2,5-二氨基噻吩-3,4-二羧酸二乙酯衍生物的合成及抗肿瘤活性研究

以含硫杂环噻吩为母核,设计并合成了30个2,5-二氨基噻吩-3,4-二羧酸二乙酯衍生物,经1HNMR、13CNMR和HRMS进行了结构确证.用噻唑蓝(MTT)法测定该系列化合物对HeLa(人宫颈癌)、HT-29(人结肠癌)、A549(人非小细胞肺癌)、Hep G2(人肝癌)四种肿瘤细胞的体外抗增殖活性.结果表明,部分化合物表现出良好的抗增殖活性,其中2-(4-(三氟甲氧基)苯甲酰胺基-5-(5-硝基噻吩-2-基)亚甲基氨基噻吩-3,4-二羧酸二乙酯(C25)对HT-29、A549两种肿瘤细胞均表现出明显的抗增殖活性, IC50值分别为(0.35±0.07)和(0.66±0.09)μmol/L; 2-(3-(三氟甲基)苯甲酰胺基)-5-(5-硝基噻吩-2-基)亚甲基氨基噻吩-3,4-二羧酸二乙酯(C29)对HT-29、Hep G2两种肿瘤细胞也表现出明显的抗增殖活性, IC50值分别为(0.47±0.03)和(0.41±0.04)μmol/L,其抑制活性均优于阳性对照药阿霉素(DOX)[对HT-29、A549、Hep G2的IC50值分别为(1.15±0.03)、(0.86±0.07)、...     

基于阿霉素纳米共递体系的抗肿瘤联合治疗

肿瘤是当前全球范围内的主要致死病因,而化疗仍是抗肿瘤治疗的重要手段之一。阿霉素(DOX)是一种临床上广泛使用的蒽环类广谱抗肿瘤药物,但是它的治疗效果受到其严重副作用的限制,包括累积性心脏毒性和剂量限制性骨髓抑制。研究人员长期致力于寻找降低DOX毒副作用的方法,而依托于纳米共递体系的抗肿瘤联合治疗策略获得广泛关注。它们能够实现药物在病灶区域的靶向富集和定点释放,通过药物联用降低DOX对正常细胞组织的不良反应,并在一定程度上逆转肿瘤细胞的多药耐药性。本综述将聚焦于近年来基于DOX的纳米共递体系用于抗肿瘤联合治疗策略的构筑,重点介绍DOX联合其他化疗药物、基因药物、气体分子或天然药物进行抗肿瘤治疗的研究进展,并对其面临的挑战和发展趋势进行展望。     

二苯丁脂类木脂素及衍生物的合成和抗肿瘤活性研究

以胡椒醛和藜芦醛为原料, 通过Stobbe缩合和烷基化反应构建木脂素骨架、手性试剂拆分, 经官能团转换后, 得到了10个二苯丁脂类木脂素, 其中4个为天然产物. 合成得到的化合物进行了抗肿瘤活性测定, 结果表明, 部分化合物物具有较强的抑制乳腺癌细胞活性.     

Two new antitumor diterpenes from Pinus sylvestris

Two new diterpenes, 15-ethyl-18-methyl pinifolate （1） and 18-hydroxy-labda-8（17）, 13E-dien-15-acetate （2）, were isolated from the needles of Pinus sylvestris. Their structures were elucidated by spectroscopic methods, including 2D-NMR spectra. Compound 1 exhibited the significant cytotoxic activity against the human carcinoma cell lines Hela, SK-N-SH and BEL-7402 in vitro.     

Synthesis and cytotoxic activity of novel curcumin analogues

Five novel curcumin analogues bearing different substituents at 4-position of phenyl group were synthesized. Their structures were confirmed by NMR and HRMS spectrum. Their cytotoxic activities against six tumor cell lines were tested by the standard MTT assay in vitro. The results indicated that four analogues （1A-1C, 1E） with solubilizing moieties showed selective potent cytotoxicity against HepG2, HeLa and CT26 cell lines, and analogue 1A and 1C exhibited more potent cytotoxicity than curcumin against CT26 cell line. It was suggested that introduction of appropriate substituents to 4-position of phenyl group might be a potential option for structural modification of curcumin.     

氟尿嘧啶柱撑镁铝层状复合氢氧化物的结构与性能表征

氟尿嘧啶(Fluorouracil, FLU)是一种常用抗肿瘤药物,用于治疗乳腺癌、卵巢癌、胰腺癌、胃癌及头颈部癌等恶性实体瘤.氟尿嘧啶在体内转化为磷酸脱氧核糖氟尿嘧啶核苷,通过与胸苷酸合成酶复合减少DNA合成、通过伪代谢产物阻断RNA及蛋白质合成导致瘤体细胞死亡.     

光催化无过渡金属参与的烯烃的缩醛-吡啶化三组分反应

吡啶作为优势骨架存在于90种上市药物中.由于吡啶基团在药物研发中的广泛应用,亟需开发新方法构建具有该药效团的结构多样性的分子骨架.在过去十年中,烯烃的双官能团化反应逐渐成为构建含吡啶的多官能团化合物的强有力手段.虽然目前该领域取得了一定进展,但开发环境友好的、高效的合成方法仍然是该领域的研究热点.醛基是一种可以转化为醇...     

靶向鞘氨醇激酶1的Jaspine B类似物的合成及抗肿瘤活性研究

Jaspine B,又称为pachastrissamine,是从冲绳海绵Pachastrissa sp和Jaspis sp中分离得到的一种天然存在的脱水植物鞘氨醇衍生物,其异构体2?epi?jaspine B对鞘氨醇激酶和肿瘤细胞系具有强效抑制活性.在此基础上,我们通过对2?epi?jaspine B进行结构修饰制备其...     

Synthesis, Crystal Structure and Antitumor Activity of 4-tert-Butyl-N-（2-fluorophenyl）-5- （1H-1,2,4-triazol-1-yl）-thiazol-2-amine

The title compound has been synthesized by the reaction of 1-bromo-3,3-dime- thyl-1- (1H-1,2,4-triazol-1-yl)butan-2-one with 1-(2-fluorophenyl)thiourea, and its crystal structure was determined by single-crystal X-ray diffraction. The crystal belongs to the orthorhombic system, space group Pbca with a=15.2568(6), b=12.1533(5), c=16.7307(7) , Z=8, V=3102.2(2)3, Mr=317.39, Dc=1.359 g/cm3, S=1.05, μ=0.223 mm-1, F(000)=1328, the final R=0.034 and wR=0.097 for 2590 observed reflections (I>2σ(I)). X-ray crystal structure presents the intramolecular N-H…N hydrogen bond, which plays an important role in stabilizing the crystal structure. In addition, the preliminary biological test on the title compound shows good antitumor activity, with IC50 of 0.122 μmol/mL against the Hela cell line.