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Inositol Derivatives with Anti-Inflammatory Activity from Leaves of Solanum capsicoides Allioni

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Eight new inositol derivatives, solsurinositols A–H (1–8), were isolated from the 70% EtOH extract of the leaves of Solanum capsicoides Allioni. Careful isolation by silica gel column chromatography followed by… Click to show full abstract

Eight new inositol derivatives, solsurinositols A–H (1–8), were isolated from the 70% EtOH extract of the leaves of Solanum capsicoides Allioni. Careful isolation by silica gel column chromatography followed by preparative high-performance liquid chromatography (HPLC) allowed us to obtain analytically pure compounds 1–8. They shared the same relative stereochemistry on the ring but have different acyl groups attached to various hydroxyl groups. This was the first time that inositol derivatives have been isolated from this plant. The chemical structures of compounds 1–8 were characterized by extensive 1D nuclear magnetic resonance (NMR) and 2D NMR and mass analyses. Meanwhile, the in vitro anti-inflammatory activity of all compounds was determined using lipopolysaccharide (LPS)-induced BV2 microglia, and among the isolates, compounds 5 (IC50 = 11.21 ± 0.14 µM) and 7 (IC50 = 14.5 ± 1.22 µM) were shown to have potential anti-inflammatory activity.

Keywords: anti inflammatory; inflammatory activity; leaves solanum; solanum capsicoides; inositol derivatives

Journal Title: Molecules
Year Published: 2022

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