3(3′-甲基-4′-取代苯基-1′,3′-丁二烯基)吲哚类衍生物的合成及其抗癌活性

目的　研究 3 (3′ 甲基 4′ 取代苯基 1′ ,3′ 丁二烯基 )吲哚类衍生物的合成及其抗癌活性。方法　通过亲电取代、羟醛缩合、选择性还原、相转移Wittig反应和水解反应合成目的化合物 ,利用几种药理模型进行抗癌和抗炎活性筛选。结果　设计合成了 11个 3 (3′ 甲基 4′ 取代苯基 1′ ,3′ 丁二烯基 )吲哚化合物 ,均为新化合物。生物活性实验结果表明 ,化合物 8对HL 6 0 ,HCT 8和Bel740 2癌细胞株有效 ,且在浓度为 10 -5mol·L-1时 ,其抗炎抑制率可达 10 0 %。结论　化合物 8显示了抑癌作用和抗炎活性 ,值得进一步研究。     

3-(3′-甲基-4′-取代苯基-1′,3′-丁二烯基)吲哚类衍生物的合成及其抗癌活性

目的　研究3-(3′-甲基-4′-取代苯基-1′,3′-丁二烯基)吲哚类衍生物的合成及其抗癌活性。方法　通过亲电取代、羟醛缩合、选择性还原、相转移Wittig反应和水解反应合成目的化合物,利用几种药理模型进行抗癌和抗炎活性筛选。结果　设计合成了11个3-(3′-甲基-4′-取代苯基-1′,3′-丁二烯基)吲哚化合物,均为新化合物。生物活性实验结果表明,化合物8对HL-60,HCT-8和Bel7402癌细胞株有效,且在浓度为10^-5mol·L^-1时,其抗炎抑制率可达100％。结论　化合物8显示了抑癌作用和抗炎活性,值得进一步研究。     

N-取代苯基-2-(4-取代苯基)环丙烷-1-甲酸乙酯-1-酰胺的设计、合成及抗肿瘤活性

目的设计、合成N-取代苯基-2-(4-取代苯基)环丙烷-1-甲酸乙酯-1-酰胺类化合物,并进行抗肿瘤活性研究。方法采用微波反应,经缩合、环化、水解以及酰胺化等反应合成目标化合物。所合成化合物经1H NMR谱图和质谱进行确证,并对其进行体外抗肿瘤活性筛选。结果设计、合成了20个环丙烷酰胺类化合物。体外药理活性实验显示,所合成的目标化合物具有较好的抗肿瘤活性,其中5b对A549细胞的IC50值为6.8μM,具有进一步研究的价值。结论对氯苯基取代化合物比对三氟甲基苯基取代化合物有更好的抗肿瘤活性;酰胺芳香环吸电子基团化合物活性优于供电子基团化合物。     

2-吲哚醛西佛碱化合物的合成及其抗癌活性研究

目的：合成一系列吲哚-2-位西佛碱衍生物,通过药理筛选寻找具有抗癌活性的化合物。方法：通过亲核取代、还原、氧化、亲核加成等反应得到目的化合物。结果：设计合成了22个吲哚-2-位西佛碱新化合物,药理筛选结果显示2个化合物(5,14)对KB癌细胞株有抑制作用。结论：药理筛选结果表明,一些化合物显示了一定的抗癌活性,值得进一步研究。     

N′-取代苯基-2-苯并噻唑磺酰脲类化合物的合成

目的为寻找具有抗肿瘤活性的新化合物,设计合成一系列N′-取代苯基-2-苯并噻唑磺酰脲类化合物。方法以2-巯基苯并噻唑为原料,经弱氧化、氨化、再氧化得到2-苯并噻唑磺酰胺;各种取代苯胺与三光气反应制得一系列取代苯异氰酸酯;2-苯并噻唑磺酰胺与各种取代苯异氰酸酯反应,得到一系列N′-取代苯基-2-苯并噻唑磺酰脲类化合物。结果与结论合成了15个N＇-取代苯基-2-苯并噻唑磺酰脲类化合物,除化合物6b外其余14个未见文献报道。目标化合物的结构均经承、1H-NMR和MS确证。初步体外活性筛选结果表明,目标化合物6b、6e、6n有一定的抗肿瘤活性,进一步的抗肿瘤活性测试正在进行中。     

取代4-苯乙烯基香豆素的合成及其抗肿瘤活性

目的为寻找有抗肿瘤活性的物质,设计并合成了一系列取代4-苯乙烯基香豆素化合物。方法用相转移Wittig反应和Horner反应得目的物,用¹HNMR,MS和元素分析确证其结构;用HL-60,KB,HCT-8和Bel-7402进行体外细胞毒活性筛选。结果所合成的20个(1-20)4-苯乙烯基香豆素为新化合物。化合物18对KB细胞株有效。结论化合物18显示了抗肿瘤活性,值得进一步研究。     

含四氢吡啶并[4,3-d]嘧啶环的双芳基脲类化合物的合成及抗肿瘤细胞增殖活性研究

目的设计合成2-氨基-7,8-二氢吡啶并[4,3-d]嘧啶-6(5H)烷氧基双芳基脲类化合物,并测定其体外抗肿瘤细胞增殖活性。方法以对硝基苯酚为原料,经O-烷基化、N-烷基化、缩合、环合、还原、加成共6步反应合成目标化合物。采用MTT法,以索拉菲尼(sorafenib)为阳性对照药,测定了目标化合物对人乳腺癌细胞株(MDA-MB-231)的抗增殖活性。结果与结论合成了16个新化合物,其结构经1H-NMR、MS谱确证;初步药理试验结果表明,5个化合物(7a~7c、7l和7n)表现出良好的抗肿瘤细胞增殖活性,以2,4-二氯苯基取代的化合物7c活性最好,IC50值为0.46μmol·L-1,是对照药的5.4倍。初步构效关系研究表明,引入乙氧基侧链对化合物的活性提高有利,R取代基的活性顺序为:Cl>F>CH3>OCH3。     

3-取代苯基苯并吡喃酮类化合物 的设计合成及抗肿瘤活性

目的 在7-甲氧基或7-羟基苯并吡喃酮的3位引入各种取代苯基,以发现抗肿瘤活性更强的异黄酮类化合物。方法 以丹皮酚和甲酸乙酯为原料,经多步反应制得关键中间体3-碘-7-甲氧基苯并吡喃酮(5),再经Suzuki coupling反应制得目标化合物,通过1H-NMR、MS和IR方法确定目标化合物的结构,部分化合物还进行了13C-NMR测定。选择人结肠癌细胞株HCT116和人肝癌细胞株7721为试验瘤株,以姜黄素和大豆异黄酮为阳性对照测定体外抗肿瘤活性。结果 设计合成的20个新目标化合物均有一定的体外抗肿瘤活性,其中化合物6, 9, 16和19的活性较好,与对照品姜黄素的IC50值相当, 明显优于对照品大豆异黄酮的IC50值。结论 可以通过引入不同的3-取代苯基改变异黄酮类化合物的抗肿瘤活性;在这类化合物的3位苯基上引入甲基、甲氧基或三氟甲基体积较小的基团似乎有利于其抗肿瘤活性。 关键词：化学合成; 苯并吡喃酮; Suzuki coupling偶联反应; 抗肿瘤活性     

噁唑啉化合物的合成和抗结核活性

利用氯霉素中间体对硝基苯基丝氨酸甲酯为原料,合成了具有分支杆菌生长素部分结构的2,4,5-三取代噁唑啉化合物27个。经初步药理筛选,活性均不显著。     

N-取代苯基-5-取代苯基-3H-1,2,4-三唑-3-硫酮衍生物的合成及抗菌活性研究

目的 以苯甲酸为原料,经4步反应合成一系列N-取代苯基-5-取代苯基-3H-1,2,4-三氮唑-3-硫酮化合物并研究其抗菌活性。方法 基于课题组前期对新型潜在三唑类抗菌化合物6h的作用机制研究,筛选多个侧链基团,使用乙醇和碳酸钠作溶剂改善最后一步反应条件,通过硅胶柱色谱分离纯化目标化合物,合成一系列1,2,4-三唑类化合物并采用质谱(MS)和1H NMR、13C NMR进行结构表征。通过琼脂扩散法初步筛选所有化合物对肺炎克雷伯菌、金黄色葡萄球菌和铜绿假单胞菌3种常见菌株的抗菌活性,并通过微量稀释法进一步测定它们的最小抑菌浓度(MIC值)。结果 合成17个含有卤代苯基和其他侧链基团的目标化合物,其MS以及核磁共振谱图数据表明所有化合物结构正确。抗菌活性初步筛选可知化合物6a、6b、6d、6f、6g、6h、6k、6m和6p等9个化合物具有不错的抑菌能力,其MIC测试结果表明,大部分化合物对所测菌株的MIC值在25~100μg/mL范围内。尤其是化合物6h和6k对肺炎克雷伯菌的MIC值达到25μg/mL,抑菌活性与对照药物氨苄西林相当。结论 在前期作用机制研究基础上,通过对构效关系的阐述,发现一些侧链片段如间位卤代苯基或对位卤代苯基、三氟甲基苯基等具有吸电子基团的苯基、吡啶基等对1,2,4-三唑类衍生物的抗菌活性有明显增强作用,证实侧链基团与受体蛋白形成特异性协调作用和氢键作用从而发挥衍生物的抗菌活性。     

2-(取代苯乙烯基)吲哚类衍生物的合成及其生物活性

目的　寻找有生物活性的吲哚类化合物。方法　用还原、氧化和Witting反应设计合成了21个2-(取代苯基乙烯基)吲哚化合物,用¹HNMR,MS和元素分析确证其结构,并对其进行了体外筛选实验。结果　这些化合物均为新化合物。结论　6个化合物(3,9,11,13,18和20)对组胺1受体、多巴胺2受体和肾上腺素α-2受体有相当的抑制作用,值得进一步研究。     

Synthesis and anti-HIV activity of novel 3-substituted phenyl-6,7-dimethoxy-3a,4-dihydro-3H-indeno[1,2-c]isoxazole analogues

A series of novel 3-(substituted phenyl)-6,7-dimethoxy-3a,4-dihydro-3H-indeno[1,2-c]isoxazole analogues were synthesized by the reaction of 5,6-dimethoxy-2-[(E)-1-phenylmethylidene]-1-indanone with hydroxylamine hydrochloride. The title compounds were tested for their in vitro anti-HIV activity. Among the compounds, (4g) showed a promising anti-HIV activity in the in vitro testing against IIIB and ROD strains. The IC50 of both IIIB and ROD were found to be 9.05 microM and > 125 microM, respectively.     

Synthesis and antitumor activities of unsymmetrically substituted 1,4-bis[(aminoalkyl)amino]anthracene-9,10-diones and related systems

A number of unsymmetrically substituted 1,4-bis[(aminoalkyl)amino]anthracene-9,10-diones have been synthesized and evaluated for their antitumor activity against L1210 in vitro and in vivo. The high activity of several compounds observed in vitro was not paralleled by comparable activity in vivo. The activities of the substituted 1,4-bis[(aminoalkyl)amino]anthracene-9,10-diones as inhibitors of cell growth were generally much higher than those of the related 1-[(aminoalkyl)amino]-4-methoxyanthracene-9,10-diones, and this correlated with the relative abilities of compounds of the two types to interact with calf thymus DNA.     

Expansion of structure-activity studies of piperidine analogues of 1-[2-(diphenylmethoxy)ethyl]-4-(3-phenylpropyl)piperazine (GBR 12935) compounds by altering substitutions in the N-benzyl moiety and behavioral pharmacology of selected molecules.

A series of substituted N-benzyl analogues of the dopamine transporter (DAT) specific compound, 4-[2-(diphenylmethoxy)ethyl]-1-benzylpiperidine were synthesized and biologically characterized. Different 4'-alkyl, 4'-alkenyl, and 4'-alkynyl substituents were introduced in the phenyl ring of the benzyl moiety along with the replacement of the same phenyl ring by the isomeric alpha- and beta-naphthyl groups. Different polar substitutions at the 3'- and 4'-position were also introduced. Novel compounds were tested for their binding affinity at the dopamine, serotonin, and norepinephrine transporter systems in the brain by competing for [(3)H]WIN 35 428, [(3)H]citalopram, and [(3)H]nisoxetine, respectively. Selected compounds were also evaluated for their activity in inhibiting the uptake of [(3)H]dopamine. Binding results demonstrated that alkenyl and alkynyl substitutions at the 4'-position produced potent compounds in which compound 6 with a vinyl substitution was the most potent. In vivo evaluation of three selected compounds indicated that despite their high potency at the DAT, these compounds stimulated locomotor activity (LMA) less than cocaine when tested across similar dose ranges. In a drug discrimination study procedure, none of these three compounds generalized from cocaine in mice trained to discriminate 10 mg/kg cocaine from vehicle. In a 4 h time course LMA experiment, one of our previous lead piperidine derivatives (1a) showed considerable prolonged action. Thus, in this report, we describe a structure-activity relationship study of novel piperidine analogues assessed by both in vitro transporter assays and in vivo behavioral activity measurements.     

Pneumocystis carinii and Toxoplasma gondii dihydrofolate reductase inhibitors and antitumor agents: synthesis and biological activities of 2,4-diamino-5-methyl-6-[(monosubstituted anilino)methyl] pyrido[2,3-d]pyrimidines.

Thirteen 2,4-diamino-5-methyl-6-[(monosubstituted anilino)methyl]pyrido[2,3-d]pyrimidines 5-17 were synthesized as potential Pneumocystis carinii (pc) and Toxoplasma gondii (tg) dihydrofolate reductase (DHFR) inhibitors and as antitumor agents. Compounds 5-17 were designed to investigate the structure-activity relationship of monomethoxy and monohalide substitution in the phenyl ring and N10-methylation of the C9-N10 bridge. The synthetic route to compounds 5-12 involved the reductive amination of a common intermediate, 2,4-diamino-5-methylpyrido[2, 3-d]pyrimidine-6-carbonitrile (18), with the appropriate anilines. N10-Methylation was achieved by reductive methylation. In contrast to previous reports of trimethoprim, the removal of methoxy and chloro groups from the phenyl ring in the 2, 4-diamino-5-methyl-6-[(substituted anilino)methyl]pyrido[2, 3-d]pyrimidine series generally did not decrease DHFR inhibitory activity. The monosubstituted phenyl analogues 5-12 were as potent against pcDHFR and tgDHFR as the previously reported disubstituted phenyl analogues. N10-Methylation generally resulted in a marginal increase in potency against both pcDHFR and tgDHFR. Compounds 5, 7, and 9 were evaluated and shown to inhibit the growth of T. gondii cells in culture at nanomolar concentrations. Compounds 6-8, 9, 11, and 16 were selected by the National Cancer Institute for evaluation in an in vitro preclinical antitumor screening program. All six compounds showed GI50 values in the 10(-7)-10(-9) M range in more than 20 cell lines.     

β-榄香烯吲哚衍生物的合成及其体外抗K562细胞增殖活性

目的设计合成β-榄香烯吲哚衍生物并进行体外抗癌活性筛选。方法通过合成β-榄香烯氯代物,在其结构中引入3-吲哚乙胺结构片段进而合成β-榄香烯吲哚衍生物。采用MTT法测定目标化合物对K562白血病细胞的增殖抑制作用。结果合成了15个未见文献报道的β-榄香烯吲哚衍生物。目标化合物的结构经1H-NMR、MS谱确证。活性实验结果显示14个目标化合物的活性高于β-榄香烯。结论在β-榄香烯结构中引入3-吲哚乙胺结构片段有利于提高此类化合物的抗癌活性。     

Synthesis and cardiac electrophysiological activity of 2- and 3-[(substituted phenyl)alkyl]quinuclidines. Structure-activity relationships

The syntheses and cardiac electrophysiological effects of 21 2- and 3-substituted quinuclidines and some quaternary ammonium derivatives are described. The 2-substituted quinuclidines 2-8 were prepared by alkylation of 2-methylene-3-quinuclidinone. The Wittig reaction with 3-quinuclidinone afforded the 3-substituted derivative 9, which was subsequently converted to 10 and 11. The electrophysiological profiles of the compounds were determined in canine cardiac Purkinje fibers and ventricular muscle strips. The 3-[(substituted phenyl)alkyl]quinuclidines selectively increased action potential duration (Vaughan Williams class III activity). In the 2-substituted series some of the compounds both increased action potential duration and decreased conduction velocity (class I activity). For some of the 2-substituted quinuclidines, appropriate substitution of the phenyl ring was shown to be a requirement for significant class III electrophysiological activity. Selected compounds were efficacious in a programmed electrical stimulation model in the anesthetized dog.