Discovery and Characterization of an Inhibitor of Glucosylceramide Synthase
摘要:
Targeting glycosphingolipid synthesis has emerged as a novel approach for treating metabolic diseases. 32 (EXEL-0346) represents a new class of glucosylceramide synthase (GCS) inhibitors. This report details the elaboration of hit 8 with the goal of achieving and maintaining maximum GCS inhibition in vivo. 32 inhibited GCS with an IC50 of 2 nM and achieved maximum hepatic GCS inhibition after four or five daily doses in rodents. Robust improvements in glucose tolerance in DIO mice and ZDF rats were observed after 2 weeks of q.d. dosing. Four weeks of dosing resulted in decreased plasma triglycerides and reduced hepatic fat deposition. Thus, 32 provides insight into the amount of metabolic regulation that can be restored following achievement of maximal target knockdown.
The discovery of novel 8-azabicyclo[3.2.1]octan-3-yl)-3-(4-chlorophenyl) propanamides as vasopressin V1A receptor antagonists
摘要:
The discovery of a novel series of 8-azabicyclo[3.2.1] octan-3-yl)-3-(4-chlorophenyl) propanamide antagonists of the vasopressin V-1A receptor is disclosed. Compounds 47 and 48 were found to be high affinity, selective vasopressin V-1A antagonists. (C) 2011 Elsevier Ltd. All rights reserved.