Boric acid catalyzed chemoselective reduction of quinolines
作者:Dipanjan Bhattacharyya、Sekhar Nandi、Priyanka Adhikari、Bikash Kumar Sarmah、Monuranjan Konwar、Animesh Das
DOI:10.1039/c9ob02673h
日期:——
Boricacid promoted transfer hydrogenation of substituted quinolines to synthetically versatile 1,2,3,4-tetrahydroquinolines (1,2,3,4-THQs) was described under mild reaction conditions using a Hantzsch ester as a mild organic hydrogen source. This methodology is practical and efficient, where isolated yields are excellent and reducible functional groups are well tolerated in the N-heteroarene moiety
Synthesis, stereoelectronic characterization and antiparasitic activity of new 1-benzenesulfonyl-2-methyl-1,2,3,4-tetrahydroquinolines
作者:Romina J. Pagliero、Sabrina Lusvarghi、Adriana B. Pierini、Reto Brun、María R. Mazzieri
DOI:10.1016/j.bmc.2009.11.010
日期:2010.1
The synthesis and full 3D structural characterization of nine new 1-benzenesulfonyl-2-methyl-1,2,3,4-tetrahydroquinoline derivatives are reported. These belong to a library whose rationale for the design was the previous knowledge of the biological relevant properties of both structural moieties. From protozoan antiparasitic screening, compounds 3 demonstrated interesting activity against Trypanozoma
报道了九种新的1-苯磺酰基-2-甲基-1,2,3,4-四氢喹啉衍生物的合成和完整的3D结构表征。这些属于一个图书馆,该图书馆的设计依据是对这两个结构部分的生物学相关特性的先前了解。从原生动物的抗寄生虫筛选中,化合物3表现出对克鲁斯氏锥虫的有趣活性,且细胞毒性低。此外,大多数化合物对恶性疟原虫具有中等活性。其中3和9可被视为进一步优化的铅支架。BS上的取代基不影响3D结构性质,而11 H NMR光谱表明存在分子内弱氢键C–H⋯OS 。分子建模和X射线晶体学也证实了这一发现,这与化合物的构象偏爱有关。
Core‐Shell Nano‐Cobalt Catalyzed Chemoselective Reduction of N‐Heteroarenes with Ammonia Borane
作者:Sanxia Chen、Wenxuan Xue、Conghui Tang
DOI:10.1002/cssc.202201522
日期:2022.12.7
Awesome to the core: A core-shell nano-cobalt catalyst was reported for the chemoselective reduction of N-heteroarenes with ammonia borane under mild conditions, various N-heteroarenes including bioactive compounds were hydrogenated smoothly, and reduction sensitive functional groups such as cyano, ester, and halogens were well-tolerated. This novel method was applied in the synthesis of medicinally
Awesome to the core:一种核-壳纳米钴催化剂被报道用于在温和条件下用氨硼烷化学选择性还原N-杂芳烃,包括生物活性化合物在内的各种N-杂芳烃被顺利加氢,还原敏感的官能团如氰基,酯和卤素的耐受性良好。这种新方法也被应用于具有重要药用价值的分子和有机储氢系统的合成。