Novel inhibitory activity of the Staphylococcus aureus NorA efflux pump by a kaempferol
rhamnoside isolated from Persea lingue Nees J Antimicrob Chemother.
Some biological active compounds, including alkaloids, triterpenes, lipids, flavonoids, glycosides, kaempferol
rhamnoside, bufadienolides, phenols, and organic acids have been isolated from the plant [6-8].
These included punicalin (peak 1; retention time: 11.2 min), ellagic acid derivative (peak 2; retention time: 12.3 min), galloyl-HHDP-glucose (peak 3; retention time: 17.4 min), castalagin derivative (peaks 4 and 5; retention times: 23.6 and 26.6 min, resp.), granatin B (peak 6; retention time: 26.7 min), ellagic acid
rhamnoside (peak 7; retention time: 32.2 min), kaempferol-3-O-glucoside (peak 8; retention time: 32.7 min), kaempferol derivative (peak 9; retention time: 34.9 min), and kaempferol-arabinoside (peak 10; retention time: 38.3 min).
Compound 38 suffered the neutral loss of 308Da (rutinoside), whereas compound 43 displayed the neutral loss of 146 (
rhamnoside) and 308 Da.
ficus-indica Total phenolic acids Total betacyanins Ferulic acid glucoside, piscidic acid, isorhamnetinpentosyl- rutinoside, isorhamne- tinpentosyl-glucoside, isorhamnetinpentosyl-
rhamnoside O.
The concentration of both quercetin glucuronide and
rhamnoside was quite equal in all the studied wines except the PNRo.
Rastogi, A novel type of bicoumarin
rhamnoside from Lasiosipho eriocephalus, Phytochemistry, 20, 2044 (1981).
A fragment ion at m/z 306 refers to the deprotonated glutathione (GSH) moiety and CNLs of 120 and 146, indicating the presence of a
rhamnoside group.
Peak 5 was assigned to ellagic acid
rhamnoside, with [[M-H].sup.-] at m/z 447 yielding the product ion at m/z 301 (-146 Da, rhamnose) [22].
Antibacterial and synergy of a flavanonol
rhamnoside with antibiotics against clinical isolates of methicillin-resistant Staphylococcus aureus (MRSA).
Antibacterial and synergy of a flavononol
rhamnoside with antibiotics against clinical isolates of methicillin-resistant Staphylococcus aureus (MRSA).
The present report deals mainly with the anti-MRSA activity of a flavanonol
rhamnoside, i.e.