AbstractDurch Einwirkung von Thionylchlorid auf die Enolacetate und Enol‐methyläther einiger α‐Ketosäuren wurden die entsprechenden Säurechloride dargestellt.
Enantioselective Hydrogenation of α-Aryloxy and α-Alkoxy α,β-Unsaturated Carboxylic Acids Catalyzed by Chiral Spiro Iridium/Phosphino-Oxazoline Complexes
The iridium-catalyzed highly enantioselectivehydrogenation of alpha-aryloxy and alpha-alkoxy-substituted alpha,beta-unsaturated carboxylic acids was developed. By using chiral spiro phosphino-oxazoline ligands, the hydrogenation proceeded smoothly to produce various alpha-aryloxy- and alpha-alkoxy-substituted carboxylic acids with extremely high enantioselectivities (ee up to 99.8%) and reactivities
A new metallo-β-lactamase inhibitor which acts as a medicament for inhibiting the inactivation of β-lactam antibiotics and recovering anti-bacterial activities is disclosed. The maleic acid derivatives having the general formula (I) have metallo-β-lactamase inhibiting activities. It is possible to recover the anti-bacterial activities of β-lactam antibiotics against metallo-β-lactamase producing bacteria by combining the compound of the general formula (I) with β-lactam antibiotics.
A new metallo-β-lactamase inhibitor which acts as a medicament for inhibiting the inactivation of β-lactam antibiotics and recovering anti-bacterial activities is disclosed. The maleic acid derivatives having the general formula (I) have metallo-β-lactamase inhibiting activities. It is possible to recover the anti-bacterial activities of β-lactam antibiotics against metallo-β-lactamase producing bacteria by combining the compound of the general formula (I) with β-lactam antibiotics.
Einige Reaktionen an Derivaten von ?-Ketos�uren und ?-Ketos�ureestern
作者:P. Seifert、E. Vogel、A. Rossi、H. Schinz
DOI:10.1002/hlca.19500330338
日期:——
AbstractDurch Einwirkung von Thionylchlorid auf die Enolacetate und Enol‐methyläther einiger α‐Ketosäuren wurden die entsprechenden Säurechloride dargestellt.