Synthesis and Biological Evaluation of 7-Azaisoindigo Derivatives
作者:Zhao-Hui Wang、Tao Wang、Shi-Ning Yao、Jing-cai Chen、Wei-Yi Hua、Qi-Zheng Yao
DOI:10.1002/ardp.200900268
日期:2010.3
A series of novel 7‐azaisoindigo derivatives 3–14 were designed, synthesized, and structurally characterized by IR, 1H‐NMR, 13C‐NMR, mass spectra, and elemental analyses. Their antiproliferative activities were evaluated in a hormone‐independent prostate cancer cell line DU145. Among them, compounds 8, 9, 14 showed the highest activities. Our study also showed that compounds 7, 11, 12 exhibited higher
Ambident heterocyclic reactivity: the alkylation of pyrrolopyridines (azaindoles, diazaindenes)
作者:Indumathy Mahadevan、Malcolm Rasmussen
DOI:10.1016/s0040-4020(01)87211-2
日期:1993.8
6-methyl-7-azaindole, and the parent 4-, 5-, 6-, and 7-azaindole systems (as anions in dimethylformamide) were alkylated with a variety of primary alkylating agents. The relative importance of charge, product development, and steric approach control in determining the alkylation pattern (pyrrole versus pyridine ring alkylation) are discussed within a framework of variable SN2 transition state structures
7-甲基-6-氮杂吲哚,7-乙酰氨基-4-氮杂吲哚,取代的4-氨基-,2-甲基和6-甲基-7-氮杂吲哚以及母体4-,5-,6-和7 -氮杂吲哚体系(作为二甲基甲酰胺中的阴离子)用各种伯烷基化剂烷基化。在可变的S N 2过渡态结构的框架内,讨论了电荷,产物发展和空间途径控制在确定烷基化模式(吡咯对吡啶环烷基化)中的相对重要性。边界轨道因素似乎相对微不足道。这些杂环系统的电荷分布,轨道和能量学是从头算起的分子轨道计算(STO-3G级)。在某些情况下,涉及缔合相邻基团和烷基化剂之间氢键的特定缔合对于确定烷基化模式很重要。
AlCl<sub>3</sub>/PCC-SiO<sub>2</sub>-Promoted Oxidation of Azaindoles and Indoles
A simple and efficient method is described for the oxidation of 7-azaindoles and indoles to 7-azaisatins and isatins using pyridinium chlorochromate-silica gel (PCC-SiO2) with the aid of Lewis acid catalyst aluminium chloride (AlCl3) in dichloroethane. Simplicity of the reaction conditions, easy workup procedure, and good yields are the key features of this protocol.
Potent Platelet-Derived Growth Factor-.BETA. Receptor (PDGF-.BETA.R) Inhibitors: Synthesis and Structure-Activity Relationships of 7-[3-(Cyclohexylmethyl)ureido]-3-{1-methyl-1H-pyrrolo[2,3-b]pyridin-3-yl}quinoxalin-2(1H)-one Derivatives
previously that 7-[3-(cyclohexylmethyl)ureido]-3-1-methyl-1H-pyrrolo[2,3-b]pyridin-3-yl}quinoxalin-2(1H)-one (7d-6) has considerable potency as a PDGF inhibitor. This compound showed potent inhibitory activity in a PDGF-induced CPA (Cell Proliferation Assay) and APA (Auto-Phosphorylation Assay) (IC50 = 0.05 micromol/l in CPA, 0.03 micromol/l in APA). Therefore, we tried to develop a novel and effective