Identification of dihydropyridines that reduce cellular tau levels
作者:Christopher G. Evans、Umesh K. Jinwal、Leah N. Makley、Chad A. Dickey、Jason E. Gestwicki
DOI:10.1039/c0cc02253e
日期:——
A series of dihydropyridines were identified that have an effect on the accumulation of tau, an important target in Alzheimer's disease. The dihydropyridine collection was expanded using the Hantzsch multicomponent reaction to develop preliminary structure–activity relationships.
Catalyst-free efficient synthesis of polyhydroquinolines using polyethylene glycol as a solvent and evaluation of their cytotoxicity
作者:Humani Paidepala、Siddavatam Nagendra、Venkateswarlu Saddanappu、Anthony Addlagatta、Biswanath Das
DOI:10.1007/s00044-013-0706-1
日期:2014.2
AbstractAn eco-friendly one-pot synthesis of polyhydroquinolines by four-component coupling of aldehydes, dimedone, ethylacetoacetate, and ammonium acetate using polyethyleneglycol as a solvent at room temperature has been accomplished. The conversion was complete within 2–4 h, and the products were formed in high yields (83–95 %). No any additional catalyst was required. Several known and unknown
Abstract Chitosan, a biodegradablegreencatalyst, was found to be an impressive system for one-pot four-component reaction of different aldehydes, dimedone, β‐ketoesters or acetoacetanilide, and ammonium acetate leading to 1,4-dihydropyridine derivatives via Hantzsch-type condensation under solvent-free condition. This methodology produces diverse superiorities such as operational simplicity, short
Novel SO<sub>3</sub>H-Functionalized Ionic Liquids - Catalyzed Facile and Efficient Synthesis of Polyhydroquinoline Derivatives via Hantzsch Condensation under Ultrasound Irradiation
作者:Bai Lin Li、Ai Guo Zhong、An Guo Ying
DOI:10.1002/jhet.2070
日期:2015.3
A facile and efficient synthesis of polyhydroquinolines has been developed via four‐component condensation reactions of aldehydes, dimedone, ethyl acetoacetate, and ammoniumacetate in the presence of Novel SO3H‐functionalized ionic liquid catalysts through Hantzsch reaction under ultrasound irradiation without solvent. Simple work‐up procedure, environmentally friendly, inexpensive, and non‐toxic
Addressed herein, highly monodisperse PdRuNi nanoparticles furnished with graphene oxide (PdRuNi@GO NPs) have been prepared as novel, stable, highly efficient and exceptional reusable heterogeneous catalyst for 1,4-Dihydropyridine synthesis via multicomponent...
本文解决了配备氧化石墨烯(PdRuNi @ GO NPs)的高度单分散的PdRuNi纳米颗粒,它是新颖,稳定,高效且优异的可重复使用的多相催化剂,用于通过多组分合成1,4-二氢吡啶。