Beta-lactamase inhibiting 7-alkyldiene cephalosporanic acid...

C - Chemistry – Metallurgy – 07 – D

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C07D 501/00 (2006.01) A61K 31/545 (2006.01) A61P 31/00 (2006.01)

Patent

CA 2371389

The invention provides compounds of formula (I) and (IV), wherein R1-R11 and A have any of the values defined in the specification, and their pharmaceutically acceptable salts, are useful for inhibiting .beta.-lactamase enzymes, for enhancing the activity of .beta.-lactam antibiotics, and for treating .beta.-lactam resistant bacterial infections in a mammal. The invention also provides pharmaceutical compositions, processes for preparing compounds of formula (I) and (IV), and novel intermediates useful for the synthesis of compounds of formula (I) and (IV).

La présente invention concerne des composés de formules (I) et (IV). Dans les formules, R1-R11 et A peuvent prendre n'importe quelle valeur parmi celles définies dans le descriptif. Ces composés ainsi que leurs sels pharmaceutiquement acceptables sont utiles pour inhiber les enzymes beta -lactamase, pour améliorer l'activité des bêta-lactamines, et pour traiter chez un mammifère les infections bactériennes résistant aux bêta-lactamines. La présente invention concerne également des compostions pharmaceutiques, des procédés de préparation de composés de formule (I) et (IV) et de nouveaux intermédiaires utiles pour effectuer la synthèse de composés de formules (I) et (IV).

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