Derivatives of relebactam, therapeutic methods of using the derivatives of relebactam, particularly in combination with β-lactam antibiotics and pharmaceutical compositions thereof are disclosed. The derivatives of relebactam are suitable for oral administration.
β-Lactamase inhibiting compounds, therapeutic methods of using the β-lactamase inhibiting compounds, particularly in combination with β-lactam antibiotics and pharmaceutical compositions thereof are disclosed. The β-lactamase inhibiting compounds are suitable for oral administration.
Disclosed herein are aztreonam derivatives, therapeutic methods of using the aztreonam derivatives, particularly in combination with β-lactamase inhibitors, and pharmaceutical compositions thereof. The aztreonam derivatives can be administered orally to provide orally bioavailable aztreonam.
A stereoselective, tandem [2+2] photocycloaddition–hydrolysis route to aldol-type adducts
作者:Manabu Abe、Masayuki Ikeda、Masatomo Nojima
DOI:10.1039/a805404e
日期:——
Photocycloadditions of aromatic aldehydes 2aâe with cyclic ketene silyl acetals 1aâe have been investigated. Regio- and exo-selective formation of the bicyclic 2-alkoxyoxetanes 3 was observed in high yields. Hydrolysis of the acid-labile oxetanes 3 with neutral water was efficiently achieved to give aldol-type adducts 4 (threo-selective formations).
Intramolecular Nucleophilic Acyl Substitution Reactions Mediated by XTi(O-<i>i</i>-Pr)<sub>3</sub> (X = Cl, O-<i>i</i>-Pr)/2<i>i-</i>PrMgBr Reagent. Efficient Synthesis of Functionalized Organotitanium Compounds from Unsaturated Compounds
作者:Sentaro Okamoto、Aleksandr Kasatkin、P. K. Zubaidha、Fumie Sato
DOI:10.1021/ja953497z
日期:1996.1.1
readily generated by the reaction of Ti(O-i-Pr)4 or ClTi(O-i-Pr)3 with 2i-PrMgX, resulted in an intramolecular nucleophilic acyl substitution (INAS) reaction to afford organotitanium compounds having a carbonyl functional group, in good to excellent yields. Thus, the treatment of alkyl alkynyl carbonates 2 or alkyl alkenyl carbonates 4 with 1 gave organotitanium compounds having a lactone and/or ester