130066-24-9Relevant academic research and scientific papers
Discovery of CDK5 Inhibitors through Structure-Guided Approach
Khair, Nishat Z.,Lenjisa, Jimma L.,Tadesse, Solomon,Kumarasiri, Malika,Basnet, Sunita K. C.,Mekonnen, Laychiluh B.,Li, Manjun,Diab, Sarah,Sykes, Matthew J.,Albrecht, Hugo,Milne, Robert,Wang, Shudong
supporting information, p. 786 - 791 (2019/05/17)
Specific abrogation of cyclin-dependent kinase 5 (CDK5) activity has been validated as a viable approach for the development of anticancer agents. However, no selective CDK5 inhibitor has been reported to date. Herein, a structure-based in silico screenin
The Use of Chloroformamidine Hydrochloride as a Reagent for the Synthesis of Guanidines from Electron Deficient Aromatic Amines
Armitage, Ian,Fu, Mingkun,Hicks, Frederick,Kattuboina, Adiseshu,Li, Jennifer S. N.,McCarron, Ashley,Zhu, Lei
, p. 728 - 734 (2017/02/05)
In efforts to optimize a manufacturing process for an internal development compound, a clean, efficient approach to guanidine synthesis using chloroformamidine hydrochloride was identified. To investigate the general utility of this methodology towards electron-deficient aromatic amines, a set of favorable conditions were developed from a series of screens, and the scope of the reaction was probed. The successful application of this chemistry to a variety of pyridines, anilines, and heterocyclic compounds highlights its use as an improved, alternative guanylation method for this often challenging set of aromatic amines.
One-Pot Evolution of Ageladine A through a Bio-Inspired Cascade towards Selective Modulators of Neuronal Differentiation
Iwata, Takayuki,Otsuka, Satoshi,Tsubokura, Kazuki,Kurbangalieva, Almira,Arai, Daisuke,Fukase, Koichi,Nakao, Yoichi,Tanaka, Katsunori
, p. 14707 - 14716 (2016/10/03)
A bio-inspired cascade reaction has been developed for the construction of the marine natural product ageladine A and a de novo array of its N1-substituted derivatives. This cascade features a 2-aminoimidazole formation that is modeled after an arginine post-translational modification and an aza-electrocyclization. It can be effectively carried out in a one-pot procedure from simple anilines or guanidines, leading to structural analogues of ageladine A that had been otherwise synthetically inaccessible. We found that some compounds out of this structurally novel library show a significant activity in modulating the neural differentiation. Namely, these compounds selectively activate or inhibit the differentiation of neural stem cells to neurons, while being negligible in the differentiation to astrocytes. This study represents a successful case in which the native biofunction of a natural product could be altered by structural modifications.
Direct guanylation of amino groups by cyanamide in water: Catalytic generation and activation of unsubstituted carbodiimide by scandium(iii) triflate
Tsubokura, Kazuki,Iwata, Takayuki,Taichi, Misako,Kurbangalieva, Almira,Fukase, Koichi,Nakao, Yoichi,Tanaka, Katsunori
, p. 1302 - 1306 (2014/06/10)
Guanylation proceeded efficiently upon treatment of the various amines with cyanamide in the presence of catalytic amounts of scandium(III) triflate under mild conditions. The method did not require the guanylation reagents to be preactivated, and the reaction proceeded efficiently in water. The method, therefore, has practical utility for substrates that dissolve only in aqueous solutions, for example, peptides or pharmacologically important compounds. Georg Thieme Verlag Stuttgart New York.
N-phenyl-4-pyrazolo[1,5-6]pyridazin-3-ylpyrimidin-2-amines as potent and selective inhibitors of glycogen synthase kinase 3 with good cellular efficacy
Tavares, Francis X.,Boucheron, Joyce A.,Dickerson, Scott H.,Griffin, Robert J.,Preugschat, Frank,Thomso, Stephen A.,Wang, Tony Y.,Zhouf, Hui-Qiang
, p. 4716 - 4730 (2007/10/03)
Glycogen synthase kinase 3 regulates glycogen synthase, the rate-determining enzyme for glycogen synthesis. Liver and muscle glycogen synthesis is defective in type 2 diabetics, resulting in elevated plasma glucose levels. Inhibition of GSK-3 could potentially be an effective method to control plasma glucose levels in type 2 diabetics. Structure-activity studies on a N-phenyl-4-pyrazolo[1,5-b]pyridazin-3-ylpyrimidin-2-amine series have led to the identification of potent and selective compounds with good cellular efficacy. Molecular modeling studies have given insights into the mode of binding of these inhibitors. Since the initial leads were also potent inhibitors of CDK-2/CDK-4, an extensive SAR was performed at various positions of the pyrazolo[1,5-b] pyridazin core to afford potent GSK-3 inhibitors that were highly selective over CDK-2. In addition, these inhibitors also exhibited very good cell efficacy and functional response. A representative example was shown to have good oral exposure levels, extending their utility in an in vivo setting. These inhibitors provide a viable lead series in the discovery of new therapies for the treatment of type 2 diabetes.
