Synthesis of cyclopentane spirohydantoins by aldol cyclisations: An approach to highly substituted α-cyclopentane amino acids
作者:Antony J. Fairbanks、Russell P. Elliott、Colin Smith、Andrew Hui、Gemma Way、Richard Storer、Helen Taylor、David J. Watkin、Bryan G. Winchester、George W.J. Fleet
DOI:10.1016/s0040-4039(00)61521-6
日期:1993.12
reversible aldol condensations of 2-azido-5-formyl-1,5-lactones provide short routes to precursors for α-cyclopentane amino acids, some aminopseudosugars and spirohydantoins of cyclopentanes with control of the stereochemistry at all 5 carbons bearing functional groups. The effects of some of the compounds on human liver-glycosidases are described.
Polyhydroxylated cyclohexane and cyclopentane α-amino acids from cyclisations of an azidolactone
作者:Antony J. Fairbanks、Andrew Hui、Ben M. Skead、Paul M.de Q. Lilley、R.Brian Lamont、Richard Storer、John Saunders、David J. Watkin、George W.J. Fleet
DOI:10.1016/s0040-4039(00)78527-3
日期:1994.11
Short routes to tetrahydroxylated cyclohexane and cyclopentane alpha-amino acids with control of the stereochemistry at all 5 carbons bearing functional groups are described from an azidolactone.
Synthesis of an eight carbon homologue of α-homomannojirimycin via a bicyclic aminolactone
作者:John P. Shilvock、Kenneth Y. Hsia、Robert J. Nash、Janet D. Lloyd、Ana L. Winters、Naoki Asano、George W.J. Fleet
DOI:10.1016/s0957-4166(98)00440-6
日期:1998.12
A thermally induced intramolecular 1,3-dipolar cycloaddition of an azidoester and subsequent sodium cyanoborohydride reduction of the resulting bicyclic vinylogous urethane to give a bicyclic aminolactone allows access to an eight carbon homologue of α-homomannojirimycin which is a weak fucosidase inhibitor. Intermediates with both an α- and β-amino acid moiety are described and may be useful for incorporation