New 2,9-disubstituted-1,10-phenanthroline derivatives with anticancer activity by selective targeting of telomeric G-quadruplex DNA
作者:Anda-Mihaela Craciun、Alexandru Rotaru、Corneliu Cojocaru、Ionel I. Mangalagiu、Ramona Danac
DOI:10.1016/j.saa.2020.119318
日期:2021.3
heterocycles have been designed and synthesized as G-quadruplex DNA stabilizers. Ten compounds were evaluated for the in vitro anticanceractivity against 60 human tumor cell lines panel, four of them showing a very good inhibitory activity on several cell lines. To assess the ability of the most active compounds to interact with G-quadruplex DNA (G4-DNA), circular dichroism experiments were performed. The
vinyl arenes with trimethylsilylazide and molecular oxygen as stoichiometric oxidant was achieved. In contrast to photocatalysts based on iridium, ruthenium, or organic dyes, [Cu(dap)2]Cl or [Cu(dap)Cl2] were found to be unique for this transformation, which is attributed to their ability to interact with the substrates through ligand exchange and rebound mechanisms. CuII is proposed as the catalytically
用三甲基甲硅烷基叠氮化物和分子氧作为化学计量氧化剂实现了乙烯基芳烃的可见光加速氧化叠氮化。与基于铱,钌或有机染料的光催化剂相反,发现[Cu(dap)2 ] Cl或[Cu(dap)Cl 2 ]对于这种转化是独特的,这归因于它们与金属,金属或金属的相互作用。底物通过配体交换和反弹机制。有人建议将铜II作为催化活性物质,将其与叠氮化物配位后将进行光加速均质分解,从而形成铜I和叠氮化物自由基。这种激活原则(CU II -X→铜我+ X 。)开启了铜基光催化的新途径。
Stereoselective synthesis of (<i>Z</i>)-1,3-bis(α,β-unsaturated carbonyl)-isoindolines from aldehydes and phenacyl azides under metal free conditions
Here in the present manuscript, we report our observation of an unprecedented stereoselective synthesis of 2H-isoindolin-1,3-ylidenes from 2-(formylphenyl)acrylates and phenacylazide in the presence of piperidine. Unlike in our previous findings, in which we accessed 3-keto-isoquinolines from the same starting materials under slightly modified reaction conditions, this unexpected one-pot tandem reaction
在本手稿中,我们报告了我们在哌啶存在下从 2-(甲酰基苯基)丙烯酸酯和苯甲酰肼中前所未有的立体选择性合成 2 H -isoindolin-1,3-ylidenes的观察结果。与我们之前的发现不同,我们在稍加修改的反应条件下从相同的起始材料中提取 3-酮基异喹啉,这种意想不到的一锅串联反应提供了一种有效且简单的方法来获取各种高度官能化的乙基 ( Z ) -2-(( Z )-3-(2-oxo-2-arylethylidene)-2,3-dihydro-1 H -benzo[ e ]isoindol-1-ylidene)-醋酸盐,产率非常好(高达91%)。本方法与多种官能团兼容。
Synthesis and biological evaluation of a new class of triazin–triazoles as potential inhibitors of human farnesyltransferase
A new synthesis of ethynyldimethoxytriazine 1, an important platform-compound for developing new chemical entities for anticancer research and for other biological applications, is described. Compound 1 was further reacted with azides 5a–i to provide triazin–triazoles 2a–i, which were tested on human farnesyltransferase and on the NCI-60 human tumor cell lines. Synthesis of other dimethoxytriazine derivatives 15 and 16, linked to a sp 2 or a sp 3 carbon atom were also studied.
Transition metal-free one-pot synthesis of substituted pyrroles by employing aza-Wittig reaction
作者:Chetna Jadala、Budaganaboyina Prasad、A. V. G. Prasanthi、Nagula Shankaraiah、Ahmed Kamal
DOI:10.1039/c9ra06778g
日期:——
A mild and metal-freeone-pot synthetic strategy has been developed for the construction of substituted pyrroles by employing aza-Wittig reaction from a unique and unexplored combination of chromones and phenacyl azides. This method does not compromise the diverse substitutions on both the phenacyl azides and chromones. The merits of this method are wide substrate scope, easy functionalization, short