A Morita-Baylis-Hillman based route to C-5a-chain-extended 4-epi-isofagomine type glycosidase inhibitors

Autor: René Lebl, Bettina M. Pabst, Marion Tschernutter, Stephen G. Withers, Arnold E. Stütz, Patrick Weber, Eduard Paschke, Michael Schalli, Werner Windischhofer, Martin Thonhofer, Christina Tysoe
Rok vydání: 2017
Předmět:
Zdroj: Carbohydrate Research. 442:31-40
ISSN: 0008-6215
Popis: By Morita-Baylis-Hillman reaction of 2,3-O-isopropylidene-D-glyceraldehyde with α,β-unsaturated carbonyl as well as hetero analogous carbonyl compounds such as acrylonitrile, suitable precursors of isofagomine and of 4-epi-isofagomine are available. Elaboration of the structures by amine introduction, followed by intramolecular ring closure and subsequent hydroboration of the double bond provides 4-epi-isofagomine derivatives featuring chain extensions at C-5a which are determined by the structures of the carbonyl compounds employed. As an example, the synthesis of C-(5aR)- and C-(5aS)-5a-C-pentyl-4-epi-isofagomines, powerful inhibitors of β-galactosidases, is outlined. In line with reported data, the (C-5aR) epimer was found a highly potent experimental pharmacological chaperone for GM1-associated human lysosomal β-galactosidase mutant R201C.
Databáze: OpenAIRE