46006-95-5Relevant articles and documents
Development of Bisindole-Substituted Aminopyrazoles as Novel GSK-3β Inhibitors with Suppressive Effects against Microglial Inflammation and Oxidative Neurotoxicity
Liu, Jian-Guo,Zhao, Danfeng,Gong, Qi,Bao, Fengxia,Chen, Wen-Wen,Zhang, Haiyan,Xu, Ming-Hua
, p. 3398 - 3408 (2020/11/26)
Development of glycogen synthase kinase-3β (GSK-3β) inactivation-centric agents with polypharmacological profiles is increasingly recognized as a promising therapeutic strategy against the multifactorial etiopathology of Alzheimer's disease (AD). In this respect, a series of disubstituted aminopyrazole derivatives were designed and synthesized as a new class of GSK-3β inhibitors. Most of these derivatives possess GSK-3β inhibitory activities with IC50 values in the micromolar ranges, among which bisindole-substituted aminopyrazole derivative 6h displayed moderate GSK-3β inhibition (IC50 = 1.76 ± 0.19 μM), and alleviative effects against lipopolysaccharide (LPS)-induced glial inflammation in BV-2 cells and glutamate-induced oxidative neurotoxicity in HT-22 cells. Further in vivo studies indicated that compound 6h had potent anti-inflammatory effect, by showing markedly reduced microglial activation and astrocyte proliferation in the brain of LPS-injected mice. Overall, the simultaneous modulation of 6h on multiple dysfunctions of disease network highlights this structural distinctively bisindole-substituted aminopyrazole could be a useful prototype for the discovery of novel therapeutic agents to tackle AD and other GSK-3β associated complex neurological syndromes.
Facile in Vitro Biocatalytic Production of Diverse Tryptamines
McDonald, Allwin D.,Perkins, Lydia J.,Buller, Andrew R.
, p. 1939 - 1944 (2019/07/08)
Tryptamines are a medicinally important class of small molecules that serve as precursors to more complex, clinically used indole alkaloid natural products. Typically, tryptamine analogues are prepared from indoles through multistep synthetic routes. In the natural world, the desirable tryptamine synthon is produced in a single step by l-tryptophan decarboxylases (TDCs). However, no TDCs are known to combine high activity and substrate promiscuity, which might enable a practical biocatalytic route to tryptamine analogues. We have now identified the TDC from Ruminococcus gnavus as the first highly active and promiscuous member of this enzyme family. RgnTDC performs up to 96 000 turnovers and readily accommodates tryptophan analogues with substituents at the 4, 5, 6, and 7 positions, as well as alternative heterocycles, thus enabling the facile biocatalytic synthesis of >20 tryptamine analogues. We demonstrate the utility of this enzyme in a two-step biocatalytic sequence with an engineered tryptophan synthase to afford an efficient, cost-effective route to tryptamines from commercially available indole starting materials.
Electrooxidative cyclization of hydroquinolyl alcohols, hydroquinolylamines, and dimethyl aminomalonates
Okimoto, Mitsuhiro,Yoshida, Takashi,Hoshi, Masayuki,Hattori, Kazuyuki,Komata, Masashi,Numata, Kaori,Tomozawa, Kenta
, p. 236 - 242 (2008/02/11)
Several hydroquinolyl alcohols and amines were electrochemically oxidized in methanol in the presence of sodium methoxide and potassium iodide to afford the corresponding intramolecular cyclization products. Furthermore, several amino malonates were electrochemically oxidized to yield the corresponding heterocyclic compounds through an intramolecular carbon-carbon bond formation in the presence of sodium cyanide in methanol. CSIRO 2007.
