Synthesis of 3-alkyl-2-benzamido-4-hydroxy-2-butenoic acid .gamma.-lactones from alkyl cuprates. Attempted transformation to 2,3-diaminocarboxylic acids by hydrogenation and Curtius rearrangement
New Synthesis of Aryl and Heteroaryl N-Acylureas via Microwave-Assisted Palladium-Catalysed Carbonylation
作者:David Liptrot、Lilian Alcaraz、Bryan Roberts
DOI:10.1002/adsc.201000395
日期:2010.9.10
practical synthesis of aryl and heteroaryl N‐acylureas has been developed via palladium‐catalysed carbonylation of aryl or heteroaryl halides in the presence of urea nucleophiles. A range of reactions illustrating the wide scope of this reaction was carried out under microwave irradiation, using either carbonmonoxide gas in a vessel equipped with a gas inlet adapter, or molybdenumhexacarbonyl as the
[EN] NITROGEN-CONTAINING HETEROCYCLIC COMPOUND<br/>[FR] COMPOSÉ HÉTÉROCYCLIQUE CONTENANT DE L'AZOTE
申请人:TAKEDA PHARMACEUTICAL
公开号:WO2013018929A1
公开(公告)日:2013-02-07
The present invention provides a novel compound having a superior activity as an ERR-α modulator and useful as an agent for the prophylaxis or treatment of ERR-α associated diseases. The present invention relates to a compound represented by the formula (1) wherein each symbol is as defined in the specification, or a salt thereof.
Arylmethyl- and cyclohexenylmethyl- penicillins, substituted on the .alpha.carbon atom of the side chain by a 2,3-disubstituted imidazolidinylcarbamido or a 2,3-disubstituted imidazolidinylthiocarbamido group, or by the corresponding 2,3-disubstituted 1,3-diazacyclohexylcarbamido or thiocarbamido groups are anti-bacterial agents.
mechanism of biotin-dependent carboxylation reactions, the following model experiments have been carried out. In reactions of carbonate derivatives such as methyl chloroformate with 2-ethoxy-2-imidazoline (1), a putative enolic biotin model, or 2-imidazolidinone (2), the former showed a much higher reactivity to provide the methoxycarbonylated 1 (3). Reactions of 3 with benzenethiolate, cyclohexylamine
It is found that 1-methoxycarbonyl- or 1-phenoxycarbonyl-2-imidazolidone reacts with phenylmagnesiumbromide to afford benzophenone and triphenylmethanol, together with 2-imidazolidone, by nucleophilic attack on the carbonyl group at the side chain.