ENANTIOSELECTIVE SYNTHESIS OF DIHYDROPYRIMIDINONES AND HEXAHYDROPYRIMIDINONES
申请人:Universitat de les Illes Balears
公开号:EP3260446A1
公开(公告)日:2017-12-27
The present invention provides with a "one pot" easily scalable preparation process, or method to obtain enantiomerically enriched dihydropyrimidinones (DHPMs), in high yield and high enantiomeric purity, based on the concept of organocatalysis by a network of cooperative hydrogen bonds (NCHB). Said preparation process obtains enantiomerically enriched DHPMs without the use of metal-based catalysis and with the possibility of the recovery of the chiral organocatalyst comprising a NCHB used. The present invention also provides with new enantiomerically and diastereomerically enriched hexahydropyrimidinones (HHPMs), as well as a preparation process to obtain them also based on the concept of organocatalysis by a NCHB. Said preparation process obtains enantiomerically and diastereomerically enriched HHPMs without the use of metal-based catalysis and with the possibility of the recovery of the chiral organocatalyst comprising a NCHB used.
[EN] NOVEL 2-OXO-1,2,3,4-TETRAHYDROPYRIMIDINES, BICYCLIC PYRIMIDINE DIONES AND IMIDAZOLIDINE-2,4-DIONES USEFUL AS INDUCIBLE NITRIC OXIDE SYNTHASE INHIBITORS<br/>[FR] NOUVELLES 2-OXO-1,2,3,4-TÉTRAHYDROPYRIMIDINES, PYRIMIDINE DIONES BICYCLIQUES ET IMIDAZOLIDINE-2,4-DIONES UTILES COMME INHIBITEURS DE L'OXYDE NITRIQUE SYNTHASE INDUCTIBLE
申请人:KALYPSYS INC
公开号:WO2007101213A2
公开(公告)日:2007-09-07
[EN] The present invention relates to novel 2-oxo-l,2,3,4-tetrahydropyrimidines, bicyclic pyrimidine diones and imidizolidine-2,4-diones and methods useful as inhibitors of nitric oxide synthase. [FR] La présente invention concerne de nouvelles 2-oxo-1,2,3,4-tétrahydropyrimidines, pyrimidine diones bicycliques et imidizolidine-2,4-diones et des procédés, utiles comme inhibiteurs de l'oxyde nitrique synthase.
Synthesis and Suzuki–Miyaura reactions of 5-halo-3,4-dihydropyrimidin-2(1H)-ones
作者:Andrew J. Zych、Hong-Jun Wang、Samuel A. Sakwa
DOI:10.1016/j.tetlet.2010.07.093
日期:2010.9
6-methyl-4-phenyl-5-halo-3,4-dihydropyrimidin-2(1H)-ones via the Suzuki–Miyaura reaction is reported. These previously unknown heterocyclic halides are easily prepared using the Biginelli multicomponent reaction followed by halodecarboxylation. The effect of varied substitution at the C-4 position on the cross-coupling reaction is also examined.