A Unique Approach to the Concise Synthesis of Highly Optically Active Spirooxazolines and the Discovery of a More Potent Oxindole-Type Phytoalexin Analogue
作者:Xianxing Jiang、Yiming Cao、Yiqing Wang、Luping Liu、Fangfang Shen、Rui Wang
DOI:10.1021/ja106349m
日期:2010.11.3
Drug-lead synthesisthroughrapid construction of chiral molecular complexity around the biologically relevant framework using a highly efficient strategy is a key goal of organic synthesis. Molecules bearing a spirooxindole-type framework exhibit important bioactivities. Herein, we present a highly efficient and convenient strategy that allows rapid construction of unique optically active spiro[oxazoline-3
Enantioselective Michael/Cyclization Reaction Sequence: Scaffold-Inspired Synthesis of Spirooxindoles with Multiple Stereocenters
作者:Yiming Cao、Xianxing Jiang、Luping Liu、Fangfang Shen、Futing Zhang、Rui Wang
DOI:10.1002/anie.201104216
日期:2011.9.19
A‐spiro‐ing: The title reaction of α‐isothiocyanato imides and methyleneindolinones has been realized for the first time using 1 as the catalyst. This newly developed synthetic method provides a simple, efficient, and environmentally friendly way to access, in an enantioselective manner, densely functionalized spirooxindoles having three contiguous stereogenic centers.
Synthesis of Bicyclic Pyrimidine Derivatives as ATP Analogues
作者:Gergely M. Makara、William Ewing、Yao Ma、Edward Wintner
DOI:10.1021/jo015647w
日期:2001.8.1
A highly efficient and general solid-phase synthesis of bicyclic pyrimidine derivatives that target purine dependent proteins is reported. The synthesis of the key intermediate, 4,6-disubstituted-5-amino-pyrimidine, involved reduction of the corresponding nitro derivatives using 1,1'-dioctyl-viologen in a triphasic milieu. The mild reduction conditions enable the use of any acid labile solid support
Enantioselective Synthesis of Cyclic Thioureas via Mannich Reaction and Concise Synthesis of Highly Optically Active Methylthioimidazolines: Discovery of a More Potent Antipyretic Agent
作者:Xianxing Jiang、Yiqing Wang、Gen Zhang、Dan Fu、Futing Zhang、Ming Kai、Rui Wang
DOI:10.1002/adsc.201100288
日期:2011.7
synthesis by the rapid construction of chiral molecular complexity around the biologically relevant framework using a highly efficient strategy is a key goal of organic synthesis. Herein, a highly efficient and convenient strategy that allows the rapid synthesis of highly optically active methylthioimidazolines through the novel rosin‐derived thiourea‐catalyzedasymmetric synthesis of cyclic thioureas with
Design, synthesis and evaluation of multi-pharmacophore-containing spiropolycyclic harmaline-based hybrids as anticancer agents
作者:Shuang Chen、Ze-Hua Yu、Wei-Na Wang、Zi-Yue Chen、Bo-Wen Pan、Lin Chen、Ying Zhou、Xiong-Wei Liu、Xiong-Li Liu
DOI:10.1039/d2nj05987h
日期:——
represents the first example of the synthesis of naturalproduct harmaline-based spiropolycyclic scaffolds, and expands the chemical space of biologically significant harmaline derivative species. The newly synthesized structurally diverse compounds were evaluated for their in vitro anticancer activities. These studies indicate that some compounds displayed good anticancer activity against three tumor cells
在这里,我们展示了第一个天然产物 harmaline 及其衍生物在与异硫氰酸酯的正式 [3+2] 环加成中用作有用的 N-C 合成子的第一个例子,用于构建包含两个相邻季立构中心的基于螺多环 harmaline 的杂化物库。在温和条件下,以 Et 3 N 为催化剂,20:1 dr 以高达 90% 的收率顺利提供了这些产品。据我们所知,这也是合成天然产物 harmaline 螺多环支架的第一个例子,并扩展了具有生物学意义的 harmaline 衍生物种的化学空间。对新合成的结构多样的化合物进行了体外评估抗癌活动。这些研究表明,某些化合物对三种肿瘤细胞(A549、K562 和 PC-3)显示出良好的抗癌活性。其中化合物3cb作用于A549时活性最好,与顺铂作用相似。初步机制研究表明,化合物3cb通过半胱天冬酶依赖性途径诱导 A549 细胞凋亡。这些结果表明,化合物3cb可以作为药物开发的良好先导物。