4'-Hydroxy-2-O-methylanigorufone
9-(4'-Hydroxyphenyl)-2-methoxyphenalen-1-one(4'-Hydroxy-2-O-methylanigorufone) is a phytoalexin. It shows a strong α-glucosidase inhibitory effect.
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Providing storage is as stated on the product vial and the vial is kept tightly sealed, the product can be stored for up to
24 months(2-8C).
Wherever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20C. Generally, these will be useable for up to two weeks. Before use, and prior to opening the vial we recommend that you allow your product to equilibrate to room temperature for at least 1 hour.
Need more advice on solubility, usage and handling? Please email to: service@chemfaces.com
The packaging of the product may have turned upside down during transportation, resulting in the natural compounds adhering to the neck or cap of the vial. take the vial out of its packaging and gently shake to let the compounds fall to the bottom of the vial. for liquid products, centrifuge at 200-500 RPM to gather the liquid at the bottom of the vial. try to avoid loss or contamination during handling.
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Molecules. 2014 Jul 18;19(7):10563-73.
Isolation and characterization of an α-glucosidase inhibitor from Musa spp. (Baxijiao) flowers.[Pubmed:
25045894]
The use of α-glucosidase inhibitors is considered to be an effective strategy in the treatment of diabetes.
METHODS AND RESULTS:
Using a bioassay-guided fractionation technique, five Bacillus stearothermophilus α-glucosidase inhibitors were isolated from the flowers of Musa spp. (Baxijiao). Using NMR spectroscopy analysis they were identified as vanillic acid (1), ferulic acid (2), β-sitosterol (3), daucosterol (4) and 9-(4'-hydroxyphenyl)-2-methoxyphenalen-1-one (4'-Hydroxy-2-O-methylanigorufone,5). The half maximal inhibitory concentration (IC50) values of compounds 1-5 were 2004.58, 1258.35, 283.67, 247.35 and 3.86 mg/L, respectively. Compared to a known α-glucosidase inhibitor (acarbose, IC50=999.31 mg/L), compounds 3, 4 and 5 showed a strong α-glucosidase inhibitory effect.
A Lineweaver-Burk plot indicated that compound 5 is a mixed-competitive inhibitor, while compounds 3 and 4 are competitive inhibitors. The inhibition constants (Ki) of compounds 3, 4 and 5 were 20.09, 2.34 and 4.40 mg/L, respectively.
CONCLUSIONS:
Taken together, these data show that the compounds 3, 4 and 5 are potent α-glucosidase inhibitors.
Biosci Biotechnol Biochem. 1998;62(1):95-101.
Phenylphenalenone-type Phytoalexins from Unripe Buñgulan Banana Fruit.[Pubmed:
27393357 ]
METHODS AND RESULTS:
Fourteen phenylphenalenone-type phytoalexins (1-14), including three new compounds, were isolated from the peel of unripe Musa acuminata [AAA] cv. Buñgulan fruit which had been injured and then inoculated with conidia of Colletotrichum musae. These new phytoalexins were identified as (+)-cis-2,3-dihydro-2,3-dihydroxy-4-(4'-hydroxyphenyl)phenalen-1-one (12), 9-(3',4'-dimethoxyphenyl)-2-methoxyphenalen-1-one (13) and 9-(4'-hydroxyphenyl)-2-methoxyphenalen-1-one (4'-Hydroxy-2-O-methylanigorufone ,14). The ratios of the relative intensities of the [M](+)/[M-H](+) ions or [M-H2O](+)/[M-H2O-H](+) ions in the EI mass spectra were applied to discriminate between 4- and 9-phenylphenalenones.
CONCLUSIONS:
An antifungal test on the phytoalexins showed that a phenolic hydroxyl group was essential for the activity.
