Compounds of formula (I):
wherein R represents various substituent groups, are useful as inhibitors of glucosylceramide synthase.
式(I)的化合物:其中R代表各种取代基团,可用作葡糖基硫脂合成酶的抑制剂。
Dual-Action Lipophilic Iminosugar Improves Glycemic Control in Obese Rodents by Reduction of Visceral Glycosphingolipids and Buffering of Carbohydrate Assimilation
作者:Tom Wennekes、Alfred J. Meijer、Albert K. Groen、Rolf G. Boot、Johanna E. Groener、Marco van Eijk、Roelof Ottenhoff、Nora Bijl、Karen Ghauharali、Hang Song、Tom J. O’Shea、Hanlan Liu、Nelson Yew、Diane Copeland、Richard J. van den Berg、Gijsbert A. van der Marel、Herman S. Overkleeft、Johannes M. Aerts
DOI:10.1021/jm901281m
日期:2010.1.28
The lipophilic iminosugar N-[5-(adamantan-1-ylmethoxy)pentyl]-1-deoxynojirimycin (2, AMP-DNM) potently controls hyperglycemia in obese rodent models of insulin resistance. The reduction of visceral glycosphingolipids by 2 is thought to underlie its beneficial action. It cannot, however, be excluded that concomitant inhibition of intestinal glycosidases and associated buffering of carbohydrate assimilation add to this. To firmly establish the mode of action or 2, we developed a panel of lipophilic iminosugars varying in configuration at C-4/C-5 and N-substitution of the iminosugar. From these we identified the L-ido derivative of 2, L-ido-AMP-DNM (4), as a selective inhibitor of glycosphingolipid synthesis. Compound 4 lowered visceral glycosphingolipids in ob/ob mice and ZDF rats on a par with 2. In contrast to 2, 4 did not inhibit sucrase activity or sucrose assimilation. Treatment with 4 was significantly less effective in reducing blood glucose and HbAlc. We conclude that the combination of reduction of glycosphingolipids in tissue and buffering of carbohydrate assimilation by 2 produces a superior glucose homeostasis.