209787-64-4Relevant academic research and scientific papers
(5aR)-5a-C-Pentyl-4-epi-isofagomine: A powerful inhibitor of lysosomal β-galactosidase and a remarkable chaperone for mutations associated with GM1-gangliosidosis and Morquio disease type B
Front, Sophie,Biela-Bana?, Anna,Burda, Patricie,Ballhausen, Diana,Higaki, Katsumi,Caciotti, Anna,Morrone, Amelia,Charollais-Thoenig, Julie,Gallienne, Estelle,Demotz, Stéphane,Martin, Olivier R.
, p. 160 - 170 (2017)
This report is about the identification, synthesis and initial biological characterization of derivatives of 4-epi-isofagomine as pharmacological chaperones (PC) for human lysosomal β-galactosidase. The two epimers of 4-epi-isofagomine carrying a pentyl group at C-5a, namely (5aR)- and (5aS)-5a-C-pentyl-4-epi-isofagomine, were prepared by an innovative procedure involving in the key step the addition of nitrohexane to a keto-pentopyranoside. Both epimers were evaluated as inhibitors of the human β-galactosidase: the (5aR)-stereoisomer (compound 1) was found to be a very potent inhibitor of the enzyme (IC50?=?8?nM, 30× more potent than 4-epi-isofagomine at pH 7.3) with a high selectivity for this glycosidase whereas the (5aS) epimer was a much weaker inhibitor. In addition, compound 1 showed a remarkable activity as a PC. It significantly enhanced the residual activity of mutant β-galactosidase in 15 patient cell lines out of 23, with enhancement factors greater than 3.5 in 10 cell lines and activity restoration up to 91% of normal. Altogether, these results indicated that (5aR)-5a-C-pentyl-4-epi-isofagomine constitutes a promising PC-based drug candidate for the treatment of GM1-gangliosidosis and Morquio disease type B.
4-EPI-ISOFAGOMINE DERIVATIVES
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, (2016/11/17)
The present invention relates to 4-epi-isofagomine derivatives, pharmaceutically acceptable salts thereof, and the use of said 4-epi-isofagomine derivatives in the treatment and/or prevention of lysosomal storage diseases. The present invention is further
