Derivatives of aryl amines containing the cytotoxic 1,4-dioxo-2-butenyl pharmacophore
作者:Amitabh Jha、Chandrani Mukherjee、Ashok K. Prasad、Virinder S. Parmar、Manjula Vadaparti、Umashankar Das、Erik De Clercq、Jan Balzarini、James P. Stables、Anuraag Shrivastav、Rajendra K. Sharma、Jonathan R. Dimmock
DOI:10.1016/j.bmcl.2010.01.098
日期:2010.3
Several series of compounds containing the 1,4-dioxo-2-butenyl moiety have been prepared as candidate cytotoxins, including the methyl N-arylmaleamates, methyl N-arylfumaramates, and N-arylmaleimides. In addition, the N-arylisomaleimides were synthesized which are the structural isomers of N-arylmaleimides. These compounds were evaluated against human Molt 4/C8 and CEM T-lymphocytes as well as murine
已制备了若干系列含有 1,4-二氧-2-丁烯基部分的化合物作为候选细胞毒素,包括N-芳基马来酸甲酯、N-芳基富马酸甲酯和N-芳基马来酰亚胺。此外,合成了N-芳基异马来酰亚胺,它是N-芳基马来酰亚胺的结构异构体。这些化合物针对人 Molt 4/C8 和 CEM T 淋巴细胞以及鼠 L1210 细胞进行了评估。N-芳基富马酸甲酯显示出最高的细胞毒性效力,尤其是甲基N-(3,4-二氯苯基)富马酸盐对 L1210 细胞的作用是马法兰的六倍,在 Molt 4/C8 试验中与该药物等效。通过使用模型苄基硫醇对代表性化合物进行硫醇化来证明所研究化合物的亲电性。甲基ñ - (3,4-二氯苯基)fumaramate和甲基ñ - (4-氯苯基)马来酰胺酸抑制人Ñ -myristoyltransferase,可能的分子靶标,在高微摩尔范围。QSAR 和分子建模揭示了许多分子的不同结构特征与细胞毒性效力之间的一些
Acetylcholinesterase inhibition by products generated in situ from the transformation of N-arylisomaleimides
作者:Juan A. Guevara、José G. Trujillo、Delia Quintana、Hugo A. Jiménez、Mónica G. Arellano、José R. Bahena、Feliciano Tamay、Fabiola J. Ciprés
DOI:10.1007/s00044-017-2122-4
日期:2018.3
the transformation reaction proved to be influenced by electronic effects. This was demonstrated qualitatively by 1H NMRspectroscopy and quantitatively by monitoring the kinetic of isomerization of N-phenylisomaleimide to N-phenylmaleimide. Subsequently, the first pseudo-order and activation energy (E a) of the process were determined. The compounds showed in situ influence on AChE inhibition. The derivatives
当N-芳基异马来酰亚胺在酶促反应条件下转化时,转化反应被证明受电子效应的影响。通过1 H NMR光谱定性地证明了这一点,并且通过监测N-苯基异马来酰亚胺向N-苯基马来酰亚胺的异构化动力学定量地证明了这一点。随后,第一伪阶和活化能(E a)的过程已确定。这些化合物对AChE抑制作用具有原位影响。具有吸电子基团的衍生物表现出比具有供电子基团的衍生物更好的效果。电子实验表明配体评估了与CAS位点之间已建立的相互作用。这表明这些化合物可用于产生更好的可逆和竞争性AChE抑制剂。
There is described a process for the production of maleimides, particularly N-substituted maleimides or N,N'-bis-maleimides, by isomerization of the corresponding isoimides in the presence of specific catalysts, such as mixtures of phenol and triethylamine. Maleimides of high purity and in good to very good yields under mild conditions and with the use of small amounts of catalyst are obtained by the process according to the invention.
2-Chloro-1,3-dimethylimidazolinium Chloride. 2. Its Application to the Construction of Heterocycles through Dehydration Reactions
作者:Toshio Isobe、Tsutomu Ishikawa
DOI:10.1021/jo9909756
日期:1999.9.1
2-Chloro-1,3-dimethylimidazolinium chloride (DMC) (1) can act as a powerful dehydrating equivalent to DCC (2) under nearly neutral conditions. Its application to the construction of heterocycles through dehydration reactions is described.