Abstract
Polyhydroxy 4-azaspiro[2.4]heptane derivatives (spirocyclopropyl iminosugars) were prepared in four to six steps from readily available protected aldoses. The key step of the reaction sequence involves a titanium-mediated aminocyclopropanation of glycononitriles with subsequent cyclization. Five new polyhydroxypyrrolidines so-obtained have been evaluated for their ability to inhibit 16 glycosidases. One of them exhibits selective inhibition of alpha-L-fucosidase from bovine kidney (Ki=1.6 microM, competitive).
Publication types
-
Research Support, Non-U.S. Gov't
MeSH terms
-
Animals
-
Cattle
-
Enzyme Inhibitors / chemical synthesis
-
Enzyme Inhibitors / chemistry
-
Enzyme Inhibitors / pharmacology*
-
Kidney / enzymology
-
Molecular Conformation
-
Pyrrolidines / chemical synthesis
-
Pyrrolidines / chemistry
-
Pyrrolidines / pharmacology*
-
Spiro Compounds / chemistry*
-
Stereoisomerism
-
Structure-Activity Relationship
-
alpha-L-Fucosidase / antagonists & inhibitors*
Substances
-
Enzyme Inhibitors
-
Pyrrolidines
-
Spiro Compounds
-
alpha-L-Fucosidase