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Novel desosamine-modified 14- and 15-membered macrolides without antibacterial activity
Ivana Palej Jakopović1, Mirjana Bukvić Krajačić, Maja Matanović Skugor
1GlaxoSmithKline Research Centre Zagreb, Zagreb, Croatia.
Abstract:
Novel modifications of the desosamine sugar of 14- and 15-membered antibacterial macrolides, in which the desosamine was fused with N-substituted-1,3-oxazolidin-2-ones, were developed in order to completely suppress antibacterial activity and make them promising agents for other biological targets. The synthesis of such bicyclic desosamine derivatives, especially 1,3-oxazolidin-2-one formation, was optimized and conducted under mild conditions without a need for protection/deprotection steps for other functional groups. A focused series of novel desosamine-modified macrolide derivatives was prepared and their antibacterial activities tested. It was shown that these macrolide derivatives do not possess any residual antibacterial activity.
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