- Method for synthesis of desferrioxamine B, analogs and homologs thereof
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Synthesis of desferrioxamine B and analogs and homologs thereof beginning with O-protected, N-protected hydroxylamine, which is N-alkylated to produce a protected N-4-cyanoalkylhydroxylamine which is acylated with a suitable anhydride. The resulting half-
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- Synthesis and biological evaluation of hydroxamate-based iron chelators
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A new and versatile route to desferrioxamine B (DFO, 1) is described. Hydroxamate reagent 4 was elaborated in a series of high yield steps to the tert-butoxycarbonyl nitrile 11, which provided DFO in three transformations. The intermediate 11 could also be utilized in the preparation of DFO analogues which contain terminal N-acyl groups other than acetyl. The methodology was further employed in the syntheses of the DFO polyether analogues 2 and 3, beginning with the 3,6,9-trioxadecylation of N-(tert- butoxycarbonyl)-O-benzylhydroxylamine. Polyethers 2 and 3 are neutral molecules, which are somewhat more lipophilic than the parent DFO. Polyether hydroxamate 2 was shown to be nearly 3 times as effective as desferrioxamine at clearing iron in rats.
- Bergeron,Wiegand,McManis,Perumal
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p. 3182 - 3187
(2007/10/02)
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- THE TOTAL SYNTHESIS OF BISUCABERIN
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The first total synthesis of 6,17-dihydroxy-1,6,12,17-tetraazacyclodocosane-2,5,13,16-tetrone (bisucaberin) is presented.The synthetic scheme employed in this study illustrates the utility of O-benzyl-N-(tert-butoxycarbonyl)-N-(4-cyanobutyl)hydroxylamine
- Bergeron, R. J.,McManis, J. S.
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p. 4939 - 4944
(2007/10/02)
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