[EN] PYRIMIDINE DERIVATIVES FOR THE TREATMENT OF ASTHMA, COPD, ALLERGIC RHINITIS, ALLERGIC CONJUNCTIVITIS, ATOPIC DERMATITIS, CANCER, HEPATITIS B, HEPATITIS C, HIV, HPV, BACTERIAL INFECTIONS AND DERMATOSIS [FR] DÉRIVÉS DE PYRIMIDINE POUR LE TRAITEMENT DE L'ASTHME, DE LA BRONCHO-PNEUMOPATHIE CHRONIQUE OBSTRUCTIVE (COPD), DE LA RHINITE ALLERGIQUE, DE LA CONJONCTIVITE ALLERGIQUE, DE LA DERMATITE ATOPIQUE, DU CANCER, DE L'HÉPATITE B, DE L'HÉPATITE C, DU VIH, DU
Formation of Enantiopure 5-Substituted Oxazolidinones through Enzyme-Catalysed Kinetic Resolution of Epoxides
作者:Maja Majerić Elenkov、Lixia Tang、Auke Meetsma、Bernhard Hauer、Dick B. Janssen
DOI:10.1021/ol800698t
日期:2008.6.1
Halohydrin dehalogenase from Agrobacterium radiobacter catalyzed the enantioselective ring opening of terminal epoxides with cyanate as a nucleophile, yielding 5-substituted oxazolidinones in high yields and with high enantiopurity (69-98% ee). This is the first example of the biocatalytic conversion of a range of epoxides to the corresponding oxazolidinones.
[EN] PYRIMIDINE DERIVATIVES FOR THE TREATMENT OF ASTHMA, COPD, ALLERGIC RHINITIS, ALLERGIC CONJUNCTIVITIS, ATOPIC DERMATITIS, CANCER, HEPATITIS B, HEPATITIS C, HIV, HPV, BACTERIAL INFECTIONS AND DERMATOSIS<br/>[FR] DÉRIVÉS DE PYRIMIDINE POUR LE TRAITEMENT DE L'ASTHME, DE LA BRONCHO-PNEUMOPATHIE CHRONIQUE OBSTRUCTIVE (COPD), DE LA RHINITE ALLERGIQUE, DE LA CONJONCTIVITE ALLERGIQUE, DE LA DERMATITE ATOPIQUE, DU CANCER, DE L'HÉPATITE B, DE L'HÉPATITE C, DU VIH, DU
申请人:ASTRAZENECA AB
公开号:WO2009067081A1
公开(公告)日:2009-05-28
The present invention provides compounds of formula (I) wherein R 1, R2, R3 and R4 are as defined in the specification, and pharmaceutically acceptable salts thereof, as well as processes for their preparation, pharmaceutical compositions containing them and their use in therapy.
A venerable scaffold for asymmetric synthesis and drug development, chiral 5-substituted oxazolidinones are obtained in almost enantiomerically pure form (up to 99.9% ee) starting fromracemicterminalepoxides. The salient features of this process include the very simple and convenient experimental protocol and the employment of a readily accessible catalyst and inexpensive, easily handled starting