Studies on the reactivity of some<i>N</i>-aryl- and<i>N</i>-heteroaryl-<i>N'</i>-alkylthioureas towards electrophilic reagents. Synthesis of new<i>N</i>-pyridylthioureas and thiazolines maría
Here in we describe our findings about the behaviour of some N-aryl- and N-heteroaryl-N'-alkylthioureas towardselectrophilicreagents. In acid medium, the treatment of thioureas bearing aryl groups with 4-chloropyridine in 2-propanol yielded N-aryl-N-(4-pyridyl)-N'-alk;ylthioureas and N-aryl-N'-alkylureas, whereas the heteroarylthioureas tested under similar reaction conditions afforded N-heteroa
A 4-centre PDE 4 pharmacophore search has been carried out in several 3D-databases containing compounds belonging to different therapeutic areas. Losartan, an angiotensin-II antagonist, has been identified as a new lead compound for developping PDE 4 inhibitors. New families of compounds derived from losartan has been synthesized and their PDE inhibition has been measured. (C) 1998 Elsevier Science Ltd. All rights reserved.
Intramolecular oxidative cyclizations in heteroarylthioureas: A versatile pathway to bridgehead heterocyclic systems
作者:Ana Castro、Ana Martinez
DOI:10.1002/jhet.5570360427
日期:1999.7
Intramolecularoxidations in N-alkyl-N'-heteroarylthioureas represent a facile and versatile synthetic pathway to fused heterocyclicsystems including the bridgehead ones. This kind of heterocycles are the main feature in commom biologically active compounds.