Imidazoquinoline and tetrahydroimidazoquinoline compounds that contain amide functionality at the 1-position are useful as immune response modifiers. The compounds and compositions of the invention can induce the biosynthesis of various cytokines and are useful in the treatment of a variety of conditions including viral diseases and neoplastic diseases.
Structural Analysis of ATP Analogues Compatible with Kinase-Catalyzed Labeling
作者:Sujit Suwal、Chamara Senevirathne、Satish Garre、Mary Kay H. Pflum
DOI:10.1021/bc300404s
日期:2012.12.19
Kinase-catalyzed protein phosphorylation is an important biochemical process involved in cellular functions. We recently discovered that kinases promiscuously accept γ-modified ATPanalogues as cosubstrates and used several ATPanalogues as tools for studying protein phosphorylation. Herein, we explore the structural requirements of γ-modified ATPanalogues for kinase compatibility. To understand the
激酶催化的蛋白质磷酸化是涉及细胞功能的重要生化过程。我们最近发现激酶混杂地接受 γ 修饰的 ATP 类似物作为共底物,并使用几种 ATP 类似物作为研究蛋白质磷酸化的工具。在此,我们探索了 γ 修饰的 ATP 类似物对激酶相容性的结构要求。为了了解接头长度和组成的影响,合成了一系列 ATP 类似物,并通过定量质谱法确定激酶催化标记的效率。这项关于影响激酶共底物混杂的因素的研究将使设计用于各种激酶催化标记反应的 ATP 类似物成为可能。
Selective Monoacylation of Symmetrical Diamines via Prior Complexation with Boron
作者:Zhongxing Zhang、Zhiwei Yin、Nicholas A. Meanwell、John F. Kadow、Tao Wang
DOI:10.1021/ol0300773
日期:2003.9.1
[reaction: see text] Pretreatment of a symmetrical primary or secondary diamine with 9-BBN prior to the addition of an acyl chloride significantly suppressed undesired diacylation, and the product of monoacylation predominated. The reactive preference is interpreted as the result of a selective deactivation of one nitrogen atom of the diamine by 9-BBN.
Imidazole-Catalyzed Monoacylation of Symmetrical Diamines
作者:Sanjeev K. Verma、B. N. Acharya、M. P. Kaushik
DOI:10.1021/ol101604q
日期:2010.10.1
An imidazole-catalyzed protocol for monoacylation of symmetricaldiamines has been developed. The protocol gave selective monoacylation of aliphatic (cyclic and acyclic) primary and secondary diamines. In the reaction, imidazole acts as both catalyst and a leaving group. Different monoacylated piperazines and other diamines were synthesized at room temperature in an ethanol/water solvent system.
Efficient and continuous monoacylation with superior selectivity of symmetrical diamines in microreactors
作者:Ram Awatar Maurya、Phan Huy Hoang、Dong-Pyo Kim
DOI:10.1039/c1lc20765b
日期:——
Efficient and continuous monoacylation of symmetricaldiamines performed in microreactors yielded superior selectivity to that predicted by statistical considerations. It is highly valuable that the kinetically controlled product in high yields was achieved without any special catalyst at ambient temperature.