A series of novel isoxazolefunctionalized pyrazolo[3,4‐b]pyridine derivatives 5a‐n were prepared, respectively, initiated from 6‐thiophenyl‐4‐(trifluoromethyl)‐1H ‐pyrazolo[3,4‐b ]pyridin‐3‐amine 3 through selective N ‐propargylation, and these N ‐propargylated compounds 4 were cyclized with aryloximes by using of sodium hypochlorite, and obtained the title products 5a‐n . All the final products 5a‐n
一系列新颖的异恶唑官能吡唑并[3,4-b]吡啶衍生物的图5a-n的制备,分别从6-噻吩基-4-(三氟甲基)-1发起ħ -吡唑并[3,4- b ]吡啶-3-胺3通过选择性N炔丙基化,而这些N炔丙基化的化合物4通过使用次氯酸钠与芳基肟环合,获得标题产物5a-n。所有最终产品5a‐n已提交针对四种癌细胞系(例如“ HeLa-宫颈癌(CCL-2)”)的抗癌活性;COLO 205-结肠癌(CCL‐222);HepG2-肝癌(HB-8065);MCF7-乳腺癌(HTB-22)”;发现化合物5c,5d和5h在微摩尔浓度下具有更突出的抗癌活性。
Cascade Process for Direct Transformation of Aldehydes (RCHO) to Nitriles (RCN) Using Inorganic Reagents NH<sub>2</sub>OH/Na<sub>2</sub>CO<sub>3</sub>/SO<sub>2</sub>F<sub>2</sub> in DMSO
作者:Wan-Yin Fang、Hua-Li Qin
DOI:10.1021/acs.joc.8b03164
日期:2019.5.3
and practical process for direct conversion of aldehydes to nitriles was developed feathering a wide substrate scope and great functional group tolerability (52 examples, over 90% yield in most cases) using inorganic reagents (NH2OH/Na2CO3/SO2F2) in DMSO. This method allows for transformations of readily available, inexpensive, and abundant aldehydes to highly valuable nitriles in a pot, atom, and
使用无机试剂(NH 2 OH / Na 2 CO )开发了一种简单,温和且实用的方法,将醛直接转化为腈,可在较宽的底物范围内实现出色的官能团耐受性(52个实例,大多数情况下产率超过90%)3 / SO 2 F 2)在DMSO中。该方法允许以易用,原子和步经济的方式将易于获得,廉价且丰富的醛转化为高度有价值的腈,而无需过渡金属。该协议将作为将氰基部分安装到复杂分子的强大工具。
Structure, Spectroscopy, and Electrochemistry of Manganese(I) and Rhenium(I) Quinoline Oximes
作者:Danh X. Ngo、Wesley W. Kramer、Brendon J. McNicholas、Harry B. Gray、Bradley J. Brennan
DOI:10.1021/acs.inorgchem.8b02862
日期:2019.1.7
Reactions of α- and β-diimine quinoline aldoximes with Mn(I) and Re(I) tricarbonyl halides afford quinoline oxime complexes. Both Mn(I) and Re(I) complexes experience severe geometric strain due to ligand steric interactions: 6-membered metallocycles exhibit more pronounced distortions than 5-membered ones, consistent with density functional theory structural analyses. Such distortions likely also
Synthesis and antiproliferative properties of isoxazole analogs containing dibenzosuberane moiety
作者:Manjunath Moger、Ashok Pradhan、Apoorva Singh、Darshan Raj Chenna Govindaraju、Rama Mohan Hindupur、Hari N. Pati
DOI:10.1007/s00044-015-1497-3
日期:2016.3
AbstractA series of twelve novel isoxazole analogscontaining dibenzosuberane moiety were synthesized using convergent synthesis approach. Newly synthesized compounds were well characterized by mass spectroscopy, IR and NMR spectroscopy. All the compounds were screened for their antiproliferative property against HepG2 and HeLa cell lines. Among them, compounds 7a, 7b, 7c, 7g and 7h were found active
Highly selective oximation of aldehydes by reusable heterogeneous sandwich-type polyoxometalate catalyst
作者:Shen Zhao、Lu Liu、Yu-Fei Song
DOI:10.1039/c2dt30092c
日期:——
The selectivity of oximation of a variety of aliphatic aldehydes and polycyclic aromatic aldehydes as substrates has been greatly improved by applying a reusable heterogeneous sandwich-type polyoxometalate as catalyst under mild conditions.