One-Step Diastereoselective Pyrrolidine Synthesis Using a Sulfinamide Annulating Reagent
作者:Qing Shi、Nathaniel S. Greenwood、Mariah C. Meehan、Hyunsoo Park、Michael Galella、Bhupinder Sandhu、Purnima Khandelwal、John R. Coombs、William P. Gallagher、Carlos A. Guerrero、John Hynes、T. G. Murali Dhar、Francisco Gonzalez Bobes、David Marcoux
DOI:10.1021/acs.orglett.9b03560
日期:2019.11.15
highlights the use of chiral sulfinamides as nitrogen nucleophiles in intermolecular aza-Michael reactions. When chiral sulfinamides are coupled to a chloroethyl group, the corresponding novel annulating reagents can be used to streamline the stereoselective synthesis of complex pyrrolidine-containing molecules. As a result, it has enabled a medicinal chemistry campaign for the synthesis of biologically
作者:Assem Barakat、Abdullah Mohammed Al-Majid、Saied M. Soliman、Mohammad Shahidul Islam、Hussain Mansur Ghawas、Sammer Yousuf、M. Iqbal Choudhary、Abdul Wadood
DOI:10.1016/j.molstruc.2017.04.017
日期:2017.8
derivatives are privileged structures with a broad range of pharmaceutical applications. We prepared a series of 5-monoalkylated barbiturate derivatives ( 3a – l ) and evaluated, in vitro , their antioxidant (DPPH assay), and α-glucosidase inhibitory activities. Compounds 3a – l were synthesized via Michael addition. The structure of compound 3k was determined using X-ray single-crystal diffraction
Substituted tetrahydronaphthaline and analogous compounds
申请人:Bayer Aktiengellschaft
公开号:US06586613B1
公开(公告)日:2003-07-01
Substituted tetrahydro-naphthalenes and analogous compounds are prepared by reducing or condensing appropriate functional substituents in substituted tetrahydro-naphthalenes and analogous compounds by customary methods and converting functional groups in this manner into the desired groups. The compounds according to the invention are suitable for use as active compounds in pharmaceuticals, in particular in pharmaceuticals for treating arteriosclerosis and also dyslipidaemias.
Synthesis of novel 5-monoalkylbarbiturate derivatives: new access to 1,2-oxazepines
作者:Assem Barakat、Mohammad Shahidul Islam、Abdullah M. Al-Majid、Saied M. Soliman、Yahia N. Mabkhot、Zeid Abdullah Al-Othman、Hazem A. Ghabbour、Hoong-Kun Fun
DOI:10.1016/j.tetlet.2015.10.108
日期:2015.12
A simple and straightforward route to 5-monoalkylbarbiturates by the NHEt2 catalyzed Michael reaction of 1,3-dimethylbarbituric acid and alpha,beta-unsaturated ketones is described. Significantly, the reaction exclusively furnished 5-monoalkylbarbiturates. Under neat conditions, the mixing and grinding of a representative 1,5-diketone and hydroxylamine hydrochloride gave the corresponding 1,2-oxazepine in very good yield. (C) 2015 Elsevier Ltd. All rights reserved.