New alpha-glucosidase inhibitors and antibacterial compounds from Myrtus communis L.
申请人:Rahman Attaur
公开号:US20080269510A1
公开(公告)日:2008-10-30
Three new acylphloroglucinols, myrtucommulone-D (Compound 1), myrtucommulone-E (Compound 2), myrtucommulone-C (Compound 3), and a known acyphloroglucinol myrtucommulone B (Compound 4) were isolated from a methanolic extract of
Myrtus communis
L. The structures of compounds 1, 2 and 4 were also unambiguously determined by single X-ray diffraction analysis. The compounds 1-4 were found to be more potent α-glucosidase inhibitors than the clinically used standards, acarbose and deoxynojirimycin. The compound 3 exhibited the highest activity among all the acylphloroglucinols, with an IC
50
=35.4±1.15 μM. The compounds 1 and 2 also exhibited strong antibacterial activities.