Chemoselective Synthesis of Carbamates using CO<sub>2</sub>as Carbon Source
作者:Daniel Riemer、Pradipbhai Hirapara、Shoubhik Das
DOI:10.1002/cssc.201600521
日期:2016.8.9
Synthesis of carbamates directly from amines using CO2 as the carbon source is a straightforward and sustainable approach. Herein, we describe a highly effective and chemoselective methodology for the synthesis of carbamates at room temperature and atmospheric pressure. This methodology can also be applied to protect the amino group in amino acids and peptides, and also to synthesize important pharmaceuticals
Identification of a novel class of autotaxin inhibitors through cross-screening
作者:Diana Castagna、Emma L. Duffy、Dima Semaan、Louise C. Young、John M. Pritchard、Simon J. F. Macdonald、David C. Budd、Craig Jamieson、Allan J. B. Watson
DOI:10.1039/c5md00081e
日期:——
Starting from the known LPA1antagonist4, three novel series of autotaxin inhibitors exemplified by7,8and9were identified using a combination of scaffold hopping and ligand-based design.
A highlyefficient method of visible light mediated Ni(II)-catalyzed photoredox N-arylation of Cbz-amines/Boc-amines with aryl electrophiles at room temperature is reported. The methodology provides a common access to a wide variety of N-aromatic and N-heteroaromatic carbamate products that find use in the synthesis of several biologically active molecules and provides a distinct advantage over traditional
Monoacylglycerol lipase (MAGL) has an essential role in the catabolic pathway of the endocannabinoid 2-arachidonoylglycerol, which makes it a potential target for highly specific inhibitors for the treatment of a number of diseases. We designed and synthesized a series of carbamate analogues of URB602. We evaluated their inhibitory activity toward human MAGL in vitro both in cell culture and lysates. The target compounds exhibited moderate to excellent inhibitory activity against MAGL. The most promising compound 2b showed good inhibitory activity with IC50 value of 4.5 +/- 0.70 mu M reducing MAGL activity to 82% of controls at 10 mu M compared to 66% for the parent compound URB602. Interestingly, compounds 2b and 2c induce cell death through the inhibition of MAGL. Molecular modelling approaches and docking studies, used to investigate inhibitory profiles, indicated that trifluoromethyl substitutions of the aryl group and the benzene ring present at the oxygen side of the carbamate molecule had a significant impact on the activity. (C) 2018 Elsevier Ltd. All rights reserved.
Lipid peroxidation inhibition study: A promising case of 1,3-di([1,1′-biphenyl]-3-yl)urea
(structural analogue to 18). The computations indicated that the most favorable mechanisms are hydrogen atom transfer from the hydroxyl group in meta-position of the benzamide fragment in nonpolar medium, and protontransfer from the hydroxyl group in ortho-position of the benzamide fragment in nonpolar medium.