CUR-61414 is a novel small molecule Hh inhibitor that can block elevated Hh signaling activity resulting from oncogenic mutations in Patched-1. CUR-61414 can suppress proliferation and induce apoptosis of basaloid nests in the BCC model systems, whereas having no effect on normal skin cells. Cur-61414 was successful in eradicating the basal cell carcinomas in mouse ex-vivo model but failed in phase I trials in humans as it could not penetrate the human skin.

The diethyl ester of oxalic acid has been most commonly used in synthesis. It was isolated from a filamentous of Aspergillus niger.