Methods of synthesizing pharmacologically useful oxazolidinones are disclosed, and, in particular, a method of manufacturing a 5-(tert-butylcarbamoyl)-aminomethyl-oxazolidinone by condensing a carbamate with a tert-butylcarbamoyl protected derivative of glycidylamine or 3-amino-1-halopropanol.
Kinetics and Mechanistic Investigation of Ru(III) Catalyzed Oxidative Degradation of Linezolid by Permanganate at Environmentally Relevant pH
作者:Vijaykumar S. Bhamare、Raviraj M. Kulkarni
DOI:10.14233/ajchem.2019.21583
日期:——
The influences of [permanganate], [linezolid], [Ru3+], pH, temperature, ionic strength, solvent polarity, etc. on the rates of uncatalyzed and Ru3+ catalyzed oxidative degradation of linezolid by Mn7+ were investigated at environmentally relevant pH. The increase in [permanganate], [linezolid] and temperature increases the rates of uncatalyzed and catalyzed reactions. It is observed from the calculated pH dependent second order constants that the rate of reaction decreases with increase in pH from 3.0 to 9.0. The values of apparent second order rate constants are 12 times faster in the presence of Ru3+. Four degraded products of linezolid were identified with the help of HR-MS data. Based on kinetic and HR-MS data, a plausible catalytic mechanism was proposed. In this mechanism, Ru3+ acts as an electron shuttle and was oxidized by Mn7+ to the higher oxidation states of ruthenium such as Ru6+ and Ru7+. Activation parameters were determined and discussed.
The present invention relates to compounds of the Formula (I) that are useful antimicrobial agents and effective against a variety of multi-drug resistant bacteria:
本发明涉及公式(I)化合物,其是有用的抗微生物剂,并且对多种多药耐药细菌具有有效性。
Process for preparing optically active oxazolidinone derivative
申请人:Takasago International Corporation
公开号:EP1008590A1
公开(公告)日:2000-06-14
A process for preparing an optically active oxazolidinone derivative
comprises allowing hydrazine to react on an optically active ester having a hydroxyl group at the 3-position which is represented by formula (II):
wherein R1 represents a lower alkyl group having 1 to 4 carbon atoms, a phenyl group, a methoxymethyl group, a benzyloxymethyl group, a benzyloxycarbonylaminomethyl group which may have a substituent or substituents on the benzene ring thereof, an acylaminomethyl group having 3 to 10 carbon atoms, or an alkyloxycarbonylaminomethyl group having 3 to 6 carbon atoms; R2 and R3, which may be the same or different, each represent a hydrogen atom, a lower alkyl group having 1 to 4 carbon atoms, a phenyl group, an acetylaminomethyl group, a benzoylaminomethyl group, or a benzyl group; and * indicates an asymmetric carbon atom,
and subjecting the resulting hydrazide to Curtius rearrangement.