8-pCPT-2′-O-Me-cAMP
8-pCPT-2′-O-Me-cAMP (8-CPT-2'-O-Me-cAMP), an analog of cAMP, is an activator of exchange proteins activated by cAMP (Epac). 8-pCPT-2′-O-Me-cAMP activates Epac1 (EC50 = 2.2 μM), but not PKA (EC50 >10 μM). 8-pCPT-2′-O-Me-cAMP stimulates Epac-mediated Ca2+ release in pancreatic β-cells in vitro. 8-pCPT-2′-O-Me-cAMP is a Rap1 activator. 8-pCPT-2′-O-Me-cAMP enhances the retinal pigment epithelium barrier against the pathological choroidal endothelial cell invasion that occurs in macular degeneration[3].