Functionalized pyrrolidine inhibitors of human type II α-mannosidases as anti-cancer agents: Optimizing the fit to the active site

Refining the chemical structure of functionalized pyrrolidine-based inhibitors of Golgi α-mannosidase II (GMII) to optimize binding affinity provided a lead molecule that demonstrated nanomolar competitive inhibition of α-mannosidases II and an optimal fit in the active site of Drosophila GMII by X-ray crystallography. Esters of this lead compound also inhibited the growth of human glioblastoma and brain-derived endothelial cells more than the growth of non-tumoral human fibroblasts, suggesting their potential for anti-cancer therapy.

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