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
A compound of formula 1a
which is useful for treating reperfusion injury, and salts, prodrugs, and related compounds.
化合物1a的公式,对于治疗再灌注损伤是有用的,包括盐类、前药和相关化合物。
MONOMETHYLVALINE COMPOUNDS HAVING PHENYLALANINE SIDE-CHAIN MODIFICATIONS AT THE C-TERMINUS
申请人:Seattle Genetics, Inc.
公开号:US20130123465A1
公开(公告)日:2013-05-16
Auristatin peptide analogs of MeVal-Val-Dil-Dap-Phe (MMAF) are provided having C-terminal phenylalanine residue side chain replacements or modifications which are provided alone or attached to ligands through various linkers. The related conjugates can target specific cell types to provide therapeutic benefit.
Asymmetric Transfer Hydrogenative Amination of Benzylic Ketones Catalyzed by Cp*Ir(III) Complexes Bearing a Chiral <i>N</i>-(2-Picolyl)sulfonamidato Ligand
A convenient asymmetric reductive amination of benzylic ketones (α-arylated ketones) catalyzed by newly designed Cp*Ir complexes bearing a chiral N-(2-picolyl)sulfonamidato ligand was developed. Using readily available β-aminoalcohols as chiral aminating agents, a range of benzo-fused and acyclic ketones were successfully reduced with formic acid in methanol at 40 °C to afford amines with favorable