Entry to the 2,5-Epoxyimidazo[1,5-a][1,3]Diazocine and 5,8-Epoxy[1,2,3]Triazolo[1,5-a][1,3]Diazocine Systems : Novel Reversed Cyclonucleoside Analogues

5-Azido-5-deoxy-1,2-O-isopropylidene-α-D-xylofuranose was used to obtain two reversed nucleoside analogues with either the 5-aminoimidazol-4-carboxamide or 5-amino-1,2,3-triazol-4-carboxamide groups attached, through the N1 site, to the C5′ site of the sugar. When deprotected these two compounds cyc...

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Published in:Journal of carbohydrate chemistry 1999-01, Vol.18 (4), p.441-450
Main Authors: Ewing, D.F., Goethals, G., Mackenzie, G., Martin, P., Ronco, G., Vanbaelinghem, L., Villa, P.
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Language:English
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cited_by cdi_FETCH-LOGICAL-c344t-6655e1772b67ad189349293ac4c9af7cf0d987fddd9a6d3d3c98d4f09fd91d053
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container_title Journal of carbohydrate chemistry
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creator Ewing, D.F.
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description 5-Azido-5-deoxy-1,2-O-isopropylidene-α-D-xylofuranose was used to obtain two reversed nucleoside analogues with either the 5-aminoimidazol-4-carboxamide or 5-amino-1,2,3-triazol-4-carboxamide groups attached, through the N1 site, to the C5′ site of the sugar. When deprotected these two compounds cyclised spontaneously and regiospecifically to form a bond between the exocyclic nitrogen and the anomeric carbon of the sugar. These reversed cyclonucleoside analogues are respectively members of the 2,5-epoxyimidazo[1,5-a][1,3]diazocine and 5,8-epoxy[1,2,3]triazolo[1,5-a][1,3]diazocine systems, novel ring systems with therapeutic potential. The shape of the cyclised imidazole compound and its immediate precursor has been studied by molecular modelling.
doi_str_mv 10.1080/07328309908544008
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title Entry to the 2,5-Epoxyimidazo[1,5-a][1,3]Diazocine and 5,8-Epoxy[1,2,3]Triazolo[1,5-a][1,3]Diazocine Systems : Novel Reversed Cyclonucleoside Analogues
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