The present invention provides a new imidazole derivative represented by the following formula or a pharmaceutically acceptable salt thereof which exhibits potent antimicrobial activity based on a LpxC-inhibiting action against gram-negative bacteria such as Pseudomonas aeruginosa, Escherichia coli, and Klebsiella pneumoniae, and their drug-resistant strains.
A convenient reagent for aldehyde to alkyne homologation
作者:Douglass F. Taber、Sha Bai、Peng-fei Guo
DOI:10.1016/j.tetlet.2008.09.114
日期:2008.11
A convenient reagent for the one-carbon homologation of an aldehyde to the corresponding alkyne is reported. This reagent allows this conversion to conveniently be carried out on a large scale under ambient conditions. (c) 2008 Elsevier Ltd. All rights reserved.
EP3884940
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An Expedient Asymmetric Synthesis of N-Protected (S,S)-2-Aminomethyl-1-cyclopropanecarboxylic Acid
An enantioselective synthesis of a N-Boc-protected trans-cyclopropane γ-amino acid is reported. The key chiral aldehyde intermediate is prepared in enantiomerically pure form using a three-step aldol-cyclopropanation-retro-aldol protocol.