,128.2,128.2,129.0,129.1,129.7,129.7,131.1,132.1,132.5,135.7,138.1,139.8,145.4,159.2,159.3,184.0,186.0ppm;HRMS(M+H+)calcd for C31H27F2N2O6S 555.1590,found 555.1621;IR(KBr)3738,3420,2926,2844,1640,1586,1429,1265,1133,1038,747,670,590cm-1.
9c:使用醛7(200mg,0.58mmol),对甲氧基溴苯(858mg,4.64mmol)和CrO3(232mg,2.32mmol)制备得到棕黄色固体9c(10%乙酸乙酯/石油醚,80mg,产率25%)。Mp 166-169℃;1H NMR(400MHz,CDCl3)δ2.42(s,3H),3.72(s,3H),3.85(s,3H),5.94(t,J=3.2Hz,1H),6.39(d,J=2.8Hz,1H),6.55(d,J=2.4Hz,1H),6.64(d,J=4.4Hz,2H),6.71(t,J=3.2Hz,1H),6.91(d,J=8.0Hz,2H),7.34(d,J=8.0Hz,2H),7.49(d,J=3.2Hz,1H),7.71(dd,J=4.8,3.2Hz,4H),7.92(d,J=8.0Hz,2H)ppm;13C NMR(100MHz,CDCl3)δ21.7,55.3,55.4,109.2,111.3,113.2,113.2,113.3,113.3,122.2,123.5,126.1,128.1,128.1,129.6,129.6,129.8,131.2,131.2,131.4,131.6,131.6,131.8,132.0,132.0,135.7,145.2,162.7,163.6,183.3,185.2ppm;HRMS(M+H+)calcd for C31H27N2O6S 555.1590,found 555.1584;IR(KBr)3446,3133,2933,1650,1571,1423,1261,1170,1137,1026,766,674,577cm-1.
9d:使用醛7(200mg,0.58mmol),2,4-二甲氧基溴苯(998mg,4.64mmol)和CrO3(232mg,2.32mmol)制备得到黄色固体9d(12%乙酸乙酯/石油醚,71mg,产率20%)。Mp 178-180℃;1H NMR(400MHz,DMSO-d6)δ2.43(s,3H),3.57(s,3H),3.67(s,3H),3.76(s,3H),3.80(s,3H),5.96(dd,J=4.0,2.8Hz,1H),6.22(dd,J=3.6,1.2Hz,1H),6.33-6.37(m,2H),6.48-6.52(m,2H),6.58(d,J=2.0Hz,1H),6.85(t,J=1.6Hz,1H),7.03(d,J=8.4Hz,1H),7.29(d,J=8.4Hz,1H),7.47(d,J=8.4Hz,2H),7.71(d,J=3.6Hz,1H),7.88(d,J=8.4Hz,2H)ppm;13C NMR(50MHz,DMSO-d6)δ21.2,55.5,55.6,55.6,55.6,98.1,98.9,104.2,105.0,109.1,112.1,119.9,121.8,122.0,123.7,127.7,127.7,128.6,129.9,129.9,130.5,130.8,131.9,132.6,133.3,135.6,145.3,158.6,160.5,162.1,164.3,182.0,182.0ppm;HRMS(M+Na+)calcd for C33H30N2NaO8S 637.1621,found 637.1611;IR(KBr)3448,3139,2938,2841,1739,1646,1602,1458,1407,1211,1172,1019,864,829,670,586cm-1.
9e:使用醛7(100mg,0.29mmol),溴苯(360mg,2.32mmol)和CrO3(116mg,1.16mmol)制备得到黄色固体9e(13%乙酸乙酯/石油醚,86mg,产率60%)。Mp 194-196℃;1H NMR(400MHz,CDCl3)δ2.45(s,3H),5.92(dd,J=2.8,1.2Hz,1H),6.42(d,J=3.6,1H),6.53(dd,J=4.0,2.0Hz,1H),6.72(dd,J=2.4,1.6Hz,1H),7.19(t,J=8.0Hz,2H),7.35-7.42(m,3H),7.45(d,J=8.4Hz,2H),7.53(t,J=7.2Hz,1H),7.58(d,J=3.6Hz,1H),7.65-7.71(m,4H),7.94(d,J=8.4Hz,2H)ppm;13C NMR(100MHz,CDCl3)δ21.6,109.4,111.2,123.3,124.5,126.1,127.9,127.9,128.0,128.0,128.2,128.2,129.2,129.2,129.4,129.4,129.6,129.6,131.1,131.7,132.0,132.5,133.0,135.7,136.7,138.6,145.3,184.3,186.2ppm;HRMS(M+H+)calcd for C29H22N2O4S495.1379,found 495.1378;IR(KBr)3442,3146,2923,1650,1596,1469,1280,1176,724,666,584cm-1.
实施实例9  化合物9f~9m的制备
Figure GSA00000037083200151
9f:氮气保护下,将邻氟溴苯(4.09g,23.39mmol)溶于30mL干燥THF中,于-78℃下将t-BuLi(21.59mL,1.3M in n-pentane,28.07mmol)缓慢滴加入反应液中。于-78℃搅拌40分钟后,将醛7(1.00g,2.92mmol)的THF溶液(5mL)缓慢滴加入反应液中。于-78℃反应6小时后,饱和NH4Cl水溶液淬灭反应。将反应液升至室温后,用乙酸乙酯萃取反应液(20mL×3),合并有机相,无水硫酸钠干燥,过滤,减压蒸除溶剂,粗品溶于30mL吡啶中,加入CrO3(1.17g,11.68mmol),室温下反应4h后,减压蒸除溶剂,乙酸乙酯溶解固体,过滤,乙酸乙酯洗涤滤饼(3×30mL),合并滤液,真空浓缩,粗品经硅胶柱分离纯化(13%乙酸乙酯/石油醚)得淡黄色固体9f(155mg,产率10%)。Mp 170-174℃;1H NMR(400MHz,CDCl3)δ2.46(s,3H),5.93(dd,J=4.0,2.8Hz,1H),6.40(t,J=2.0Hz,1H),6.44(d,J=3.6Hz,1H),6.78(t,J=2.0Hz,1H),6.88(t,J=10.0Hz,1H),6.95(t,J=7.2Hz,1H),7.09(t,J=8.8Hz,1H),7.15(t,J=7.2Hz,1H),7.27-7.48(m,6H),7.67(d,J=3.6Hz,1H),8.00(d,J=8.0Hz,2H)ppm;13C NMR(100MHz,CDCl3)δ21.7,109.9,111.4,115.8,116.1,116.2,123.6,123.6,124.0,125.7,128.3,128.3,129.6,129.7,130.0,131.4,132.1,132.2,132.8,133.7,133.8,135.6,145.3,158.9,158.5,160.5,160.8,180.8,180.5ppm;HRMS(M+H+)calcd for C29H21F2N2O4S 531.1190,found 531.1183;IR(KBr)3446,3135,2923,1651,1410,1178,754,584cm-1.
参照9f的方法制备9g~9m
9g:使用间氟溴苯(803mg,4.64mmol)、t-BuLi(4.11mL,1.3M in n-pentane,5.34mmol)、醛7(200mg,0.58mmol)和CrO3(232mg,2.32mmol)制备得到白色固体9g(13%乙酸乙酯/石油醚,46mg,产率15%)。Mp 142-146℃;1H NMR(400MHz,CDCl3)δ2.46(s,3H),5.96(dd,J=4.0,2.8Hz,1H),6.41(d,J=3.6Hz,1H),6.58(dd,J=4.0,1.6Hz,1H),6.72(dd,J=6.8,1.6Hz,1H),7.04-7.08(m,1H),7.09-7.18(m,1H),7.21-7.26(m,1H),7.35-7.43(m,5H),7.45-7.48(m,2H),7.62(d,J=3.2Hz,1H),7.95(d,J=8.4Hz,2H)ppm;13C NMR(100MHz,CDCl3)δ21.7,109.9,111.0,115.8,115.9,116.0,116.1,118.7,118.9,120.0,120.2,123.6,124.9,124.9,125.2,128.2,128.2,129.7,129.7,129.8,130.8,132.3,135.6,138.6,140.5,145.5,161.0,163.4,182.8,184.7ppm;HRMS(M+H+)calcd for C29H21F2N2O4S 531.1190,found 531.1200;IR(KBr)3419,3153,2923,2856,1654,1585,1431,1348,1175,809,670,591cm-1.
9h:使用对氟溴苯(401mg,2.32mmol)、t-BuLi(2.05mL,1.3M in n-pentane,2.67mmol)、醛7(100mg,0.29mmol)和CrO3(116mg,1.16mmol)制备得到棕色固体9h(11%乙酸乙酯/石油醚,84mg,产率55%)。Mp 185-188℃;1H NMR(400MHz,CDCl3)δ2.45(s,3H),5.96(t,J=3.2Hz,1H),6.38(d,J=3.6Hz,1H),6.55(d,J=3.2Hz,1H),6.71(t,J=3.2Hz,1H),6.85(t,J=8.4Hz,2H),7.11(t,J=8.4Hz,2H),7.37(d,J=8.0Hz,2H),7.56(d,J=3.6Hz,1H),7.71-7.77(m,4H),7.94(d,J=8.0Hz,2H)ppm;13C NMR(100MHz,CDCl3)δ21.7,109.7,111.1,115.1,115.1,115.3,115.3,123.0,124.6,128.2,128.2,129.7,129.7,129.8,130.9,131.6,131.7,132.0,132.1,132.2,132.3,135.6,145.5,163.8,164.3,166.3,166.9,182.9,184.7ppm;HRMS(M+H+)calcd for C29H21F2N2O2S 531.1190,found 531.1188;IR(KBr)3441,3141,2924,1658,1626,1417,1240,756,673,586cm-1.
9i:使用邻溴三氟甲苯(476mg,2.32mmol)、t-BuLi(2.05mL,1.3M in n-pentane,2.67mmol)、醛7(100mg,0.29mmol)和CrO3(116mg,1.16mmol)制备得到浅黄色固体9i(11%乙酸乙酯/石油醚,18mg,产率10%)。Mp 85-88℃;1H NMR(400MHz,CDCl3)δ2.46(s,3H),5.80(dd,J=4.4,2.8Hz,1H),6.20(dd,J=4.0,1.6Hz,1H),6.35(d,J=3.2Hz,1H),6.66(t,J=5.2Hz,1H),7.27-7.43(m,5H),7.54-7.59(m,4H),7.72-7.74(m,1H),7.80(d,J=3.6Hz,1H),8.00(d,J=8.4Hz,2H)ppm;13C NMR(100MHz,CDCl3)δ21.7,109.7,111.4,124.7,126.7,126.7,127.6,128.4,128.4,128.6,129.5,129.6,129.6,129.8,129.8,130.6,131.0,131.0,131.0,133.5,135.4,135.7,136.6,138.0,145.3,150.3,151.9,161.2,161.9,182.4,183.0ppm;HRMS(M+H+)calcd forC31H21F6N2O4S 631.1126,found 631.1131;IR(KBr)3422,3134,2924,1652,1415,1316,1145,675,584cm-1.
9j:使用对溴三氟甲苯(476mg,2.32mmol)、t-BuLi(2.05mL,1.3M in n-pentane,2.67mmol)、醛7(100mg,0.29mmol)和CrO3(116mg,1.16mmol)制备得到白色固体9j(12%乙酸乙酯/石油醚,95mg,产率52%)。Mp 157-159℃;1H NMR(400MHz,CDCl3)δ2.46(s,3H),5.99(t,J=3.2Hz,1H),6.43(d,J=3.6Hz,1H),6.53(dd,J=4.0,1.2Hz,1H),6.77(t,J=3.2Hz,1H),7.38(d,J=8.0Hz,2H),7.44(d,J=8.0Hz,2H),7.62(d,J=3.2Hz,1H),7.67-7.77(m,6H),7.92(d,J=8.0Hz,2H)ppm;13C NMR(100MHz,CDCl3)δ21.7,110.1,111.1,123.8,124.9,125.0,125.0,125.0,125.1,125.2,125.2,125.2,125.9,128.2,128.2,129.4,129.4,129.6,129.6,129.8,129.8,130.8,132.7,133.0,133.9,135.4,139.7,141.4,145.7,183.1,185.0ppm;HRMS(M+H+)calcd for C31H21F6N2O4S 631.1126,found 631.1132;IR(KBr)3740,3422,2960,2923,1642,1567,1415,1321,1134,1023,806,671,587cm-1.
9k:使用1-溴萘(476mg,2.32mmol)、t-BuLi(2.05mL,1.3M in n-pentane,2.67mmol)、醛7(100mg,0.29mmol)和CrO3(116mg,1.16mmol)制备得到浅黄色固体9k(12%乙酸乙酯/石油醚,78mg,产率45%)。Mp 101-104℃;1H NMR(400MHz,CDCl3)δ2.45(s,3H),5.64(t,J=2.8Hz,1H),6.15(d,J=3.2Hz,1H),6.53(d,J=3.2Hz,1H),6.73(d,J=2.8Hz,1H),7.07(d,J=6.8Hz,1H),7.22(t,J=7.6Hz,1H),7.30(t,J=7.6Hz,1H),7.35(d,J=8.0Hz,2H),7.47-7.49(m,4H),7.73(d,J=3.6Hz,1H),7.78-7.89(m,5H),7.96(d,J=8.0Hz,2H),8.07(d,J=8.0Hz,1H),8.51-8.53(m,1H)ppm;13C NMR(100MHz,CDCl3)δ21.7,109.3,111.5,123.9,124.1,124.1,125.3,125.4,125.4,126.2,126.3,126.9,127.4,128.0,128.1,128.2,128.4,128.4,128.6,129.6,129.6,130.7,130.7,130.8,132.4,132.8,133.0,133.4,133.6,133.6,134.2,135.8,136.3,145.3,145.3,185.3,186.3ppm;HRMS(M+H+)calcd for C37H27N2O4S 595.1692,found595.1700;IR(KBr)3440,3052,2923,1640,1413,1370,1176,904,786,671,587cm-1.
9l:使用2-溴噻吩(374mg,2.32mmol)、t-BuLi(2.05mL,1.3M inn-pentane,2.67mmol)、醛7(100mg,0.29mmol)和CrO3(116mg,1.16mmol)制备得到黄色固体9l(12%乙酸乙酯/石油醚,20mg,产率14%)。Mp 174-176℃;1H NMR(400MHz,CDCl3)δ2.43(s,3H),6.01(t,J=2.8Hz,1H),6.36(d,J=2.8Hz,1H),6.77-6.79(m,2H),6.90(d,J=2.8Hz,1H),7.14(t,J=2.8Hz,1H),7.35(d,J=7.2Hz,2H),7.49-7.51(m,3H),7.64-7.68(m,2H),7.95(d,J=8.0Hz,2H)ppm;13C NMR(100MHz,CDCl3)δ21.7,109.7,111.1,121.6,123.8,127.7,128.0,128.3,128.3,129.7,129.7,130.0,130.9,131.7,132.9,135.1,135.5,136.0,143.3,143.9,145.5,145.5,176.0,177.2,178.3ppm;HRMS(M+H+)calcd for C25H19N2O4S3507.0507,found 507.0500;IR(KBr)3443,3107,2922,1629,1514,1417,1365,1174,1143,1044,812,740,592cm-1.
9m:使用1-Ts-吲哚(628mg,2.32mmol)、t-BuLi(2.05mL,1.3M in n-pentane,2.67mmol)、醛7(100mg,0.29mmol)和CrO3(116mg,1.16mmol)制备得到黄色固体9m(12%乙酸乙酯/石油醚,51mg,产率20%)。Mp 269-272℃;1H NMR(400MHz,CDCl3)δ3.37(s,3H),2.47(s,3H),2.48(s,3H),6.56(d,J=3.2Hz,1H),6.62(dd,J=4.0,1.6Hz,1H),6.73(s,1H),7.04(s,1H),7.10-7.15(m,2H),7.24-7.28(m,3H),7.34-7.43(m,7H),7.49(dd,J=8.0,4.0Hz,2H),7.78(d,J=3.6Hz,1H),7.95-7.98(m,5H),8.04-8.08(m,3H)ppm;13C NMR(100MHz,CDCl3)δ21.4,21.5,21.6,109.9,111.4,114.3,114.9,115.8,118.7,122.1,123.3,123.4,123.8,124.6,126.3,126.4,126.7,127.2,127.5,127.5,127.5,127.9,127.9,128.2,128.6,128.6,129.1,129.1,129.2,129.2,129.4,129.4,131.5,134.4,134.8,135.1,135.6,136.4,136.7,137.2,137.8,138.3,144.6,144.9,145.1,173.0,174.9ppm;HRMS(M+H+)calcd for C47H37N4O8S3 881.1774,found 881.1767;IR(KBr)2959,2926,2855,1647,1444,1373,1179,751,672,577cm-1.
实施实例10  化合物10b~10m的制备
参照化合物10a的合成方法制备化合物10b~10m。
10b:使用9b(320mg,0.57mmol)和KOH(129mg,2.31mmol)制备得到浅黄色固体10b(12%乙酸乙酯/石油醚,212mg,产率93%)。Mp 51-54℃;1H NMR(400MHz,CDCl3)δ3.58(s,3H),3.82(s,3H),6.03(dd,J=3.6,2.8Hz,1H),6.33(t,J=2.8Hz,1H),6.60(dd,J=4.0,1.2Hz,1H),6.83(t,J=2.0Hz,1H),6.88-6.90(m,1H),6.96(t,J=1.2Hz,1H),7.02-7.12(m,5H),7.14(t,J=1.2Hz,1H),7.28(t,J=8.0Hz,1H),9.55(br,s,1H)ppm;13C NMR(100MHz,CDCl3)δ54.9,55.2,109.2,109.3,111.7,113.6,118.2,118.3,120.3,121.9,123.0,123.4,124.3,128.6,128.6,130.6,131.1,131.8,139.0,139.7,158.9,159.0,184.0,184.9ppm;HRMS(M+H+)calcd forC24H21N2O4401.1501,found 401.1513;IR(KBr)3305,2931,2838,1627,1584,1407,1249,1039,747cm-1.
10c:使用9c(80mg,0.14mmol)和KOH(32mg,0.57mmol)制备得到浅黄色固体10c(12%乙酸乙酯/石油醚,53mg,产率95%)。Mp 78-83℃;1H NMR(400MHz,CDCl3)δ3.77(s,3H),3.87(s,3H),6.03(t,J=2.8Hz,1H),6.29(t,J=2.8Hz,1H),6.58(dd,J=4.0,1.2Hz,1H),6.61(d,J=8.4Hz,2H),6.76(t,J=2.0Hz,1H),6.89(d,J=8.4Hz,2H),7.06(t,J=3.2Hz,1H),7.50(d,J=8.8Hz,2H),7.64(d,J=8.8Hz,2H),9.43(br,s,1H)ppm;13C NMR(100MHz,CDCl3)δ55.3,55.4,109.1,109.6,113.1,113.1,113.1,113.1,121.9,122.3,124.6,129.9,130.2,130.5,130.5,130.7,131.2,131.4,131.7,131.7,162.3,162.7,183.4,183.9ppm;HRMS(M+H+)calcd for C24H21N2O4401.1501,found 401.1510;IR(KBr)3742,3418,2928,1602,1508,1412,1257,1158,1029,882,747cm-1.
10d:使用9d(71mg,0.11mmol)和KOH(26mg,0.46mmol)制备得到浅黄色固体10d(14%乙酸乙酯/石油醚,48mg,产率94%)。Mp 203-205℃;1H NMR(400MHz,CDCl3)δ3.67(s,3H),3.72(s,3H),3.77(s,3H),3.83(s,3H),5.85(dd,J=4.0,2.8Hz,1H),6.16(dd,J=8.0,2.0Hz,1H),6.21(d,J=2.0Hz,1H),6.25(t,J=2.8Hz,1H),6.37(dd,J=4.0,1.6Hz,1H),6.42(dd,J=8.4,2.4Hz,1H),6.45(d,J=2.0Hz,1H),6.63(t,J=2.4Hz,1H),6.99(t,J=3.2Hz,1H),7.20(dd,J=10.8,8.8Hz,2H),9.62(br,s,1H)ppm;13C NMR(100MHz,CDCl3)δ55.3,55.3,55.4,55.5,98.0,98.7,103.2,104.0,1083,110.3,120.9,122.3,122.4,122.4,125.8,130.7,131.0,131.7,131.8,132.5,158.6,159.3,162.3,162.3,182.7,183.0ppm;HRMS(M+H+)calcd for C26H25N2O6461.1713,found 461.1731;IR(KBr)3375,3124,2953,2843,1628,1605,1563,1504,1411,1284,1027,869,827cm-1.
10e:使用9e(86mg,0.17mmol)和KOH(38mg,0.68mmol)制备得到棕黄色固体10e(14%乙酸乙酯/石油醚,55mg,产率96%)。Mp 160-161℃;1H NMR(400MHz,CDCl3)δ5.97(t,J=3.2Hz,1H),6.27(t,J=2.8Hz,1H),6.52(dd,J=4.0,1.6HZ,1H),6.77(d,J=1.2Hz,1H),7.05-7.12(m,3H),7.27-7.37(m,3H),7.45-7.49(m,3H),7.53(d,J=7.6Hz,2H),10.23(br,s,1H)ppm;13C NMR(50MHz,CDCl3)δ109.1,109.3,122.6,123.6,124.3,127.8,127.8,127.9,127.9,128.1,128.1,128.9,128.9,130.2,131.1,131.3,131.7,132.7,138.1,138.6,183.6,184.3ppm;HRMS(M+Na+)calcd for C22H16N2NaO2363.1109,found 363.1127;IR(KBr)3371,3294,3111,1632,1308,1504,1356,1163,886,768,605cm-1.
10f:使用9f(100mg,0.19mmol)和KOH(42mg,0.75mmol)制备得到棕黄色固体10f(14%乙酸乙酯/石油醚,65mg,产率92%)。Mp 79-81℃;1H NMR(40)0MHz,CDCl3)δ5.91(t,J=2.8Hz,1H),6.37(t,J=2.8Hz,1H),6.42(d,J=4.0Hz,1H),6.77(d,J=4.0Hz,1H),6.86(t,J=8.8Hz,1H),6.90(t,J=7.6Hz,1H),7.10(t,J=8.8Hz,1H),7.12-7.31(m,4H),7.34(t,J=7.2Hz,1H),7.40-7.45(m,1H),9.51(br,s,1H)ppm;13C NMR(100MHz,CDCl3)δ109.0,110.5,115.9,116.1,123.5,123.5,123.5,123.6,124.0,124.0,124.1,125.6,129.3,130.1,131.7,131.8,131.9,133.2,157.9,160.4,180.5,180.9ppm;HRMS(M+H+)calcd for C22H15F2N2O2377.1102,found377.1112;IR(KBr)3334,2923,1626,1405,1369,1224,883,753cm-1.
10g:使用9g(46mg,0.09mmol)和KOH(20mg,0.36mmol)制备得到浅黄色固体10g(14%乙酸乙酯/石油醚,31mg,产率93%)。Mp 70-73℃;1H NMR(400MHz,CDCl3)δ6.05(t,J=3.2Hz,1H),6.35(t,J=2.8Hz,1H),6.61(d,J=2.8Hz,1H),6.81(t,J=2.8Hz,1H),7.04(t,J=4.4Hz,1H),7.09-7.15(m,3H),7.21-7.26(m,3H),7.36-7.40(m,2H),9.43(br,s,1H)ppm;13C NMR(100MHz,CDCl3)δ109.7,109.9,114.6,114.9,116.0,116.2,118.2,118.6,123.1,123.4,123.6,123.7,124.5,125.0,129.4,129.5,130.7,132.3,140.6,160.8,163.2,183.6ppm;HRMS(M+Na+)calcd for C22H14F2N2NaO2 399.0921,found 399.0912;IR(KBr)3298,3069,2932,1630,1583,1407,1132,886,886,746cm-1.
10h:使用9h(84mg,0.16mmol)和KOH(36mg,0.64mmol)制备得到黄色固体10h(13%乙酸乙酯/石油醚,55mg,产率92%)。Mp 184-188℃;1HNMR(400MHz,CDCl3)δ6.06(t,J=4.0Hz,1H),6.31(t,J=2.8Hz,1H),6.59(dd,J=4.0,1.6Hz,1H),6.78-6.82(m,3H),7.06-7.12(m,3H),7.48-7.51(m,2H),7.61-7.64(m,2H),9.45(br,s,1H)ppm;13C NMR(100MHz,CDCl3)δ109.5,109.5,114.7,114.9,114.9,115.1,122.8,123.5,124.3,130.5,130.6,131.0,131.8,131.9,133.8,134.6,163.3,163.8,165.8,166.3,183.0,183.7ppm;HRMS(M+H+)calcd for C22H15F2N2O2377.3635,found 377.1102;IR(KBr)3295,3116,2923,1628,1602,1504,1409,1356,1226,1096,843,749cm-1.
10i:使用9i(18mg,0.03mmol)和KOH(7mg,0.12mmol)制备得到棕黄色固体10i(14%乙酸乙酯/石油醚,14mg,产率95%)。Mp 77-81℃;1HNMR(400MHz,CDCl3)δ5.69(dd,J=4.0,2.4Hz,1H),6.25(dd,J=4.0,1.6Hz,1H),6.31(d,J=2.8Hz,1H),6.54(t,J=2.0Hz,1H),7.16(t,J=2.8Hz,1H),7.21(t,J=3.6Hz,1H),7.32(t,J=8.0Hz,2H),7.49-7.60(m,4H),7.75-7.77(m,1H),9.87(br,s,1H)ppm;13C NMR(100MHz,CDCl3)δ109.3,110.8,122.3,124.4,124.4,124.7,125.1,126.2,126.2,126.7,126.8,127.8,128.3,129.0,129.5,129.8,130.9,131.0,131.7,133.3,136.4,138.2,183.1,183.2ppm;HRMS(M+H+)calcd for C24H15F6N2O2 477.1038,found 477.0998;IR(KBr)3265,2924,1646,1619,1407,1315,1128,879,771cm-1.
10j:使用9j(95mg,0.15mmol)和KOH(34mg,0.60mmol)制备得到棕黄色固体10j(11%乙酸乙酯/石油醚,64mg,产率90%)。Mp 165-168℃;1H NMR(400MHz,CDCl3)1H NMR(400MHz,CDCl3)δ6.09(t,J=2.8Hz,1H),6.34(t,J=2.8Hz,1H),6.53(dd,J=4.0,1.2Hz,1H),6.86(t,J=4.0Hz,1H),7.16(t,J=2.8Hz,1H),7.38(d,J=8.0Hz,2H),7.51(d,J=8.0Hz,2H),7.55(d,J=8.0Hz,2H),7.64(d,J=8.0Hz,2H),9.79(br,s,1H)ppm;13C NMR(100MHz,CDCl3)δ110.0,110.0,123.6,123.8,124.4,124.6,124.7,124.7,124.7,124.9,124.9,124.9,125.0,127.9,127.9,129.3,129.3,129.9,130.7,132.4,140.7,141.3,183.0,183.4ppm;HRMS(M+Na+)calcd for C24H14F6N2NaO2 499.0857,found 499.0841;IR(KBr)3279,3109,2921,1639,1604,1553,1414,1329,1126,1067,783cm-1.
10k:使用9k(78mg,0.13mmol)和KOH(29mg,0.52mmol)制备得到浅黄色固体10k(14%乙酸乙酯/石油醚,52mg,产率91%)。Mp 72-74℃;1H NMR(400MHz,CDCl3)δ5.72(t,J=2.8Hz,1H),6.16(dd,J=4.0,1.6Hz,1H),6.45(t,J=2.8Hz,1H),6.68(t,J=2.8Hz,1H),6.70-6.78(m,1H),7.15(t,J=8.0Hz,1H),7.20(t,J=3.2Hz,2H),7.38-7.48(m,4H),7.56(d,J=7.2Hz,1H),7.76(d,J=8.4Hz,1H),7.81-7.83(m,3H),8.05(d,J=8.4Hz,1H),8.18(d,J=8.4Hz,1H),9.59(br,s,1H)ppm;13C NMR(100MHz,CDCl3)δ108.9,109.1,110.3,123.6,123.8,123.9,124.1,125.4,125.4,126.0,126.1,126.2,126.7,127.2,127.6,128.0,128.0,130.3,130.4,130.5,130.7,131.3,132.4,132.4,132.5,133.4,134.9,136.4,185.3,185.6ppm;HRMS(M+H+)calcd forC30H21N2O2441.1603,found 441.1588;IR(KBr)3401,3284,3049,1732,1630,1560,1409,1359,1052,887,789,744,640cm-1.
1n:使用9l(20mg,0.04mmol)和KOH(9mg,0.16mmol)制备得到黄色固体1n(14%乙酸乙酯/石油醚,13mg,产率93%)。Mp 213-215℃;1H NMR(400MHz,DMSO-d6)δ6.16(t,J=2.8Hz,1H),6.31(t,J=2.8Hz,1H),6.76(t,J=4.0Hz,1H),6.88(t,J=2.8Hz,1H),6.96(d,J=2.8Hz,1H),7.04-7.06(m,2H),7.10(t,J=2.8Hz,1H),7.43(d,J=4.8Hz,1H),7.57(d,J=3.6Hz,1H),7.61(d,J=4.8Hz,1H),9.33(br,s,1H)ppm;13C NMR(100MHz,CDCl3)δ109.0,109.8,120.7,123.3,123.7,127.9,128.3,129.2,130.9,131.3,132.2,133.1,133.6,133.8,142.9,143.8,175.5,175.9ppm;HRMS(M+H+)calcd for C18H13N2O2S2 353.0418,found 353.0420;IR(KBr)3445,3256,3105,2961,2920,1589,1413,1262,1081,1041,807cm-1.
1o:使用9m(51mg,0.06mmol)和KOH(34mg,0.60mmol)制备得到黄色固体1o(14%乙酸乙酯/石油醚,16mg,产率60%)。Mp 157-161℃;1H NMR(400MHz,CDCl3)δ6.30(t,J=3.6Hz,1H),6.04(t,J=3.2Hz,1H),6.44(d,J=1.2Hz,1H),6.54(d,J=1.6Hz,1H),6.99(dd,J=4.0,1.2Hz,1H),7.04-7.12(m,5H),7.22(t,J=8.0Hz,1H),7.30(d,J=5.2Hz,2H),7.49(t,J=8.4Hz,2H),9.13(br,s,1H),9.23(br,s,1H),9.43(br,s,1H)ppm;13C NMR(100MHz,DMSO-d6)δ107.8,109.0,109.6,112.6,120.1,120.3,120.5,122.4,122.6,122.7,122.8,124.3,124.7,124.8,124.9,127.0,127.1,127.2,128.9,131.5,132.1,134.6,135.6,137.6,175.1,175.4ppm;HRMS(M+H+)calcd for C26H18N4O2 441.1327,found 441.1308;IR(KBr)3434,2924,2854,1603,1569,1527,1426,1132,1027,745cm-1.
实施实例11  化合物1c,1d,1f~1m的制备
Figure GSA00000037083200221
参照化合物1b的合成方法制备化合物1c~1m。
1c:使用10b(30mg,0.08mmol)和NCS(43mg,0.32mmol)制备得到白色固体1c(3%乙酸乙酯/石油醚,24mg,产率56%)。Mp 56-59℃;1H NMR(400MHz,CDCl3)δ3.85(s,3H),3.86(s,3H),6.89(s,1H),7.11-7.14(m,1H),7.23-7.25(m,1H),7.31(dd,J=2.0Hz,0.8Hz,1H),7.36-7.47(m,5H)ppm;13C NMR(100MHz,CDCl3)δ55.4,55.5,111.9,112.0,113.1,113.6,113.7,114.4,118.4,118.8,120.8,121.8,122.6,123.9,124.9,129.3,130.1,130.2,132.8,138.8,159.5,160.0,164.9,183.1ppm;HRMS(M+K+)calcd for C24H16Cl4KN2O4 574.9501,found 574.9504;IR(KBr)3431,2960,2925,1729,1642,1582,1435,1266,1207,1041,806cm-1.
1d:使用10c(53mg,0.13mmol)和NCS(71mg,0.52mmol)制备得到黄色固体1d(4%乙酸乙酯/石油醚,45mg,产率65%)。Mp 67-72℃;1H NMR(400MHz,CDCl3)δ3.88(s,3H),3.91(s,3H),6.83(s,1H),6.95-7.02(m,4H),7.81-7.84(m,4H)ppm;13C NMR(100MHz,CDCl3)δ55.5,55.7,111.3,111.7,112.7,113.5,113.7,113.7,114.7,114.7,118.0,120.0,123.7,130.2,130.5,131.6,131.6,132.2,134.0,134.0,163.2,164.0,165.6,182.4ppm;HRMS(M+K+)calcd forC24H16Cl4KN2O4574.9501,found 574.9650;IR(KBr)3448,2925,2847,1722,1600,1510,1438,1258,1172,1026,845cm-1.
1f:参照化合物1b的合成方法使用10d(48mg,0.10mmol)和NCS(80mg,0.60mmol)制备得到黄色固体1f(4%乙酸乙酯/石油醚,50mg,产率75%)。Mp 106-108℃;1H NMR(400MHz,CDCl3)δ3.78(s,3H),3.81(s,3H),3.90(s,3H),3.9δ(s,3H),6.38(s,1H),6.44(s,1H),6.50(s,1H),7.18(s,1H),7.30(s,1H),8.26(br,s,1H)ppm;13C NMR(100MHz,CDCl3)δ56.0,56.0,56.3,60.4,95.8,96.5,111.6,112.8,112.9,119.0,120.0,120.2,120.7,124.2,125.2,129.9,130.7,131.5,157.6,157.6,158.0,158.4,178.1,178.1,180.2,180.3ppm;HRMS(M+H+)calcd forC26H19Cl6N2O6 664.9374,found 664.9387;IR(KBr)3415,3215,2939,1638,1600,1432,1402,1288,1211,1026,612cm-1.
1g:参照化合物1b的合成方法使用10e(55mg,0.16mmol)和NCS(86mg,0.64mmol)制备得到黄色固体1g(10%乙酸乙酯/石油醚,56mg,产率74%)。Mp 118-122℃;1H NMR(400MHz,CDCl3)δ5.30(br,s,1H),6.44(s,1H),7.10(t,J=6.8Hz,2H),7.32(t,J=7.6Hz,1H),7.37-7.43(m,4H),7.47-7.55(m,3H)ppm;13C NMR(100MHz,CDCl3)δ110.6,112.0,120.6,120.8,123.7,124.6,124.7,127.8,127.8,127.9,127.9,128.3,128.3,129.4,129.4,129.8,131.8,132.6,136.9,137.1,183.5,183.9ppm;HRMS(M+Na+)calcd for C22H12Cl4N2NaO2 498.9551,found 498.9543;IR(KBr)3442,3211,2930,1637,1399,1240,1013,706cm-1.
1h:参照化合物1b的合成方法使用10f(30mg,0.08mmol)和NCS(53mg,0.40mmol)制备得到浅黄色固体1h(4%乙酸乙酯/石油醚,20mg,产率50%)。Mp 46-48℃;1H NMR(400MHz,CDCl3)δ6.78(s,1H),7.16(t,J=8.8Hz,1H),7.20-7.25(m,2H),7.33(t,J=7.6Hz,1H),7.48-7.54(m,2H),7.65-7.75(m,2H)ppm;13C NMR(100MHz,CDCl3)δ116.3,116.5,116.9,117.2,121.2,121.4,124.0,124.1,125.0,125.0,130.4,132.2,133.0,133.1,136.7,136.8,158.5,160.2,161.0,161.1,162.8,179.7ppm;HRMS(M+K+)calcd for C22H10Cl4F2KN2O2 550.9102,found 550.9101;IR(KBr)3437,2923,2854,1727,1649,1608,1412,1284,1098,925,753cm-1.
1i:参照化合物1b的合成方法使用10g(31mg,0.08mmol)和NCS(53mg,0.40mmol)制备得到浅黄色固体li(3%乙酸乙酯/石油醚,26mg,产率65%)。Mp 38-41℃;1H NMR(400MHz,CDCl3)δ6.89(s,1H),7.30(td,J=8.4,2.0Hz,1H),7.41-7.54(m,3H),7.55(dd,J=8.4,2.8Hz,1H),7.58-7.62(m,3H)ppm;13C NMR(100MHz,CDCl3)δ115.9,116.1,117.5,117.7,119.4,119.6,121.2,122.6,122.8,124.9,127.0,129.6,130.1,130.2,131.0,131.1,133.7,139.5,161.5,163.7,163.7,181.9ppm;HRMS(M+K+)calcd for C22H10Cl4F2KN2O2 550.9102,found 550.9216;IR(KBr)3132,2963,2632,1794,1732,1645,1588,1441cm-1.
1j:参照化合物1b的合成方法使用10h(30mg,0.08mmol)和NCS(53mg,0.40mmol)制备得到浅黄色固体1j(3%乙酸乙酯/石油醚,27mg,产率67%)。Mp 48-52℃;1HNMR(400MHz,CDCl3)δ6.85(s,1H),7.17(t,J=4.8Hz,2H),7.24(t,J=4.8Hz,2H),7.83-7.92(m,4H)ppm;13C NMR(100MHz,CDCl3)δ115.5,115.8,116.7,116.9,120.8,121.1,125.1,127.9,129.9,131.7,131.8,132.0,132.1,133.8,134.1,134.2,163.8,164.1,165.8,166.6,168.4,182.1ppm;HRMS(M+K+)calcd for C22H10Cl4F2KN2O2 550.9102,found 550.9116;IR(KBr)3438,3127,2921,1729,1643,1596,1434,1238,1152,850cm-1.
1k:参照化合物1b的合成方法使用10i(14mg,0.03mmol)和NCS(20mg,0.15mmol)制备得到黄色固体1k(4%乙酸乙酯/石油醚,11mg,产率58%)。Mp 35-39℃;1H NMR(400MHz,CDCl3)δ6.54(s,1H),7.48(t,J=3.6Hz,1H),7.47-7.49(m,3H),7.71(t,J=8.0Hz,1H),7.74-7.77(m,2H),7.88(d,J=7.2Hz,1H)ppm;13C NMR(100MHz,CDCl3)δ112.7,115.6,119.8,121.5,122.4,124.2,126.8,126.8,127.6,127.6,128.0,128.5,129.6,130.2,130.6,131.3,132.1,132.3,133.1,136.7,136.7,162.9,162.9,182.1ppm;HRMS(M+K+)calcd forC24H10Cl4KN2O2 650.9038,found 650.8985;IR(KBr)3449,2924,2855,1738,1649,1421,1316,1277,1126,924,770cm-1.
1l:参照化合物1b的合成方法使用10j(30mg,0.06mmol)和NCS(36mg,0.27mmol)制备得到白色固体1l(3%乙酸乙酯/石油醚,18mg,产率48%)。Mp 39-43℃;1H NMR(400MHz,CDCl3)δ6.87(s,1H),6.77(d,J=8.0Hz,2H),6.83(d,J=8.0Hz,2H),7.90(d,J=8.0Hz,2H),8.00(d,J=8.0Hz,2H)ppm;13C NMR(100MHz,CDCl3)δ112.6,121.7,121.7,121.9,124.4,125.4,125.5,125.5,125.5,125.9,126.3,126.3,126.3,129.4,129.4,129.5,129.6,131.4,131.4,134.1,136.3,140.6,164.1,182.3ppm;HRMS(M+K+)calcd for C24H10Cl4KN2O2 650.9038,found 650.9099;IR(KBr)2954,2923,2853,1737,1645,1436,1323,1133,1065,856,678cm-1.
1m:参照化合物1b的合成方法使用10k(25mg,0.06mmol)和NCS(32mg,0.24mmol)制备得到棕黄色固体1m(5%乙酸乙酯/石油醚,17mg,产率50%)。Mp 65-68℃;1HNMR(400MHz,CDCl3)δ6.69(s,1H),7.49-7.56(m,4H),7.63(t,J=7.2Hz,1H),7.71(t,J=6.8Hz,2H),7.79(d,J=6.4Hz,1H),7.90-7.93(m,1H),7.96(d,J=8.0Hz,1H),8.00(d,J=8.0Hz,1H),8.12-8.15(m,2H),8.60(d,J=8.4Hz,1H)ppm;13C NMR(100MHz,CDCl3)δ112.3,112.4,113.7,114.5,119.0,121.7,124.2,124.7,124.8,125.2,125.5,126.5,127.2,127.3,127.5,128.3,128.8,128.9,129.2,130.6,131.1,131.3,131.5,132.6,133.6,133.8,135.3,135.7,164.4,184.6ppm;HRMS(M+K+)calcd for C30H16Cl4KN2O2 614.9603,found 614.9597;IR(KBr)3738,3437,3054,2925,1724,1642,1433,1278,1124,906,782cm-1.
实施实例12  化合物1n的制备
Figure GSA00000037083200251
参照化合物1a的制备方法,使用1f(50mg,0.08mmol)和BBr3(74mg,0.30mmol)制备得到黄色固体1e(3%乙酸乙酯/石油醚,46mg,产率92%)。Mp 251-253℃;1H NMR(400MHz,CDCl3)δ3.92(s,3H),3.94(s,3H),6.42(s,1H),6.52(s,1H),6.72(s,1H),7.44(s,1H),7.46(s,1H),9.77(br,s,1H),11.13(s,1H),11.77(s,1H)ppm;13C NMR(100MHz,CDCl3)δ56.5,56.5,100.4,101.1,110.5,112.1,112.5,113.1,113.2,113.7,119.8,120.2,122.7,123.3,123.7,128.6,131.1,132.0,161.1,161.2,163.2,164.2,183.6,184.5ppm;HRMS(M+Na+)calcd forC24H14Cl6N2NaO6 658.8881,found 658.8830;IR(KBr)3305,2920,2851,1624,1582,1443,1276,1060,919,783cm-1.
实施实例13  化合物1的体外抗菌活性试验
采用试验菌株分别为:金葡球菌S.aureus(MRSA)(Methicllin-resistant)10株(strains);金葡球菌S.aureus(MSSA)(Methicin-suseptable)10株(strains);表皮葡萄球菌(MRSE)(Methicllin-resistant)3株(strains);屎肠球菌(Bacterococcus)2株(strains);大肠埃希菌ESBLs+(E.coli)4株(strains);肺炎克雷伯菌ESBLs+(K.penumonia)4株(strains);铜绿假单孢菌(P.aeruginosa)4株(strains);其中WHO-3(耐万古霉素的屎肠球菌)、WHO-25(苯唑西林异质耐药的金黄色葡萄球菌)、WHO-31(mecA gene和PBP2a阳性的金黄色葡萄球菌)为世界卫生组织标准菌株,由北京药品生物制品检定所赠送。质控菌株S.aureus(金葡球菌)ATCC25923、E.coli(大肠埃希菌)ATCC25922和P.aeruginosa(铜绿假单孢菌)ATCC27853购自中华人民共和国卫生部临床检测中心
菌种来源:以上临床分离菌株均为2008年6月至2009年10月在四川成都地区、北京地区及山东地区,苏州医科大学附属第一医院收集的临床分离致病菌。在收集单位经VITEK-60自动微生物鉴定仪鉴定再经本室用API 20E、20NE、Staph系列及常规方法重新鉴定。每株细菌在实验前经琼脂平板划单菌落分纯,37℃隔夜新鲜培养的菌体适当稀释用于实验。以上各株细菌均用Nitrocefin纸片(Cefinase,美国BBL公司生产)鉴定是否产β-内酰胺酶。
培养条件:葡萄球菌:MH培养基加2%Nacl,35-37℃孵育24h;其它菌种:常规MH培养基,35-37℃孵育16-18观察结果;配方:蛋白胨1%,牛肉粉0.3%,Nacl0.5%,琼脂粉1.2%。
13.1体外抗菌试验方法
13.1.1最低抑菌浓度(Minimal Inhibitory Concentration,MIC)测定:
采取美国国家临床实验室标准化委员会(Clinical and Laboratory Standards Institute CLSI,即原NCCLs)推荐的琼脂二倍稀释法:抗微生物药物敏感性试验标准操作规程(PerformanceStandards for Antimicrobial Susceptibility Testing)和中华人民共和国药效局颁布的新药(西药)临床前研究指导原则汇编(药学、药理学、毒理学)中抗菌药物药效学指导原则测定各试验药物对试验菌株的最低抑菌浓度(MIC)。判断标准见表1。
13.1.1.1体外抗菌实验药物浓度(mg/l)选择依据:
1)根据有关文献报道的MIC50,MIC90,MICrange,本次实验各实验样品的浓度设计在0.008->128mg/l。
2)根据预实验结果
设定本次实验的体外抗菌活性的药物浓度按二倍稀释在0.008,0.06,0.125-128mg/l范围内,根据实验结果再适当调整。
13.1.1.2具体操作方法:
于无菌平皿内加入1ml药液,再加入融化的50℃MH培养基14ml,混匀,使其每皿内所含药物终浓度依次为128、64、32、16、8、4、2、1、0.5、0.25、0.125、0.06、0.03、0.015、0.008mg/L;待冷却后用多点接种仪(Denley A400,England)接种细菌,接种菌量约为105CFU/ml,盖上皿盖。
葡萄球菌置于35-37℃培养箱内培养24h,观察记录结果;
肺炎链球菌于5%CO2环境35-37℃培养24h,观察记录结果;
革兰氏阴性菌及其他菌种置于35-37℃培养箱内培养18-20h,观察记录结果。
表1  几种抗生素耐药临界浓度判断标准(CLSI2007)
Figure GSA00000037083200271
CLSI2007:Performance standards for Antimicrobial Susptibility
Testing:Fourteenth information Supplement.V01.24,No.1,2007。

Claims (20)

1.一种结构如通式1所示的化合物及其可药用的有机盐和无机盐的制备方法:
Figure FSB00000924682200011
这里,Ar基团的R是在苯环的2位取代基;R1、R2、R3依次在苯环的3-位,4-位,5-位;而且,
R为甲氧基;R1、R2和R3都为氢;或
R为羟基;R1为氢,R2为甲氧基,R3为氯;或
R为氢;R1、R2和R3都为氢;或
R为氢;R1为氟,R2和R3都为氢;或
R为氢;R1为氢,R2为氟,R3为氢;或
R为氢;R1为氢,R2为三氟甲基,R3为氢;
所述的制备方法由以下步骤组成:
a):化合物2和3在酸性条件下完成双吡咯骨架的构建,生成化合物4;
Figure FSB00000924682200012
b):化合物4在碱性条件下对吡咯氮进行保护;
Figure FSB00000924682200013
c):利用还原剂将式5表示的物质还原成式6表示的物质;
Figure FSB00000924682200014
d):利用氧化剂将式6表示的物质氧化成式7表示的物质;
Figure FSB00000924682200021
e):通过格式试剂加成即途径一或有机锂试剂加成反应即途径二,通过式7所示化合物制备得到式8所示化合物;
途径一:
Figure FSB00000924682200022
途径二:
f):利用氧化剂将式8表示的物质氧化成式9表示的物质;
g):在碱性条件下,式9所示物质的吡咯氮保护基离去,得到式10所示物质;
Figure FSB00000924682200025
h):在氯代试剂的作用下,式10所示物质氯代生成式1;
Figure FSB00000924682200026
i):当通式1所示R为甲氧基时,经脱甲基后制备得到含羟基的化合物;
Figure FSB00000924682200031
这里,化合物5、化合物6、化合物7、化合物8或化合物9中的R’选自对甲基苯磺酰基、对硝基苯磺酰基、苄基、乙酰基。
2.根据权利要求1所述的制备方法,其中,步骤a)中所述的酸为对甲基苯磺酸;反应溶剂是甲苯、苯;反应温度为80至110℃。
3.根据权利要求1所述的制备方法,其中,步骤b)中所述的碱是4-二甲氨基吡啶/二异丙基乙胺,氢化钠、氢氧化钠/四丁基硫酸氢铵、4-二甲氨基吡啶、三乙胺。
4.根据权利要求1所述的制备方法,其中,步骤b)中所使用溶剂为二氯甲烷、四氢呋喃。
5.根据权利要求1所述的制备方法,其中,步骤c)中所述还原剂为氢化铝锂、硼氢化钠、二异丁基氢化铝。
6.根据权利要求1所述的制备方法,其中,步骤c)中所述溶剂为二氯甲烷、四氢呋喃。
7.根据权利要求1所述的制备方法,其中,步骤c)中所述反应温度-78℃至40℃。
8.根据权利要求1所述的制备方法,其中,步骤d)中所述氧化剂为2-碘酰基苯甲酸、戴斯—马丁氧化剂、二甲基亚砜/三乙基胺/草酰氯、氯铬酸吡啶鎓盐。
9.根据权利要求1所述的制备方法,其中,步骤d)中所述反应溶剂为二氯甲烷、二甲亚砜。
10.根据权利要求1所述的制备方法,其中,步骤d)中所述反应温度为25℃至100℃。
11.根据权利要求1所述的制备方法,其中,步骤e)中所述途径一的溶剂为四氢呋喃、甲苯;反应温度为-10℃至80℃。
12.根据权利要求11所述的制备方法,其中,步骤e)中所述途径一的溶剂为四氢呋喃。
13.根据权利要求1所述的制备方法,其中,步骤e)中所述途径二的有机锂试剂为正丁基锂或叔丁基锂;溶剂为四氢呋喃、乙醚;反应温度为-78℃至50℃。
14.根据权利要求13所述的制备方法,其中,步骤e)中所述途径二的有机锂试剂为正丁基锂或叔丁基锂;溶剂为四氢呋喃;反应温度为-78℃至50℃。
15.根据权利要求1所述的制备方法,其中,步骤f)中所述氧化剂为2-碘酰基苯甲酸、戴斯—马丁氧化剂、二甲基亚砜/三乙基胺/草酰氯、氯铬酸吡啶鎓盐、三氧化铬。
16.根据权利要求1所述的制备方法,其中,步骤f)中所述反应溶剂为二氯甲烷、二甲亚砜、吡啶。
17.根据权利要求1所述的制备方法,其中,步骤f)中所述反应温度为25℃至100℃。
18.根据权利要求1所述的制备方法,其中,步骤g)中所述碱为氢氧化钾;溶剂为甲醇、四氢呋喃或两者的混合溶剂。
19.根据权利要求1所述的制备方法,其中,步骤h)中所述氯代试剂为N-氯代丁二酰亚胺;溶剂为二氯甲烷、乙腈;反应温度为0℃至80℃。
20.根据权利要求1所述的制备方法,其中,步骤i)中所述脱甲基试剂为三氯化铝、三溴化硼;溶剂为二氯甲烷;反应温度为-40℃至25℃。
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