The Synthesis of Deoxygalactostatin and 2,6-Imino-heptitol Derivatives via Stannane Mediated Hydroxymethylation of 5-Azido-1,4-lactones
作者:John P. Shilvock、George W. J. Fleet
DOI:10.1055/s-1998-1698
日期:1998.5
Deoxygalactostatin, homogalactonojirimycin derivatives and other 2,6-imino-heptitols are accessed via the nucleophilic addition of a hydroxymethyl anion equivalent to 5-azido-1,4-lactones to afford 6-azido-lactols. Subsequent hydrogenation induces intramolecular reductive amination to produce the desired piperidine ring systems.
Piperidine analogues of D-galactose as potent inhibitors of α-galactosidase: Synthesis by stannane-mediated hydroxymethylation of 5-azido-1,4-lactones. Structural relationships between D-galactosidase and L-rhamnosidase inhibitors
作者:John P. Shilvock、Robert J. Nash、Alison A. Watson、Ana L. Winters、Terry D. Butters、Raymond A. Dwek、David A. Winkler、George W. J. Fleet
DOI:10.1039/a904145a
日期:——
The syntheses of the polyhydroxylated piperidines deoxygalactonojirimycin 2, homogalactonojirimycins 7 and 9, and other 2,6-iminoheptitol derivatives, including an analogue of L-altropyranose, are reported. 5-Azidoaldono-1,4-lactones undergo chain extension to afford azido lactols by the addition of a hydroxymethyllithium species 18, generated by transmetallation of a protected stannylmethanol derivative 17. Hydrogenation results in azide reduction with subsequent intramolecular reductive amination to give piperidine ring systems. The deprotected iminogalactopyranose analogues are potent and selective α-galactosidase inhibitors. Observations on the structural features determining selectivity of inhibition of α-galactosidases over naringinase (L-rhamnosidase) are also reported.
TREATMENT OF LYSOSOMAL STORAGE DISORDERS AND OTHER PROTEOSTATIC DISEASES
申请人:De Moor Olivier
公开号:US20110237538A1
公开(公告)日:2011-09-29
Described are various compounds, in particular iminosugars, and methods for the treatment of proteostatic diseases, in particular lysosomal storage disorders. The compound may be a pharmacoperone of an enzyme selected from: (a) Acid alpha-glucosidase; (b) Acid beta-glucosidase; (c) glucocerebrosidase; (d) alpha-Galactosidase A; (e) Acid beta-galactosidase; (f) beta-Hexosaminidase A; (g) beta-Hexosaminidase B; (h) Acid sphingomyelinase; (i) Galactocerebrosidase; (j) Acid ceramidase; (k) Arylsulfatase A; (l) alpha-L-Iduronidase; (m) Iduronate-2-sulfatase; (n) Heparan N-sulfatase; (o) alpha-N-Acetylglucosaminidase; (p) Acetyl-CoA: alpha-glucosaminide N-acetyltransferase; (q) N-Acetylglucosamine-6-sulfate sulfatase; (r) N-Acetylgalactosamine-6-sulfate sulfatase; (s) Acid beta-galactosidase; (t) Arylsulfatase B; (u) beta-Glucuronidase; (v) Acid alpha-mannosidase; (w) Acid beta-mannosidase; (x) Acid alpha-L-fucosidase; (y) Sialidase; and (z) alpha-N-acetylgalactosaminidase.
Inhibition of naringinase (L-rhamnosidase) by piperidine analogues of L-rhamnose: Scaffolds for libraries incorporating trihydroxypipecolic acids
作者:John P. Shilvock、Joseph R. Wheatley、Benjamin Davis、Robert J. Nash、Rhodri C. Griffiths、M.George Jones、Matthias Müller、Sarah Crook、David J. Watkin、Colin Smith、Gurdyal S. Besra、Patrick J. Brennan、George W.J. Fleet
DOI:10.1016/0040-4039(96)01958-2
日期:1996.11
L-Deoxyrhamnojirimycin 1 does not inhibit naringinase significantly but 5-epi-L-deoxyrhamnojirimycin 2 is a potent inhibitor. Conversely, α-C-glycosides of 1 are good inhibitors of L-rhamnosidase whereas those of 2 are not. Intermediate azabicyclic lactones are likely to be of use for the incorporation of a number of trihydroxypipecolicacids into peptide libraries.