We report a chelation-assisted C–H arylation of various indoles with sterically and electronically diverse (hetero)arylsilanes enabled by cost-effective Cp*-free cobaltcatalysis. Key to the success of this strategy is the judicious choice of copper(II) fluoride as a bifunctional sliane activator and catalyst reoxidant. This methodology features a broad substrate scope and good functional group compatibility
Irreversible inhibitors of G12C mutant K-Ras protein are provided. Also disclosed are methods to modulate the activity of G12C mutant K-Ras protein and methods of treatment of disorders mediated by G12C mutant K-Ras protein.
The novel therapeutic strategy of vilazodone-donepezil chimeras as potent triple-target ligands for the potential treatment of Alzheimer's disease with comorbid depression
pharmacophores of the antidepressant vilazodone (5-HT1Areceptor partial agonist and serotonin transporter inhibitor) and the anti-AD drug donepezil (acetylcholinesterase inhibitor) together to develop a series of multi-target-directed ligands for potential therapy of the comorbidity of AD and depression. Accordingly, 55 vilazodone-donepezil chimeric derivatives were designed and synthesized, and their triple-target
抑郁症是阿尔茨海默病 (AD) 最常见的共病精神症状之一,迄今为止还没有专门为此目的批准的有效药物。在此,我们提出了一种新的治疗策略,将抗抑郁药维拉佐酮(5-HT 1A受体部分激动剂和5-羟色胺转运蛋白抑制剂)和抗AD药物多奈哌齐(乙酰胆碱酯酶抑制剂)的关键药效团结合在一起,开发了一系列多靶点。用于潜在治疗 AD 和抑郁症共病的定向配体。因此,设计并合成了 55 种维拉佐酮-多奈哌齐嵌合衍生物,以及它们对乙酰胆碱酯酶 5-HT 1A的三靶点活性。受体和血清素转运蛋白进行了系统评估。其中,化合物5在体外表现出很强的三靶点生物活性、低hERG钾通道抑制和可接受的脑分布。重要的是,口服 5 mg/kg 的化合物5二盐酸盐可显着减轻小鼠模型的抑郁症状并改善认知功能障碍。简而言之,这些结果突出了维拉佐酮-多奈哌齐嵌合体作为治疗 AD 和抑郁症合并症的前瞻性治疗方法。
Facile in Vitro Biocatalytic Production of Diverse Tryptamines
作者:Allwin D. McDonald、Lydia J. Perkins、Andrew R. Buller
DOI:10.1002/cbic.201900069
日期:2019.8
the product line: Tryptamines are important synthons in bioactive natural products, but general syntheticroutes to tryptamine analogues are limited. We present a highly active and promiscuous biosynthetic cascade using an engineered tryptophan synthase (TrpB) and native tryptophan decarboxylase (TDC) capable of producing a diverse set of tryptamines from readily accessible indoles.
introduces a Pd(II)/LA-catalyzed (LA: Lewis acid) decarboxylative addition reaction for the synthesis of bis(indolyl)methanederivatives. The presence of Lewis acid such as Sc(OTf)3 triggered Pd(II)-catalyzed decarboxylative addition of propiolic acids with indoles to offer the bis(indolyl)methanederivatives in moderate to good yields, whereas neither Pd(II) nor Lewis acid alone was active for this synthesis