摘要:
The spiramycin analogue, 2'-acetyl-4"'-de-N-methyl-4"-O-t-butyldimethylsilylspiramycin I 3,18-(O-t-butyldimethylsilyl)acetal(1), was found to be an adequate antibacterial agent against MRSA strains. An acetylenic sidechain was attached to 1 producing the analog (8), with the core intact but displaying a tethered terminal alkyne, ready for reaction with 19 diverse azides. In the event, the copper-catalyzed Fokin-Huisgen triazole synthesis/coupling gave each of the nineteen new 4"-O-acyl triazole derivatives of 1 in good to nearly quantitative isolated yields.