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1.
以取代苯甲酸、乙腈和取代苯胺为原料,经4步反应合成了31个3-氧-3-芳基-2-芳基腙-丙腈衍生物(5a~5z和5Ⅰ~5Ⅴ),其中5a~5z为新化合物,其结构经1H NMR,13C NMR和MS表征。以STAT3抑制剂姜黄素和Stattic为对照,测试了5对人肝癌细胞、人前列腺癌细胞、人乳腺癌细胞(三株STAT3相关细胞)及小鼠胚胎细胞(STAT3低表达细胞)的抑制活性。结果表明:3-氧-3-(4'-氯苯基)-2-(4″-乙酰苯腙)-丙腈(5e)对受试细胞均有较好的抑制活性,IC50分别为6.01μmol·L-1,7.10μmol·L-1,9.00μmol·L-1和9.89μmol·L-1。 相似文献
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以二异丙胺对乙酰乙酸乙酯进行氨解,得到N,N-二异丙基乙酰基乙酰胺1, 1再与3-溴丙炔进行亲核取代,得到α-和γ-两种取代物2和3。3经水解与酯化一步生成目标化合物3-氧代-6-庚炔酸甲酯3a, 3步反应总收率达到43.3%,产物结构经1H NMR、 13C NMR以及MS确证。改进后的3-氧代-6-庚炔酸酯合成方法避免了使用强腐蚀性的二异丙基氨基锂和超低温(-78℃)反应温度,操作处理简单、反应条件温和,同时提高了亲核取代反应的区域选择性。
相似文献
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The Reaction of arylatrloxythiophosphoric hydrazide 2a ~ 2d with glycosyl isothioeyanates 3a ~ 3d gave the corresponding aryl N-( glyeosylthioureylene)-arylthiophosphoramidates 4a ~ 4d, 5a ~ 5d, 6a ~ 6d, 7a ~ 7d. The resulted compounds contained glyeosyhhioureylene and thiophosphorie amide fragments. The glycosyl isothioeyanates 3a~ 3d were prepared by the reaction of α-D-glyeosyl bromides with Pb(SCN)2. The biologic activities of the representative compounds were studied. 相似文献
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以卤代芳基乙酸和2,3,4-三羟基苯甲醛为主要原料,经Perkin缩合和关环反应制得12个含卤素的7,8-二乙酰氧基-3-芳基香豆素化合物(D1~D12); D1~D12经水解反应合成了12个含卤素的7,8-二羟基-3-芳基香豆素化合物(E1~E12),除D2, D4~D6, E2, E4~E6外均为新化合物,其结构经1H NMR和MS(EI)表征。采用MTT法研究了D1~E12对人肺癌细胞株(A549)的体外细胞毒性。结果表明:D1~E12均表现出不同程度的肿瘤细胞增殖抑制活性(IC50≥192.74 μmol·L-1)。 相似文献
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在K2CO3-TEBA相转移催化体系中,4位或2位含有—NO2的苯磺酰基乙酸酯与α,β-不饱和酯发生加成-重排反应,制得2-芳基戊二酸酯,其收率较高(73%~87%)。研究了反应物-芳磺酰基乙酸酯苯环上取代基对加成-重排反应的影响,发现只有当芳环上4位或2位有硝基时,在K2CO3-TEBA相转移催化体系中,芳磺酰基乙酸酯与α,β-不饱和酯反应才可发生加成-重排反应,生成2-芳基戊二酸酯,其机理可能是芳磺酰基乙酸酯与α,β-不饱和酯首先发生Michael加成反应,随后加成产物发生分子内的亲核取代,酸化后脱去SO2得2-芳基戊二酸酯。而当芳环上4位或2位含有给电子基团(如,甲基)或弱吸电子基团(如,氯)时,却只能发生正常的Michael加成反应,生成相应的2-芳磺酰基戊二酸酯。 相似文献
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D. Jansone S. Belyakov M. Fleisher L. Leite E. Lukevics 《Chemistry of Heterocyclic Compounds》2007,43(11):1374-1378
Single crystals of 4,6,6-trimethyl-2-oxo-5,6-dihydro-2H-pyran-3-carbonitrile and 4,6,6-trimethyl-2-oxo-1,2,5,6-tetrahydropyridine-3-carbonitrile
were prepared and submitted to X-ray diffraction analysis. Both compounds have a molecular structure belonging to the C1 symmetry group. The heterocyclic rings are in a distorted envelope conformation. The crystals belong to the monoclinic system
and each contain four molecules in the unit cell. In the crystal the pyridine derivative exists in the form of centrosymmetric
dimers stabilized by intermolecular hydrogen bonds between the oxygen atoms of the carbonyl group and the hydrogen atom at
the nitrogen atom of the ring.
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Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 11, pp. 1620–1624, November, 2007. 相似文献
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LING Ke-QingDepartment of Chemistry Huaibei Coal Industry Teacher''''s College Huaibei Anhui China 《中国化学》1996,(3)
The title compound (1) was prepared via methylene blue (MB)-sensitized photooxy-genation of l-methyl-2-phenylindole (2d) in methanol. Acid-catalyzed nucleophilic substitution of 1 with nucleophiles gave 1,2,2-trisubstituted 3-oxo-2,3-dihydroindoles (3-6). Reduction of 1 with lithium aluminum hydride, followed by acidic workup yielded 4d and 2d, whereas the same reduction reaction of 1, followed by neutral workup gave l-methyl-2-phenyl-3-hydroxy-2,3-dihydroindole (15), together with 3. The reaction pathways of nucleophilic substitution and reduction of 1 were discussed. 相似文献
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Z. G. Aliev S. N. Shurov E. Yu. Pavlova Yu. S. Andreichikov L. O. Atovmyan 《Russian Chemical Bulletin》1995,44(8):1492-1495
Reaction of 5-phenyl-2,3-dihydro-2,3-furandione with ethyl 3-benzylamino-2-butenoate, resulting in ethyl 1-benzyl-2-hydroxy-5-methyl-3-oxo-2-phenacyl-2,3-dihydropyrrole-4-carboxylate and benzylamide ofN-benzoylpyruvic acid, was studied. The structure of the pyrrole derivative was confirmed by X-ray analysis.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1552–1555, August, 1995. 相似文献
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Ling Ke-Qing 《中国化学》1996,14(3):265-270
The title compound (1) was prepared via methylene blue (MB)-sensitized photooxy-genation of l-methyl-2-phenylindole (2d) in methanol. Acid-catalyzed nucleophilic substitution of 1 with nucleophiles gave 1,2,2-trisubstituted 3-oxo-2,3-dihydroindoles (3–6). Reduction of 1 with lithium aluminum hydride, followed by acidic workup yielded 4d and 2d, whereas the same reduction reaction of 1, followed by neutral workup gave l-methyl-2-phenyl-3-hydroxy-2,3-dihydroindole (15), together with 3. The reaction pathways of nucleophilic substitution and reduction of 1 were discussed. 相似文献
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Promoted and mediated by an ionic liquid-[bmim][BF4].fused pyrans or arylbis(4-hydroxy-6-methyl-2-oxo-2H-pyran-3-yl)methanes were efficiently and selectively prepared from the reaction of aldehyde and 4-hydroxy-6-methyl-2-oxo-pyran with or Without acetic anhydride.By using these novel procedures,pyrimidine nucleoside-fused pyran and arylbis(pyranon-3-yl)methane hybrids with potential biological activities were constructed. 相似文献
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为了寻找高效低毒的非甾体抗炎药物, 将5-氯-2-吲哚酮与氯甲酸苯酯经酯化及水解制得1-苯氧羰基-5-氯-2-吲哚酮, 在4-N,N-二甲氨基吡啶作用下与对甲磺酰基苯甲酰氯反应, 经酸化得1-苯氧羰基-3-[羟基-(p-甲磺酰基)苯甲撑基]-5-氯-2-吲哚酮(II1), 最后与相应的胺(氨)反应, 经盐酸中和制得未见文献报道的目标化合物II2~II15, 其结构经IR, 1H NMR, MS和元素分析确证. 二甲苯致小鼠耳肿胀模型测试显示II10, II11, II15具有明显的抗炎活性; 角叉菜胶致大鼠足跖肿胀模型试验结果表明, II10, II11抗炎活性与双氯芬酸钠和替尼达普钠相当(P>0.05); 其中II11的胃肠道副作用显著小于双氯芬酸钠(P<0.05)和替尼达普钠(P<0.01). 相似文献
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I. V. Ukrainets N. L. Bereznyakova V. A. Parshikov 《Chemistry of Heterocyclic Compounds》2009,45(3):345-350
4-Methyl-2-oxo-1,2-dihydroquinoline-3-carboxylic acid hetarylamides can be prepared by two fundamentally different routes
with allowance made for the thermal stability of the starting hetarylamines.
* For Communication 152 see [1].
Translated from Khimiya Geterotsiklicheskikh Soedinenii, No. 3, pp. 426–432, March, 2009. 相似文献
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K. K. Babierskii L. V. Sobeshko Yu. A. Davidovich I. A. Yamskov 《Russian Chemical Bulletin》1996,45(3):730-731
A method for the preparation of previously unknownN-methacryloyl- andN-allyl-derivatives of ethyl 5-oxo-2-pyrrolidinecarboxylate has been developed.Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 3, pp. 767–769, March, 1996. 相似文献
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DL-丙交酯与2-氢-2-氧-1,3,2-二氧磷杂环己烷的开环共聚合研究 总被引:1,自引:0,他引:1
在三异丁基铝催化下DL-丙交酯与2-氢-2-氧-1,3,2-二氧磷杂环己烷开环共聚,制备了一类新型水溶性共聚物P(LA-co-TMP)。用1HNMR、IR谱对其结构进行了表征,并研究了催化剂用量及不同单体配比对总转化率、共聚物组成及特性粘度的影响。 相似文献