[EN] NOVEL 6-O-SUBSTITUTED 15-MEMBERED 8A- AND 9A-LACTAMS<br/>[FR] NOUVEAUX 8A- ET 9A-LACTAMES À 15 CHAÎNONS 6-O-SUBSTITUÉS
申请人:GLAXOSMITHKLINE ZAGREB
公开号:WO2010015703A2
公开(公告)日:2010-02-11
The invention relates to novel anti-bacterial 15-membered 6-O-substituted-8a-aza-8a- homoerythromycin A and 6-O-substituted-9a-aza-9a-homoerythromycin A, their 6-O- substituted-3-O-decladinosyl-3-oxy and 6-O-substituted-3-O-decladinosyl-3-oxo compound of the general formula (I), wherein A represents NH; and B simultaneously represents -C(O)-, or A represents -C(O)- and B simultaneously represents NH; R4 represents: a straight or branched chain C3-C7 alkyl group containing a moiety selected from piperazin-1,4-yl, 2-methyl-piperazin-1,4-yl, 2-methyl-piperazin-1,4-yl-S(O)2, NH and N(CH3), or containing two NH moieties; wherein the second alkyl carbon atom is substituted by a hydroxy substituent, and the terminal carbon atom or heteroatom is substituted by phenyl (itself optionally substituted); or prop-2-enyl (i.e. allyl) optionally substituted by naphthyl or quinolinyl; or CH2-oxiranyl group; and R5 represents (a) dimethylamino [-N(CH3)2] or (b) dimethylamino-N-oxide [-N(O)(CH3)2] group.
Novel hybrids of 15-membered 8a- and 9a-azahomoerythromycin A ketolides and quinolones as potent antibacterials
作者:Dražen Pavlović、Andrea Fajdetić、Stjepan Mutak
DOI:10.1016/j.bmc.2010.10.024
日期:2010.12
well as fastidiousGram-negative pathogens. The best compounds in this series overcome all types of resistance in relevant clinical Gram-positive pathogens and display hitherto unprecedented in vitro activityagainst the constitutively MLSB-resistant strain of Staphylococcus aureus. In addition, they also represent an improvement over telithromycin (2) and cethromycin (3) againstfastidious Gram-negative
Synthesis and Structure−Activity Relationships of Novel 8a-Aza-8a-homoerythromycin A Ketolides
作者:Dražen Pavlović、Stjepan Mutak
DOI:10.1021/jm100711p
日期:2010.8.12
A series of novel 6-O-substituted 8a-aza-8a-homoerythromycin A ketolides was synthesized and evaluated for in vitro antibacterial activity. Key strategic elements of the synthesis include the base-induced E−Z isomerization of 3-O-descladinosyl-6-O-allylerythromycin A 9(E)-oxime followed by ring-expanding reaction of the resulting 9(Z)-oxime via Beckmann rearrangement. The ketolides showed potent activity