Two polymethoxylated flavonoids with antioxidant activities and a rearranged clerodane diterpenoid from the leaf exudates of Microglossa pyrifolia

Aggrey Akimanya,Jacob O. Midiwo, Joseph Matasyoh,Francis Okanga,Veronica M. Masila,Larry Walker,Babu L. Tekwani,Ilias Muhammad,Leonidah Kerubo Omosa

Phytochemistry Letters（2015）

Cited 9|Views3

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Abstract

•Two new flavonoids and one new diterpenoid from Microglossa pyrifolia leaf exudate.•Structures elucidated based on spectroscopic evidence.•Some flavonoids showed good antioxidant activities.•Hydroxyl at C-4′ position in flavones responsible for good antioxidant activities.•Oxygenation at C-3 in flavone skeleton responsible for good antioxidant activities.

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Key words

5,7,4′-Trihydroxy-3,8,3′,5′-tetramethoxyflavone,5,7,3′-Trihydroxy-3,8,4′,5′-trimethoxyflavone,8-Acetoxyisochiliolide lactone,Microglossa pyrifolia,Antioxidant activities,Antileishmanial activities

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