125279-81-4Relevant articles and documents
Design, synthesis, and antibacterial evaluation of novel derivatives of NPS-2143 for the treatment of methicillin-resistant S. aureus (MRSA) infection
Chen, Yao,Ju, Yuan,Li, Chungen,Yang, Tao,Deng, Yong,Luo, Youfu
, p. 545 - 554 (2019/04/10)
Methicillin-resistant Staphylococcus aureus (MRSA) infections are a significant global health challenge due to the emergence of strains exhibiting resistance to nearly all classes of antibiotics. This necessitates the rapid development of novel antimicrobials to circumvent this critical problem. Screening of compounds based on phenotypes is one of the major strategies for finding new antibiotics at present. Hence, we here performed a phenotypic screening against MRSA and identified NPS-2143 exhibiting activity against MRSA with an MIC value of 16 μg ml?1. In order to discover more potent anti-MRSA agents, a series of derivatives of NPS-2143 were designed and synthesized. The most promising compounds 48 and 49 exhibited favorable antimicrobial activity with an MIC value of 2 μg ml?1.
Bacillus alcalophilus MTCC10234 catalyzed enantioselective kinetic resolution of aryl glycidyl ethers
Bala, Neeraj,Chimni, Swapandeep Singh,Saini, Harvinder Singh,Chadha, Bhupinder Singh
experimental part, p. 128 - 134 (2010/10/04)
The phenyl glycidyl ether derivatives have been kinetically resolved with the growing cells of Bacillus alcalophilus MTCC10234 yielding (S)-epoxides with up to >99% ee and (R)-diols with up to 89% ee. The enantiomeric ratio (E) of up to 67 has been obtained for biohydrolysis process. The effect of different substituents of phenyl glycidyl ether on the biocatalytic efficiency of B. alcalophilus MTCC10234 showed preference for methyl- and chloro-substituted aryl glycidyl ether derivatives whereas nitro-derivatives were transformed at a slower rate. 2,6-Dimethylphenyl glycidyl ether which contains a bulky aryl group having methyl group on both the ortho positions was resolved with an E=39.
Nitrite-mediated hydrolysis of epoxides catalyzed by halohydrin dehalogenase from Agrobacterium radiobacter AD1: A new tool for the kinetic resolution of epoxides
Hasnaoui, Ghannia,Lutje Spelberg, Jeffrey H.,De Vries, Erik,Tang, Lixia,Hauer, Bernhard,Janssen, Dick B.
, p. 1685 - 1692 (2007/10/03)
Halohydrin dehalogenase obtained from Agrobacterium radiobacter AD1, has been tested for the nitrite-mediated ring opening of epoxides. This reaction mainly leads to the formation of unstable hydroxynitrite ester intermediates, which can be further hydrolyzed to the corresponding diols. This conversion proceeds with high enantioselectivity and high regioselectivity towards styrene oxide derivatives. It has been concluded that halohydrin dehalogenase can serve as an attractive alternative to epoxide hydrolases in the preparation of enantiopure epoxides by kinetic resolution.