Bayogenin
Bayogenin, arjunolic acid, hederagonic acid and 4-epi-hederagonic acid are gly-cogen phosphorylase inhibitors with moderate potency.
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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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《Chinese Journal of Natural Medicines》 2010-06
Synthesis and Biological Evaluation of Arjunolic Acid, Bayogenin, Hederagonic Acid and 4-Epi-hederagonic Acid as Glycogen Phosphorylase Inhibitors[Reference:
WebLink]
To study glycogen phosphorylase inhibitory activity of natural pentacyclic triterpenes bearing 23-hydroxy or 24-hydroxy.
METHODS AND RESULTS:
Arjunolic acid, Bayogenin, hederagonic acid and 4-epi-hederagonic acid were synthesized from oleanolic acid as the starting material and biologically evaluated as glycogen phosphorylase inhibitors. Arjunolic acid, Bayogenin, hederagonic acid and 4-epi-hederagonic acid were successfully semi-synthesized by multiple steps. The synthesis of arjunolic acid was via 11 steps in about 10% overall yield, and Bayogenin via 14 steps in about 12% overall yield. Biological evaluation indicated that arjunolic acid, Bayogenin, hederagonic acid and 4-epi-hederagonic acid showed moderate potency of glycogen phosphorylase inhibition with IC50 of 53-103 μmol/L.
CONCLUSIONS:
Arjunolic acid, Bayogenin, hederagonic acid and 4-epi-hederagonic acid are gly-cogen phosphorylase inhibitors with moderate potency. Insert of 23-hydroxy or 24-hydroxy to oleanane skeleton has a tendency to be unfavorable to GP inhibition.
