3-芳基香豆素类化合物抗肿瘤活性研究进展

综述了3-芳基香豆素在抗人肺癌细胞株A549活性、抗人鼻咽癌细胞株KB活性、抗人乳腺癌细胞株MCF-7活性、抗人气道平滑肌细胞株KV和抗其它肿瘤活性方面的研究进展;通过Perkin反应、Knoevenagel反应、Suzuki偶联反应及其它反应总结了3-芳基香豆素合成方面的研究进展,以期为该类化合物抗肿瘤活性深入研究和开发提供参考。     

卤代3-芳基香豆素体外抗肿瘤活性研究

从24个卤代3-芳基香豆素化合物中筛选抗肿瘤化合物,为开发新型抗肿瘤药物提供参考。采用MTT法测定24个卤代3-芳基香豆素化合物对人前列腺癌细胞PC-3、人乳腺癌细胞MCF-7、人肝癌细胞Hep G2的生长抑制作用,用抑制率评价增殖抑制效果。结果表明,试药浓度为25μg/m L时,24种化合物对PC-3、MCF-7、HepG2细胞株均有不同程度的增殖抑制作用,绝大部分化合物增殖抑制率超过50%。其中化合物A_6、B_6表现出较强的增殖抑制活性,对PC-3细胞株的抑制率分别为72.09%和73.3%,对HepG2细胞株的抑制率分别为80.17%和81.02%,与阳性对照星孢菌素的抑制率接近。试药浓度为5μg/mL时,24种化合物对MCF-7细胞株的抑制率均没有超过50%,对HepG2细胞株有3个化合物抑制率超过50%,对PC-3细胞株有18个化合物抑制率超过50%。3-芳基香豆素化合物具有潜在的肿瘤细胞增殖抑制活性,有发展为抗肿瘤药物的潜力。     

3-芳基香豆素衍生物的合成及其生物活性研究

对3-芳基香豆素母核进行修饰，以芳基乙酸和水杨醛为起始原料，三乙胺为催化剂，乙酸酐为溶剂，经缩合反应分别引入吸电子基团三氟甲基和给电子基甲氧基，合成了3-(4′-三氟甲基苯基)香豆素（2a）和新化合物3-(4′-甲氧基苯基)香豆素（2b），其结构经UV-Vis、 ¹H NMR、 IR和MS表征。并对其生物活性和荧光标记特性进行了研究。结果表明：2a和2b显示较强的细胞增殖抑制活性、抑菌活性，浓度为4000 μmol·L^-1时，对ECV304细胞的抑制率分别为84.22%和65.56%，对大肠杆菌、绿脓杆菌和金黄色葡萄球菌均显示抑菌活性，具有较好的荧光特性，可用于细胞染色及荧光标记。     

新型3-氧-3-芳基-2-芳基腙-丙腈衍生物的合成及其抗癌活性

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。     

3-芳基-6-甲基-1,6-二氢-1,2,4,5-四嗪-1(6H)-甲酰胺类化合物的合成及其抗肿瘤活性

随着患癌人数逐年增加,抗肿瘤药越来越受到关注。本文以3-芳基-6-甲基-1,2,4,5-四嗪为起始原料,先与硼氢化钠反应得到3-芳基-6-甲基-1,6-二氢-1,2,4,5-四嗪,再与芳基异氰酸酯反应得到目标化合物。通过元素分析、¹H NMR、 IR和MS表征确认结构后,进一步开展化合物体外对人宫颈癌细胞Hela、人肺癌细胞株A549、人乳腺癌细胞株MCF-7和人白血病细胞株HL-60的抗肿瘤活性测试。以顺铂为对照,发现此类化合物具有一定的体外抗肿瘤活性,其中化合物3j对HL-60的活性接近顺铂,值得进一步研究。     

新型卤代3-芳基香豆素的合成及其抗癌活性

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）。     

吡唑环桥连简约型长春碱类似物的设计合成

利用焦磷酰氯(P2O3Cl4)和DMF为Vilsmeier-Haack试剂,与2,3,3-三甲基-3H-吲哚反应生成二甲酰化中间体化合物,再与肼衍生物反应生成系列吡唑环桥连简约型长春碱类似物2a~2m.目标化合物的结构均经1H NMR,13C NMR和HRMS确证.初步的抗肿瘤活性数据表明,在50μmol/L的浓度下,大部分目标化合物对人乳腺癌细胞株(MCF-7)(estrogen-positive)和人肝癌细胞株(Hep G2)具有一定的抗肿瘤活性,其中2f和2j抗肿瘤作用较强,它们对MCF-7细胞株的存活率分别为28.0%和21.4%;而对Hep G2细胞株的存活率分别为31.6%和34.0%.     

新型1,3-二取代酞嗪酮类衍生物的合成及抗肿瘤活性研究

为了寻找高效低毒的抗肿瘤药物,设计并合成新型的1,3位取代酞嗪酮类化合物.采用噻唑蓝(MTT)法对目标化合物在MCF-7(人乳腺癌细胞)、PC-3(人前列腺癌细胞)、SW-620(人结肠癌细胞)和HGC-27(人胃癌细胞)四种人类癌细胞的抗增殖活性进行评价.结果显示大部分化合物具有较好的抗增殖活性.其中,2-(4-(4-溴苯基)-1-氧代酞嗪-2(1H)-基)-N-(2-氟苯基)乙酰胺(5g)对MCF-7细胞的抗增殖活性较好,IC50值为6.01μmol/L,为抗肿瘤药物的研究提供了思路.     

4-氨基喹唑啉类衍生物的合成及体外抗肿瘤活性

2-氨基-4,5-二甲氧基苯甲酸为起始原料,经环化、氯化和取代反应,合成了5个4-氨基喹唑啉类化合物3a~3e,其结构经¹H NMR和MS测试技术进行了表征。采用MTT法测试了化合物3a~3e对人乳腺癌细胞（MCF-7）、人肺癌细胞（A549）和人前列腺癌细胞（PC-3）的体外抗肿瘤活性。结果表明：3b、3d和3e对3种细胞株的活性有一定的抑制作用,并且对A549表现出了一定程度的选择性。通过分子对接模拟研究AMD和3b与 DNA序列d(CGATCG) 之间的相互作用。      

4-(5H-嘧啶并[5,4-b]吲哚-2-基-氨基)苯甲酰胺类化合物的设计、合成及抗肿瘤活性研究

设计、合成了19个未见文献报道的4-(5H-嘧啶并[5,4-b]吲哚-2-基-氨基)苯甲酰胺类衍生物,所有化合物结构均经~1H NMR、~(13)C NMR及HRMS确认。采用噻唑蓝(MTT)法测试了目标化合物对人结肠癌细胞(HCT116)、人乳腺癌细胞(MD-MBA-231)、大鼠神经胶质瘤细胞(C6)、人非小细胞肺癌细胞(A549)、人乳腺癌细胞(MCF-7)的体外抗肿瘤活性。所有化合物均表现出较好的抗肿瘤活性,其中5a、5b、5c、5e、5i、5p和5r对多个细胞株的抑制活性为阳性对照药品5-氟尿嘧啶的20～100倍;其中,以5b的抗肿瘤活性最为突出,对肿瘤细胞HCT116、MD-MBA-231、C6、A549、MCF-7的IC_(50)分别为3. 26、3. 06、0. 63、0. 68、2. 32μmol/L。初步研究结果表明,此类化合物对肿瘤细胞增殖有明显抑制作用,为新型抗肿瘤化合物的设计、合成提供了思路。     

α-Amino acid derived enaminones and their application in the synthesis of N-protected methyl 5-substituted-4-hydroxypyrrole-3-carboxylates and other heterocycles

A new and simple synthesis of novel N-protected methyl 5-substituted-4-hydroxypyrrole-3-carboxylates, which exist in equilibrium with their 4-oxo tautomers, has been developed in two steps starting from N-protected α-amino acids. The key intermediates are enaminones, which can also be isolated, characterized, and used for the construction of other functionalized heterocycles, before they spontaneously decompose to pyrrole products. 4-Hydroxypyrroles are prone to partial aerial oxidation but can be efficiently alkylated or reduced to stable polysubstituted pyrrolidine derivatives.     

Specific intramolecular aromatic CH insertion of diazosulfonamides

The chemoselectivity in the intramolecular CH insertion of various diazosulfonamides has been experimentally studied. The results reveal that the aliphatic 1,4-, 1,5-, or 1,6-C(sp³)?H insertions of diazosulfonamides are not accessible, while the aromatic 1,5-C(sp²)?H insertion can be realized specifically by adjusting the diazo-adjacent group. In addition, the general chemoselectivities in the intramolecular CH insertions of diazosulfonyl compounds are summarized. Generally, diazosulfones undergo both aromatic 1,5-C(sp²)?H and aliphatic 1,5- and 1,6-C(sp³)?H insertions, while diazosulfonates undergo aliphatic 1,5- and 1,6-C(sp³)?H insertions. However, diazosulfonamides only undergo aromatic 1,5-C(sp²)?H insertion.     

N-Heterocyclic carbene-palladacyclic complexes: synthesis,characterization and their applications in the C-N coupling and α-arylation of ketones using aryl chlorides

N-Heterocyclic carbene-palladacyclic complexes 3 were successfully achieved in a one-pot procedure under mild conditions. The structure of 3a was unambiguously confirmed by X-ray single crystal diffraction and it was an active catalyst in the Buchwald-Hartwig amination and α-arylation of ketones even at very low catalyst loadings (0.01?mol%).     

Iodine-mediated oxidative Pictet-Spengler reaction using terminal alkyne as the 2-oxoaldehyde surrogate for the synthesis of 1-aroyl-β-carbolines and fused-nitrogen heterocycles

An efficient iodine-mediated oxidative Pictet-Spengler reaction in dimethyl sulphoxide (DMSO) using terminal alkynes as the 2-oxoaldehyde surrogate for the synthesis of aryl (9H-pyrido[3,4-b]indol-1-yl)methanones is described. The scope of the protocol includes the total synthesis of Fascaplysin, Eudistomins Y₁ and Y₂. The methodology is extended for preparing pyrrolo[1,2-a]-quinoxaline and indolo[1,5-a]quinoxaline derivatives. The utility of 1-aroyl-β-carbolines was demonstrated by performing palladium-catalyzed β-carboline directed ortho-C(sp2)-H functionalization of the phenyl ring with thiomethyl (SMe) group using DMSO as source and for accessing 4-aryl-canthin-6-ones.     

Facile synthesis of bicyclic 1-arylpyrazol-5-ones

In this Letter, we described a facile method for constructing fused bicyclic 1-arylpyrazol-5-one ring system. We employed various methylene-containing carboxylic acids as the substrates and proved that the pyrazolone ring closure requires activated methylene group in intermediate II. Accordingly, a series of structurally diversified, fused bicyclic 1-arylpyrazol-5-ones was prepared in moderate to high yields using the requisite substrates.     

Synthesis of pyrrolo[1,2-a]pyrazines and pyrazino[1,2-a]indoles by Curtius reaction in Morita-Baylis-Hillman derivatives

Synthesis of substituted pyrrolo[1,2-a]pyrazines and pyrazino[1,2-a]indoles from the Morita-Baylis-Hillman derivatives of acrylates via saponification followed by Curtius reaction is described.     

正丁胺对激光染料荧光谱影响的研究

用正丁胺作为碳源,采用射频辉光放电制备碳膜,选用激光染料R6G和聚乙二醇混合液作为蒸气源,采用单源热蒸发,在蒸发室与染料同时沉积得到混合膜,用拉曼光谱和红外光谱分析了碳膜的结构和键合方式,分析表明:碳膜中存在胺基团和氢原子.混合膜的荧光谱测量结果表明,认为正丁胺对染料荧光谱的影响是因为胺基和氢原子的存在.     

Cu0-catalysed 1,3-dipolar cycloadditions of α-amino acid derived N,N-cyclic azomethine imines to ynones

A series of 20 CuAIAC reactions between eight 4-acylamino substituted pyrazolidine-3-one-1-azomethine imines and four terminal ynones were performed using Cu⁰ as catalyst. The corresponding fluorescent cycloadducts were obtained in very high yields upon simple workup. Thus, Cu-metal turned out to be a better catalyst than Cu^I in terms of yield and ease of isolation. Availability of azomethine imines, mild reaction conditions, and simple workup enable a “click” access to libraries of densely substituted 2,3-dihydro-1H,5H-pyrazolo[1,2-a]pyrazol-1-ones. Reactivity of differently substituted dipoles was evaluated experimentally and by quantum chemical methods (DFT).     

Synthesis and antioxidative/anti-inflammatory activity of novel fullerene–polyamine conjugates

(E)-4-(Fullerenopyrrolidin-1-yl)-3-methylbut-2-enoic acid and its corresponding succinimidyl ester, readily obtained through Prato-type modification of C₆₀, were used for the selective N-acylation of polyamines. The thus obtained conjugates were evaluated for their antioxidative and anti-inflammatory activity and their cytotoxicity was determined. Members of this family of compounds showed interesting anti-lipid peroxidation, anti-lipoxygenase and anti-inflammatory activity and comparable cytocompatibility to spermidine.