2'-羟基查耳酮的Mannich反应及其产物的生物活性

研究了2'-羟基查耳酮的Mannich反应, 发现该反应区域选择性地发生在查耳酮B环C-3'位, 利用此法共合成了12个新的Mannich碱化合物, 其结构经元素分析、¹H NMR和IR得到确证. 该反应制备步骤简单, 条件温和, 产物易纯化, 收率从中等到高(49～72%). 初步的生物活性测定表明其中部分化合物具强效的CDK1/cyclin B抑制活性, 多数化合物对肿瘤细胞具较强的抑制活性.     

Synthesis and biological activities of hydroxyl-protected fluorine-containing 4,4-dihydroxylmethyl-2-aryl-iminothiazolidines

Eight novel compounds were synthesized by a facile and mild method with high yields, and the structures of all the compounds were characterized by ¹H NMR IR mass and high resolution mass spectroscopy. Their inhibitory activity against insect-flight and trehalase in vitro were screened. Some target compounds have moderate inhibitory activity against trehalase, and show inhibition action to insect-flight.     

吡唑腙及其双杂环化合物的设计、合成及生物活性

利用Vilsmeier-Haak反应得到活性中间体,取代-4-甲酰基吡唑;将其与芳氧乙酰肼反应,合成5个吡唑腙类化合物3,再经关环反应,制得5个吡唑类双杂环化合物4。所有新化合物的结构均经IR,1H NMR,MS和元素分析确证了结构。对新化合物3,4分别进行了棉花枯萎病菌、棉花黄萎病菌、棉花立枯病菌、瓜果腐霉病菌、番茄早疫病菌、向日葵菌核病菌等初步的抑菌活性测试,结果表明,吡唑类双杂环化合物4的抑菌效果明显高于吡唑腙化合物3。在质量浓度为50mg/L时,3d、3e对番茄早疫病菌、向日葵菌核病菌有较好的抑制效果(﹥80%);双杂环化合物4对6种病菌均有明显的抑制效果(﹥70%),其中4d、4e对棉花立枯病菌的抑制率大于95%。     

2-氰基-3-甲硫基-3-(4-甲基或6-甲基苯并[d]噻唑-2-氨基)丙烯酸酯类化合物的合成和抗病毒活性研究

以氰基乙酸和氰基乙酸乙酯为起始原料,采用活性基团拼接的方法,将苯并噻唑基团引入氰基丙烯酸酯中,设计合成了14个含有苯并噻唑基团的氰基丙烯酸酯(酰胺)类化合物3.所有化合物结构经过1H NMR,13C NMR,红外光谱和元素分析确证,并对所合成的目标化合物3进行了室内抗烟草花叶病毒(TMV)和抗黄瓜花叶病毒(CMV)活性测试.结果表明该类化合物具有一定的抗TMV和抗CMV活性.在0.5 mg/mL时,化合物3b,3c,3d对CMV表现出较好的活体治疗活性,抑制率分别为46.3％,45.1％,43.7％.     

Synthesis and biological evaluation of new oxime-ether derivatives of steroid as anti-bacterial agents

Various oxime-ether derivatives of cholesterol have been synthesized by the alkylation of the steroidal oxime with 1-(2-chloroethyl) pyrrolidine hydrogen chloride/chloroethylamine hydrochloride in the presence of sodium methoxide in dry methanol. The structures of these compounds were elucidated by IR ¹H NMR, FAB mass spectroscopic methods and elemental analyses. The anti-bacterial activity was first tested in vitro by the disk diffusion method against two Gram-positive and two Gram-negative bacteria, and then the minimum inhibitory concentration (MIC) of compounds were determined. The results showed that the chloro derivatives exhibited better anti-bacterial activity than the standard drug chloramphenicol.     

Novel Steroidal (6R)‐Spiro‐1,3,4‐thiadiazoline Derivatives as Anti‐bacterial Agents

Novel steroidal (6R)‐spiro‐1,3,4‐thiadiazoline derivatives have been synthesized by the cyclization of steroidal thiosemicarbazones. Thiosemicarbazones have been synthesized by the reaction of steroidal ketones with thiosemicarbazide. All the compounds have been characterized by IR, ¹H NMR, mass and elemental analyses. The antibacterial activities of these compounds have been first tested in vitro by the disk diffusion assay against two Gram‐positive and two Gram‐negative bacteria, and then the minimum inhibitory concentration (MIC) values have been determined with the reference of standard drug amoxicillin. The results showed that steroidal thiadiazoline derivatives exhibited better antibacterial activity than the steroidal thiosemicarbazone derivatives. Chloro and acetoxy substituents on the 3β‐position of the steroidal thiadiazoline ring increased the anti‐bacterial activity. Among all the compounds, compounds 7 and 8 were found better inhibitors as compared to the respective drug amoxicillin.     

新型含5-芳基异噁唑结构的氰基丙烯酸酯类化合物的合成及生物活性

通过5-取代苯基异噁唑-3-甲基胺与2-氰基-3,3-二甲硫基丙烯酸取代酯的缩合反应,合成了一系列含5-取代苯基异噁唑环结构的氰基丙烯酸酯类衍生物,并采用核磁共振波谱和元素分析对化合物的结构进行了表征.初步的生物活性测试结果表明,部分化合物显示出较好的除草活性,在1500 g/ha剂量下,化合物7h,7i和7m对芥菜的茎叶处理抑制率分别为90%,40%和100%;化合物7m和7n对繁缕的茎叶处理抑制率分别为100%和80%;化合物7m和7n对小藜的茎叶处理抑制率分别为100%和85%.此外,化合物7b和7c还表现出良好的抗肿瘤活性,其对HepG2细胞的IC50值分别为3.2和10.1μmol/L.     

Synthesis and fungicidal activity of aryl(arylamino)methylphosphonic acids

A series of aryl(arylamino)methylphosphonic acids were synthesized based on the previous work for the modification of alkylphosphonates. As key intermediates, α-aminophosphonates were synthesized with high yield by a three-component Kabachnik–Fields reaction under solvent-free conditions. The compounds were identified and characterized by infrared, ¹H NMR, ¹³C NMR, mass spectrum, and elemental analyses. Their fungicidal activities against typical fungi occurring in the Chinese agro-ecosystems were evaluated. The results of preliminary bioassays showed that some of the title compounds exhibited moderate fungicidal activities against tomato late blight and cucumber fusarium wilt. For example, compound 3b showed 78% inhibitory activity against tomato late blight, and compound 3h possessed 86% inhibitory activity against cucumber fusarium wilt.     

6-氯-4-哌嗪基喹唑啉缩氨基硫脲类化合物的合成及体外抗肿瘤活性

以5-氯-2-氨基苯甲酸和甲酰胺为起始原料,经环化、氯化、取代和缩合反应,合成了3个未见文献报道的含哌嗪的喹唑啉衍生物5a~5c。 其结构用1H NMR、13C NMR、ESI-MS及IR测试技术进行了表征。 采用MTT法测试了化合物5a~5c对人胃癌SGC-7901、人口腔表皮样癌KB和人纤维肉瘤HT-1080的体外抗肿瘤活性。 结果表明,化合物5a~5c对人胃癌SGC-7901和人纤维肉瘤HT-1080有弱的抑制活性,而对人口腔表皮样癌KB无明显抑制活性。     

Design,Synthesis and Antiproliferative Activities of Diaryl Thiourea Derivatives as Anticancer Agents

Two new series of diaryl thiourea containing sorafenib derivatives 9a – 9t were designed and synthesized, and their antiproliferative activities against PC‐3, HCT116 and MDA‐MB‐231 cell lines were evaluated. All compounds generally showed antiproliferative activity to PC‐3 cells, most of the analogs exhibited potent antiproliferative activity to HCT116 cells, and compounds 9e , 9f , 9o and 9p demonstrated inhibitory activities against all three cell lines. The structures of all the newly synthesized compounds were determined by ¹H NMR, ¹³C NMR and HRMS.     

吡啶联喹唑啉酮衍生物的设计、合成与抗菌活性研究

以靛红酸酐为起始原料,设计并合成了14个结构新颖的吡啶联喹唑啉酮类衍生物。所有化合物经1H NMR、13 C NMR和高分辨质谱(HRMS)表征确证其结构。初步抗菌活性结果显示,该类化合物对水稻白叶枯病菌(Xanthomonas oryzae pv.Oryzae,Xoo)、猕猴桃溃疡病菌(Pseudomonassyringae pv.actinidae,Psa)和玉米纹枯病菌(Rhizoctonia solani,Rs)均表现出一定的抑制活性。其中化合物2-([3,3′-联吡啶]-5-基)-6-氯-3,8-二甲基喹唑啉-4(3 H)-酮(3m)对Rs的抑制活性可达(51.8%)。     

2-氟-6-氟苯甲酰基嘧啶基硫脲的合成及生物活性研究

合成了7个未见文献报道的2-氟-6-氯苯甲酰基硫脲，其结构经元素分析、~1H NMR和IR确证。初步活性测试结果表明：部分化合物具有较好的除草活性。     

六氢-1H-吡咯并[3,4-d]嘧啶衍生物的合成及抗肿瘤活性

以顺丁烯二酸酐为原料,经过水解、缩合、库尔提斯重排、脱保护得到1-苄基-3-氨基-吡咯烷-4-羧酸甲酯盐酸盐,再与硫脲衍生物缩合得到1-苄基-4-(2-甲酸叔丁酯-3-胍基)吡咯烷-3-羧酸甲酯衍生物,最后经过水解、酯化、脱保护得到六氢-1H-吡咯并[3,4-d]嘧啶衍生物,其结构经~1H NMR、~(13)C NMR、ESI-MS和元素分析表征。3-(4,5-二甲基噻唑-2)-2,5-二苯基四氮唑溴盐(MTT)法测试其抗肿瘤活性,实验结果表明,其中化合物9d和9g对肿瘤细胞(Bel-7402)株具有明显的抑制活性。     

3-取代吲哚酮类化合物的合成及抗癌活性研究

设计合成了9种未见报道的3-取代吲哚酮类化合物, 所有目标化合物的结构经1H NMR, IR, MS, 元素分析表征确证. 初步的生物学活性研究结果表明, 此类化合物对HL-60细胞系的增殖具有一定的抑制作用.     

A One-Pot Three-Component Synthesis and Investigation of the In Vitro Mechanistic Anticancer Activity of Highly Functionalized Spirooxindole-Pyrrolidine Heterocyclic Hybrids

With an aim to develop more effective and affordable anticancer agents possessing a unique mechanism of action, we designed and synthesized derivatives of spirooxindole-pyrrolidine heterocyclic hybrids in good yields through a one-pot three-component (3+2) cycloaddition strategy. The synthesized compounds were characterized thoroughly for the physicochemical properties by making use of FT-IR, NMR spectroscopy, and mass spectrometry. Further, these compounds have been evaluated for the influence of anticancer activity against HepG2 cells up to 200 µg/mL concentration. The highly active molecular scaffold was tested for the in-depth mechanistic studies, and it was found that the major pathway of cell death is apoptosis which occurs through the induction of reactive oxygen species followed by the involvement of caspases.     

新型汉防己甲素衍生物的合成及其生物活性

以汉防己甲素为原料,经溴代反应制得关键中间体5-溴汉防己甲素(2); 2与硼酸衍生物经Suzuki反应合成了6个新型的汉防己甲素衍生物(4a~4f),其结构经¹H NMR, ¹³C NMR和ESI-MS表征。采用CCK-8法初步考察了4a~4f对人早幼粒白血病细胞(HL60)和人肺癌细胞(A549)的抑制活性;并采用MTT法对活性较好的化合物进行复筛。采用酶联免疫吸附法考察4a~4f对多种受体酪氨酸激酶的抑制活性。结果表明：4b, 4c和4e对HL60和A549有一定的抑制活性; 4b和4c对受体酪氨酸激酶FGFR1的抑制活性大于50%。     

Organocatalyzed Synthesis and Antibacterial Activity of Novel Quinolino Annulated Analogues of Azepinones

Starting from dimedone, two methodologies for synthesizing novel quinolino annulated azepinones have been reported. The protocol involves azepinone synthesis by the action of a newly synthesized organocatalyst derived from the reaction of TCT and DMF on oxime derivatives ( 5 and 9 ), which were obtained by the reaction of acridine dione derivatives ( 4 and 8 ) with hydroxylamine hydrochloride. The derivatives 4 and 8 were obtained by the reaction of 1 with anthranilic acid 2 and isatoic anhydride 7 , respectively. The synthesis of all the compounds was confirmed initially by TLC followed by spectral analysis through IR, ¹H NMR, ¹³C NMR, mass spectrometry, and elemental analysis. The results that emanated on the evaluation of the antibacterial activity of azepinones against two Gram‐positive and two Gram‐negative test organisms using disc diffusion method have also been discussed. Compounds 6c , 6d , 6e , 10c , and 10e have been found to display better inhibitory activity than standard drugs streptomycin and tetracycline. The minimum inhibitory concentration and IC₅₀ values for the compounds under study as well as of standard drugs were calculated. The maximum inhibition by bacterial strains was observed at 150 μg/mL.     

3-(N-取代苯基-2-乙酰胺基)硫基-4-N-取代邻羟苯基亚胺基-5-甲基-1,2,4-三唑类化合物的合成及生物活性研究

以对称二氨基硫脲为原料,与冰醋酸反应生成5-甲基-4-氨基-1,2,4-三唑-3-硫酮(1);在弱酸性条件下,1与取代水杨醛反应生成席夫碱中间体5-甲基-4-(N-取代邻羟苯基)亚胺基-1,2,4-三唑-3-硫酮(2a～2c);最后在碱性条件下分别与N-取代苯基-2-氯乙酰胺发生烷基化反应生成15种未见报道的目标化合物3-(N-取代苯基-2-乙酰胺基)硫基-4-(N-取代邻羟苯基)亚胺基-5-甲基-1,2,4-三唑(3a～3o),其结构经IR,1H NMR,13C NMR确证.初步生物测试表明,质量分数为0.01%时,3a～3o对白色念珠菌的抑菌率均达90%以上,具有很强的抑菌活性;对金黄色葡萄球菌、大肠杆菌的抑菌率达80%以上,具有较强的抑菌活性.     

N-苄氧/烷氧苯基-4,6-二取代嘧啶胺类化合物的合成、晶体结构及除草活性

以5种苄氧基/烷氧基苯胺为基础, 设计合成了系列新颖的N-苄氧/烷氧苯基-4,6-二取代嘧啶胺类化合物, 其结构经1H NMR、MS及元素分析确证, 其中化合物5r的单晶结构经X射线单晶衍射分析确证. 油菜平皿法和稗草小杯法测试除草活性结果表明, 4种苄氧基/烷氧基苯胺3a, 3b, 3d, 3e具有较好的除草活性, 在100 μg/mL浓度下对单子叶稗草生长抑制率可达到77.3%—88.5%. KARI活性测试结果表明, 化合物5a—5s有较弱的KARI抑制活性.     

噻唑啉类化合物的合成和抑菌活性

噻唑啉类化合物的合成和抑菌活性;噻唑啉; 合成; 杀菌活性