Abstract:
PROBLEM TO BE SOLVED: To provide new semi-synthesized macrolides having antibacterial activity, a pharmaceutical composition including these compounds, and a medical treatment method of remedy.SOLUTION: There is provided a 6-O-substituted erythromycin ketolide derivative expressed by formula (IV-A), where in formula, Rc is hydrogen or a hydroxy-protective group; R is a substituted methyl group; A, B, D and E are each selected from hydrogen, a 1-6C alkyl which may be substituted by a substituent, aryl, substituted aryl, heteroaryl, substituted heteroaryl, heterocycloalkyl, hydroxy, 1-6C alkoxy, and halogen of Br, Cl, F or I, or the like, under conditions that at least two of A, B, D and E are both hydrogen.
Abstract:
PROBLEM TO BE SOLVED: To provide a new semisynthesized macrolide having antibacterial activity.SOLUTION: The antibacterial compound having formula (II) or the like, and pharmaceutically acceptable salts, esters or prodrugs thereof, are provided. Pharmaceutical compositions each containing such a compound; methods for treating bacterial infections by administering such a compound; and a method for producing the compound; are also provided.
Abstract:
PROBLEM TO BE SOLVED: To provide antibacterial compounds. SOLUTION: Antibacterial compounds represented by formula (II), pharmaceutically acceptable salts, esters or prodrugs thereof, medicinal compositions including the same, methods for treating bacterial infections by administration of such compounds and a method for producing the compound are provided. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide novel semi-synthetic macrolides having antibacterial activity and pharmaceutical compositions containing these compounds and to provide medical methods for treating bacterial infection. SOLUTION: Antimicrobial compounds having formula (III) as well as pharmaceutically acceptable salts, esters or prodrugs thereof are provided herein. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a new antibacterial compound with enhanced activity. SOLUTION: Antibacterial compounds represented by formula (II) or the like, pharmaceutically acceptable salts, esters or prodrugs thereof, medicinal compositions including the same, treatment methods for bacterial infections by administration of such compounds and a method for producing the compound are provided. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a medicine for bacterial infection. SOLUTION: The invention relates to the compounds represented by formula (IV) in the specification. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a new class 6-O-substituted erythromycin derivative having increased acid stability to erythromycin A and 6-O-methylerythromycin A, and enhanced activity to gram-negative bacteria and macrolide-resisting gram-positive bacteria. SOLUTION: Provided are an antibacterial compound having structural formula (V) and the like as well as pharmaceutically permissible salts, esters or prodrugs thereof; pharmaceutical compositions comprising the compound; a therapeutic method of bacterial infection by administering the compound; and a production method of the compound. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
New ss-lactams of the general structure: (FORMULA) wherein R represents H or an acyl moiety known from the penicillin or cephalosporin art, R' is hydrogen, lower alkoxy, lower alkoxyalkyl, lower alkyl, phenylthio or lower alkylmercapto, R' is lower alkyl, the broken line represents an optional double bond, and acyloxymethyl esters thereof. All compounds are effective antibacterials.
Abstract:
Novel multicyclic erythromycin compounds and pharmaceutically acceptable salts and esters thereof having antibacterial activity having a formula selected from the group consisting of (I), (II), (III), (IV) and (V), compositions comprising a therapeutically eff ective amount of a compound of the invention in combination with a pharmaceutically acceptable carrier, as well as a method for treating bacterial infections by administering to a mammal a pharmaceutical composition containing a therapeutically effective amount of a compound of formulas (I)-(V).