Enhanced reactivity of twisted amides inside a molecular cage
作者:Hiroki Takezawa、Kosuke Shitozawa、Makoto Fujita
DOI:10.1038/s41557-020-0455-y
日期:2020.6
When an amide group is distorted from its planar conformation, the conjugationbetween the nitrogen lone pair and the π* orbital of the carbonyl is disrupted and the reactivity towards nucleophiles is enhanced. Although there are several reports on the synthesis of activated twisted amides, amide activation through mechanical twisting is much less common. Here, we report twisted amides that are stabilized
New resveratrol (RES) analogs were developed by replacing the aromatic ‘core’ of our initial naphthalene-based RES analogs with pseudo-heterocyclic (salicylaldoxime) or heterocyclic (benzofuran, quinoline, and benzothiazole) scaffolds. The resulting analogs were tested for their antiproliferative and vasorelaxing effect, two typical properties shown by RES. Some of the new compounds confirmed strong
通过用假杂环(水杨醛肟)或杂环(苯并呋喃,喹啉和苯并噻唑)支架取代我们最初的萘基RES类似物的芳族“核心”,开发了新的白藜芦醇(RES)类似物。测试了所得类似物的抗增殖和血管松弛作用,这是RES显示的两个典型特性。一些新化合物证实了很强的抗增殖活性,可与以前以最具活性的萘基类似物发现的抗坏血酸相媲美。特别地,3-(3,5-二羟基苯基)-7-羟基喹啉表现出最有效的抗增殖作用(IC 50 = 17.4μM)。在血管测定中,最高效力(pIC 50 = 4.92)和功效(E max 用2-(3,5-二羟基苯基)-6-羟基苯并噻唑获得=(88.2%)。这些化合物的构象分析表明,对MDA-MB-231癌细胞的抗增殖活性可能与活性最高的化合物的共同空间分布有关,尤其是与三个酚基的空间排列有关。此外,血管松弛性质与通过静电分子电势(ESP)测得的电子性质具有良好的相关性。
Structural Studies on Bioactive Compounds. 23. Synthesis of Polyhydroxylated 2-Phenylbenzothiazoles and a Comparison of their Cytotoxicities and Pharmacological Properties with Genistein and Quercetin
作者:Malcolm F. G. Stevens、Carol J. McCall、Peter Lelievald、Peter Alexander、Audrey Richter、Donna E. Davies
DOI:10.1021/jm00037a020
日期:1994.5
receptor tyrosine kinase or the PDGF receptor tyrosine kinase in a standard mitogenesis assay utilizing human fibroblasts, no discrimination was observed. In this assay, the compounds inhibited DNA synthesis when added to cells during S phase. This suggests that inhibition could not be interpreted in terms of tyrosine kinase inactivation but more likely as a relatively broad specificity for the ATP-binding
Sorm; Novotny, Chemicke Listy, 1954, vol. 49, p. 901,907
作者:Sorm、Novotny
DOI:——
日期:——
SMALL MOLECULE ACTIVATORS OF INTERFERON REGULATORY FACTOR 3 AND METHODS OF USE THEREOF
申请人:Neuralexo, Inc.
公开号:US20220395500A1
公开(公告)日:2022-12-15
Small molecule activators of interferon regulatory factor (IRF), such as IRF3, and methods of use are provided. In particular, compositions and methods for upregulating interferon regulatory factor 3 (IRF3) activity, such as in the brain following stroke to provide potent protection against ischemic brain injury, to improve a therapeutic time window for providing treatments to stroke patients and/or for enhancement of vaccine platforms are disclosed.