Synthesis of NAG-thiazoline-derived inhibitors for β-N-acetyl-d-hexosaminidases
2015
Kong, Hanchu | Chen, Wei | Lu, Huizhe | Yang, Qing | Dong, Yanhong | Wang, Daoquan | Zhang, Jianjun
β-N-Acetyl-d-hexosaminidases are responsible for the metabolism of glycoconjugates in diverse physiological processes that are important targets for medicine and pesticide development. Fourteen new NAG-thiazoline derivatives were synthesized by cyclization and click reaction using d-glucosamine hydrochloride as the starting material. All the compounds created were characterized by NMR and HRMS spectra. A preliminary bioassay, using four enzymes from two β-N-acetyl-d-hexosaminidase families, showed that most of the compounds synthesized exhibit selective inhibition of GH84 β-N-acetyl-d-hexosaminidase. Among the compounds tested, compounds 5a (IC50=12.6 μM, hOGA) and 5e (IC50=12.5 μM, OfOGA) proved to be a highly selective and potent inhibitor.
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