Anhydrolide Macrolides. 2. Synthesis and Antibacterial Activity of 2,3-Anhydro-6-O-methyl 11,12-Carbazate Erythromycin A Analogues
摘要:
A series of 3-descladinosyl-2,3-anhydro-6-O-methylerythromycin A 11,12-cyclic carbazate analogues was prepared and evaluated for antibacterial activity. These 2,3-anhydro macrolides were found to be potent antibacterial agents in vitro against macrolide-susceptible organisms including Staphylococcus aureus 6538P, Streptococcus pyogenes EES61, and Streptococcus pneumoniae ATCC6303. These compounds were also very active against some organisms that show macrolide resistance (S. aureus A5177, S. pyogenes PIU2584, and S. pneumoniae 5649). The compounds generally showed poor activity against organisms with constitutive MLS resistance. Selected compounds were evaluated in vivo in mouse protection studies. Although most of the compounds tested in vivo showed poor efficacy, two compounds, 38 and 57, were more active than clarithromycin against S. pneumoniae ATCC6303.
[3 + 2] Cycloaddition of azides with arynes formed<i>via</i>C–H deprotonation of aryl sulfonium salts
作者:Xing-Wei Gu、Yan-Hua Zhao、Xiao-Feng Wu
DOI:10.1039/d3gc02052e
日期:——
Herein, we developed a new methodology of using aryl sulfonium salts as the aryne precursor for [3 + 2] cycloaddition reactions with azides. The reaction using readily available arenes as the feedstock features excellent atom economy, environmental friendliness and high functional group tolerance. Moreover, due to the excellent performance of the gram-scale reaction, deuterium labeling result and derivatization
[EN] 3-DESCLADINOSE-2,3-ANHYDROERYTHROMYCIN DERIVATIVES<br/>[FR] DERIVES DE LA 3-DESCLADINOSE-2,3-ANHYDRO-ERYTHROMYCINE
申请人:ABBOTT LABORATORIES
公开号:WO1997042205A1
公开(公告)日:1997-11-13
(EN) Novel 3-descladinose-2,3-anhydroerythromycin compounds and pharmaceutically acceptable salts and esters thereof having antibacterial activity selected from the group consisting of: (a) (I), (b) (II), (c) (III), and (d) (IV), pharmaceutical compositions comprising a therapeutically effective amount of a compound of formulas (I)-(IV) 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)-(IV) of the invention.(FR) L'invention concerne de nouveaux composés de la 3-descladinose-2,3-anhydro-érythromycine, leurs sels et leurs esters pharmaceutiquement acceptables, ayant une activité anti-bactérienne, choisis dans le groupe constitué de a) (I), b) (II), c) (III) et d) (IV); des compositions pharmaceutiques contenant une quantité thérapeutiquement efficace d'un composé de formule (I)-(IV) associé à un support pharmaceutiquement acceptable; ainsi qu'une méthode permettant de traiter les infections bactériennes en administrant à un mammifère une composition pharmaceutique contenant une quantité thérapeutiquement efficace d'un composé de formule (I)-(IV).