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Pancreatic β-cell dysfunction and death are important feature of diabetes mellitus. Beta-cell protection has demonstrated clinical benefits in the treatment of this disease. In the present study, andrographolide derivatives with nitric oxide (NO)-releasing capability were synthesized and their protective effects against tert-butyl hydroperoxide (t-BHP) induced cell damage were investigated in RIN-m cells. Compound 6b was found to release a moderate amount of NO and was more potent than its natural parent andrographolide in inhibiting cell apoptosis. These findings suggested that andrographolide derivatives with NO-releasing capacity may be a potential therapy for diabetes.

Synthesis and Preliminary Biologic Activity Evaluation of Nitric Oxide-Releasing Andrographolide Derivatives in RIN-m Cells