exhibited appreciable anticancer activity against MCF-7 and HCT-116 cells. Particularly, compounds 9g and 8b demonstrated the most significant inhibitory effect against HCT-116 and MCF-7 cells, with inhibition ratios of 25.56% and 26.46%, respectively. Additionally, the synthesized pyridine[2,3-d]pyrimidine derivatives containing a urea group moieties exhibited antitumor activities against MCF-7 and HCT-116
Synthesis of 3(2-haloethyl)aryltriazenes and study of their reactions in aqueous solution
作者:J. William Lown、Ranjit Singh
DOI:10.1139/v81-198
日期:1981.5.1
rates of decomposition in aqueous media at pH7 were determined polarographically employing the electrochemically active triazene moiety. In two selected cases the rates of decomposition increase markedly with lowered pH in the range 9.3 to 4.65. The products of aqueousdecomposition, both volatile and involatile, were identified and quantitated by gc and gc–ms. Discriminationbetweenalternative decomposition
Polarisation by cation formation: a method for influencing the selectivity of radical chlorination
作者:J. Kollonitsch、G. A. Doldouras、V. F. Verdi
DOI:10.1039/j29670001093
日期:——
Polarisation by cationformation (e.g., by protonation or by oxocarbonium ion formation) exerts a distinct and systematic effect on the selectivity of radicalchlorination of aliphatic acids, amines, and alcohols. A qualitative correlation is demonstrated between the magnitude of deshielding of a given proton (as expressed by the downfield shift in the 1H n.m.r. spectrum) and its “deactivation” as
通过阳离子形成(例如通过质子化或通过氧代碳鎓离子形成)的极化对脂肪族酸,胺和醇的自由基氯化的选择性产生了明显而系统的影响。在给定质子的去屏蔽强度(由1 H nmr光谱中的低场位移表示)与它的“失活”之间存在定性相关性,该失活由氯原子对它的抽象速率降低表示。描述了一种方便的方法,用于制备新的和已知的脂族单-和多氯胺。
Neue Synthesen von 2-Amino-5,6-dihydro-4H-1,3-thiazinen
作者:H. W. Schubert、O. Behner
DOI:10.1002/ardp.19683011006
日期:——
Es wird die Darstellung von 2‐Amino‐dihydrothiazinen 4 durch Behandlung von 2‐tert.‐Butylamino‐dihydrothiazinen 6, N‐γ‐Hydroxypropyl‐N′‐tert.‐butyl‐thioharnstoffen 11 oder 2‐Acylamino‐dihydrothiazinen 14 mit Säuren beschrieben.
Development of New 1,3-Diazaphenoxazine Derivatives (ThioG-Grasp) to Covalently Capture 8-Thioguanosine
作者:Yasufumi Fuchi、Hideto Obayashi、Shigeki Sasaki
DOI:10.3390/molecules20011078
日期:——
The derivatives of 8-thioguanosine are thought to be included in the signal transduction system related to 8-nitroguanosine. In this study, we attempted to develop new 1,3-diazaphenoxazine (G-clamp) derivatives to covalently capture 8-thioguanosine (thioG-grasp). It was expected that the chlorine atom at the end of the linker would be displaced by the nucleophilic attack by the sulfur atom of 8-thioguanosine via multiple hydrogen-bonded complexes. The thioG-grasp derivative with a propyl linker reacted efficiently with 8-thioguanosine to form the corresponding adduct.