(5aS,6R,6aR)-MK-8666

(5aS,6R,6aR)-MK-8666 is a selective GPR40 agonist with activity in promoting fatty acid-induced insulin secretion in pancreatic β cells and intestinal enteroendocrine cells. (5aS,6R,6aR)-MK-8666 has been studied for the inhibition of type 2 diabetes and has shown significant blood glucose lowering effects. Although (5aS,6R,6aR)-MK-8666 is considered to have potential inhibitory advantages, its development was stopped in Phase I clinical trials due to liver safety issues.