含杂环1,4-戊二烯-3-酮肟酯类化合物的合成及生物活性

为创制具有较高生物活性的绿色农药,以姜黄素为先导,将具有良好生物活性的肟酯基团引入1,4-戊二烯-3-酮的骨架中,设计合成了一系列含杂环1,4-戊二烯-3-酮肟酯类化合物,其结构经红外光谱、核磁共振氢谱及碳谱和高分辨质谱确认。初步的生物活性测试结果表明,在药剂浓度为50mg/L时,化合物5d对小麦赤霉病菌,水稻纹枯病菌和苹果腐烂病菌的抑制活性相对较好,分别为64.75%、52.05%和69.68%;在药剂浓度为500mg/L时,化合物5d、5e和5f对TMV具有较好的治疗和钝化活性,其抑制率分别为56.93%和86.89%、53.08%和83.51%、53.40%和89.01%。以上研究结果表明,1,4-戊二烯-3-酮肟酯类化合物具有一定抑菌和抗病毒活性,在其结构基础上进行适当的改造,有望获得具有较高生物活性的有机分子。     

新型酰胺类化合物的合成及其生物活性

选取原儿茶酸和胡椒酸两种羧酸化合物,通过酰胺键与L-酪氨酸甲酯、D-酪氨酸甲酯、章胺、多巴胺4种具有生物活性的胺类的化合物偶联。成功合成了8个新型酰胺类化合物,其结构经¹H NMR和 ¹³C NMR表征。此外,还测试所有目标分子的体外酪氨酸酶抑制活性和DPPH自由基清除能力,对目标分子的酪氨酸酶抑制活性和抗氧化活性进行了初步评价。      

Synthesis and Biological Activity of Novel Aryl Sulfamonyl Ureas

2-Substituted aryl sulfamonyl ureas are novel sulfonylurea compounds,in which the bridge was modified. For instance, 1-((o-cyclopropylcarbonyl)phenyl sulfamonyl)-3- (4',6'-dimeth-oxy-2-pyrimidinyl)urea is effective for the selective control of a variety of weed species in the presence of cereal crops and is especially useful for controlling broadleaf weeds and sedges^[1]. For further structural study, nine aryl sulfamonyl ureas(3) were synthesized, including four 1-(o-substituted phenyl sulfamonyl)-3-(4'-substituted pyrimidin-2'-yl) ureas and five 1-(α-pyridinyl sulfamonyl)-3-(4'6'-disubstituted pyrimidin-2'-yl) ureas.     

新型紫杉烷类衍生物的制备及生物活性评价

多药耐药性问题是导致第一代紫杉烷药物在临床化疗失败的主要原因。本文对紫杉醇C7、C10、C14、C3′多个位点的取代基进行改造,针对合成的6个新型的紫杉烷化合物,在体外考察其对多药耐药肿瘤细胞株以及人结肠癌HCT-116干细胞的增殖抑制活性,实验结果表明6个化合物的抗多药耐药活性均优于紫杉醇。采用P-gp高表达的犬肾细胞MDCK-MDR1进一步研究高活性候选化合物JT-3与P-gp的相互作用。以此研发抗多药耐药型的新一代紫杉烷类药物,对开发扩大抗癌新适应症的新一代紫杉烷类抗癌药意义重大。     

含硅氨基甲酸酯衍生物的合成,结构及生物活性

通过１－甲硫基亚乙基氨－甲基氨基甲酸酯与二氯亚砜反应，制得一系列新的含硅氨基甲酸酯衍生物．化合物结构经１￣ＨＮＭＲ、元素分析ＩＲ和ＭＳ确证，测定了化合物３ａ的晶体结构．生物测定结果表明，该类化合物对蚊子、粘虫、玉米螟等多种害虫具有优良的杀虫活性，且与母体灭多威相比，在哺乳动物安全性方面有显著提高．     

Synthesis and Biological Activity of Some Novel O-Phosphorylated Benzoxazole Derivatives

The phosphorylation of 2-(2′-hydroxyphenyl) benzoxazole has been accomplished with phosphorus oxychloride in a 1:1, 2:1, and 3:1 molar ratio in the presence of a base to yield O-phosphorylated benzoxazole derivatives. Their structures were confirmed by elemental analyses and IR, ¹H NMR, and ³¹P NMR spectral studies. These compounds have been screened for their insecticidal activity against Periplenata americana and were found to be quite active in this respect.     

新型二氮杂双环化合物的合成、表征及生物活性研究

以酮和硝基甲烷为原料,经3步反应合成了2种氮取代的二氮杂双环结构化合物N-二氯乙酰基-9-氧代-1,5-二氮杂二环[4.3.0]壬烷,采用红外光谱、核磁共振和元素分析对产物结构进行了表征。并利用土培法对化合物进行了初步的生物活性试验。结果表明,化合物能够减轻普施特对玉米的伤害。     

新型查尔酮类化合物的合成及其生物活性研究

以3,5-二羟基苯甲酸为原料, 分别经酯化、甲氧甲基保护或甲基化、酰肼化、氧化、醛酮缩合、脱保护基、O-法呢基化或O-异戊烯基化等步骤, 以5.6%～46%的总收率合成了8个未见文献报道的查尔酮类化合物1a～1h, 产物通过¹H NMR, ¹³C NMR, IR, MS进行了结构确证. 对所合成的目标化合物在3个标准活性筛选模型中进行了生物活性试验, 结果表明化合物1b在组织蛋白酶B (CAT-B)模型、化合物1e在细胞分离周期基因25表达的蛋白磷酸酶(CDC25)模型中表现出良好的活性.     

新型查尔酮类化合物的合成及其生物活性研究

以3,5-二羟基苯甲酸为原料, 分别经酯化、甲氧甲基保护或甲基化、酰肼化、氧化、醛酮缩合、脱保护基、O-法呢基化或O-异戊烯基化等步骤, 以5.6%～46%的总收率合成了8个未见文献报道的查尔酮类化合物1a～1h, 产物通过¹H NMR, ¹³C NMR, IR, MS进行了结构确证. 对所合成的目标化合物在3个标准活性筛选模型中进行了生物活性试验, 结果表明化合物1b在组织蛋白酶B (CAT-B)模型、化合物1e在细胞分离周期基因25表达的蛋白磷酸酶(CDC25)模型中表现出良好的活性.     

含有双氰基环丙烷甲酰胺类化合物的合成及生物活性

以含氰基及环丙烷的酰胺类杀菌剂为先导,设计合成了结构全新的双氰基环丙烷甲酰胺类化合物.通过Strecker反应获得中间体2-氨基-2-(取代)苯基乙(丙)腈(1a~1n),以氰乙酸乙酯和1,2-二溴乙烷环经环化、水解得到1-氰基环丙烷-1-甲酸(3),由化合物3和1经缩合反应得到目标化合物4a~4n,其结构均经NMR和HRMS表征.生物活性测试结果表明,在离体条件下,50μg/m L的化合物4f对瓜果腐霉和稻瘟菌的抑制活性分别为55.3%和67.1%;盆栽实验中,400μg/m L的化合物4f对黄瓜霜霉病和小麦白粉病的抑制活性分别为50%和85%,化合物4m对玉米锈病的抑制活性达100%;5μg/m L的化合物4c,4d,4g,4j和4m对蚊幼虫的致死率均60%,600μg/m L的化合物4h和4j对粘虫的致死率分别为66.7%和50%.     

Synthesis and Biological Activity of Novel Diphenyl N- Substituted Carbamimidoylphosphoramidate Derivatives

Abstract

An efficient synthesis of a series of novel diphenyl N-substituted carbamimidoyl phosphoramidate derivatives was accomplished in two steps. Diphenyl phosphorochloridate (1) was reacted with cyanamide (2) in the presence of 1,4–dimethylpiperazine as a base in THF at 50–55 °C to form an intermediate, diphenyl cyanophosphoramidate (3). Subsequently 3 was reacted with various aromatic/heterocyclic amines (4) in the presence of 1,4–dimethyl piperazine as a base at 55–60 °C to form the corresponding title compounds 5(a-k). The title compounds were tested for antiviral activity against Tobacco mosaic virus (TMV) in vitro, antibacterial and antifungal activities at two different concentrations of 50 and 100 μg/mL. The title compounds exhibited good antiviral and antimicrobial activities when compared to the standards.     

新型化学修饰siRNAs的设计、合成及生物活性研究

以含取代基团的苯酚和氯代环氧丙烷为原料,经多步反应合成了4种含芳香结构的化学修饰单体,针对靶向Mdm2 mRNA序列的siRNA,在其3'末端加入不同化学修饰的单体制备获得9个siRNAs.采用四甲基偶氮唑盐(MTT)法对所合成的siRNAs进行体外抗肿瘤活性、稳定性测试,结果显示化学修饰的siRNA8,siRNA11,siRNA15对人乳腺癌MCF-7细胞的活性和核酸酶稳定性均有显著提高,其中siRNA11体外对RNA水解酶的半衰期提高了10倍.     

Synthesis and Biological Activity of Novel Symmetrical Bis-2-phenyliminothiazolidine Derivatives

A series of novel symmetrical bis-2-phenyliminothiazolidine derivatives were designed and synthesized. The structures of all the title compounds were characterized by ¹H NMR and, in some cases, by ¹³C NMR, IR, and high-resolution mass spectra. Herbicidal activities were examined, and some of these compounds showed selectively herbicidal activity against Triticum aestivum. The type of linker between the two 2-phenyliminothiazolidines was crucial for the biological activities.     

新型含噻二唑环磺酰脲的合成及其生物活性的研究

新型含噻二唑环磺酰脲的合成及其生物活性的研究杨新玲,陈馥衡（北京农业大学应用化学系,北京,１０００９４）关键词噻二唑,磺酰脲,合成,生物活性磺酰脲是７０年代末出现的一类新型超高效除草剂［１］,它以极低的用量和良好的环境安全性而引起世人注目。２－氨基－...     

含嘧啶环的新拟除虫菊酯的合成及其生物活性的研究

拟除虫菊酯是一类高效、低毒、广谱性杀虫剂。嘧啶环是生物分子和医药中有较好活性的基团。本文拟在菊酯分子中引入嘧啶杂环,并测试其生物活性。我们以β-二酮为起始原料,分别与尿素、甲酰胺和脒缩合关环形成嘧啶,并进一步合成含嘧啶环的新拟除虫菊酯。所合成化合物的生物试验表明其中一些化合物对家蝇具有较好的击倒效应和杀虫效能。     

新型5-芳基-N-吡唑肟酯化合物的合成与杀菌活性

以水杨醛和丙酮缩合形成α,β不饱和酮,与水合肼和冰乙酸关环形成5-(2-羟基苯基)吡唑酮骨架,合成了10种未见报道的1-(5-(2-(苯氧基)苯基)-3-甲基)-4,5-二氢-N-吡唑肟酯类衍生物.通过元素分析、红外光谱及核磁共振氢谱测试技术对其结构进行了表征,初步测定了化合物的杀菌活性.结果表明,化合物对小麦赤霉病菌有较好的杀灭活性(其中化合物5f杀灭活性达到81.3%);化合物5g和5i对水稻纹枯病菌有中等杀灭活性,对稻瘟病菌的杀灭活性差.成了10种未见报道的1-(5-(2-(苯氧基)苯基)-3-甲基)-4,5-二氢-N-吡唑肟酯类衍生物.通过元素分析、红外光谱及核磁共振氢谱测试技术对其结构进行了表征,初步测定了化合物的杀菌活性.结果表明,化合物对小麦赤霉病菌有较好的杀灭活性(其中化合物5f杀灭活性达到81.3%);化合物5g和5i对水稻纹枯病菌有中等杀灭活性,对稻瘟病菌的杀灭活性差.     

新型1,3,4-噻二唑硫醚哒嗪酮衍生物的合成及生物活性

以糠氯酸为原料,与叔丁基肼盐酸盐环合制得2-叔丁基-4,5-二氯-3(2H)哒嗪酮,随后与新合成的5-胺基-1,3,4-噻二唑-2-硫醇衍生物发生亲核取代反应,反应合成了11个新型1,3,4-噻二唑硫醚哒嗪酮衍生物（7a~7k）。化合物的结构均经¹H NMR、¹³C NMR、IR、ESI-MS和元素分析表征。采用生长速率法测试了化合物对小麦赤霉病菌(G. zeae)、辣椒枯萎病菌(F. oxysporum)、苹果腐烂病菌(C. mandshurica)3种菌株的杀菌活性,在100 mg/L浓度下,化合物7a对小麦赤霉病菌的抑制率38.6%;7f对辣椒枯萎病菌的抑制率为54.6%。      

新型4,4-二甲基异噁唑-3-酮衍生物的合成及生物活性研究

以Baylis-Hillman加成物为起始原料,设计并合成了5个结构新颖的4,4-二甲基异唑-3-酮衍生物。所合成的化合物经IR、1HNMR和元素分析确证。生物活性测试结果表明,所合成的目标产物在2000gai/ha的剂量下均具有较好的除草活性。中间体1-(2,4-二氯苯基)-2-溴甲基丙烯酸乙酯具有杀虫活性,在600gai/ha的剂量下对朱砂叶螨防效为100%。     

Synthesis and Antimicrobial Activity Studies of a New Twin-Tailed Gemini Surfactant Bearing Piperazine Heterocycle

A novel twin-tailed gemini surfactant was synthesized with anhydrous piperazine, 4-nitrobenzyl chloride and 1-bromo octane as raw materials. Its structure was verified by infrared and ¹H NMR. The optimum synthetic conditions were established by orthogonal array design. The sterilizing antimicrobial performance of the twin-tailed gemini surfactant was measured by using the disc diffusion method against 18 bacteria. The study indicated that the target twin-tailed gemini surfactant shows excellent inhibition against Pseudomonas aeruginosa, Bacillus thuringiensis, Sphaericus, Bacillus mucilginosus, and Penicillium chrysogenum compared with conventional gemini surfactant and dialkyl monomeric surfactant at the concentration of 10 mg/ml.     

Synthesis of Some Novel Quinazolinone Derivatives with Anticipated Biological Activity

The behavior of the benzoxazinone derivative 1 toward nitrogen and carbon nucleophiles was investigated and yielded compounds 2 – 4 , 6 , and 7 . The oxadiazol derivatives 9 – 12 were obtained from the interaction of hydrazide 8 with benzoic acid in the presence of phosphoryl chloride and/or carbon disulfide in the presence of KOH followed by alkylation with ethyl iodide and hydrazinolysis with hydrazine hydrate, respectively. The quinazolinone derivatives 13 and 22 were utilized to construct new heterocyclic systems 15 – 21 , 23 , and 24 via interaction with different carbon electrophiles. Some of the newly synthesized compounds were characterized on the bases of spectroscopic data. Some of the synthesized compounds were screened for antimicrobial activity.