2,3-O-Isopropylidenyl euscaphic acid
2,3-O-Isopropylidenyl euscaphic acid shows good hepatoprotective effect,the EC50 value of 88.36±3.25 uM in Hep G2 cells.
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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.
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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 Traditional & Herbal Drugs, 2003, 32(16):1663-5.
Chemical constituents from root of Rubus irenaeus.[Reference:
WebLink]
To investigate the chemical constituents from the methanol extract of the root of Rubus irenaeus Focke.
METHODS AND RESULTS:
EtOAc extraction, normal and reverse phase silica gel column chromatography were used for isolation. Spectroscopic methods ( 13 CNMR , 1HNMR , DEPT, 2DNMR, and FAB-MS) and comparison with authentic samples were used for identification. Ten compounds were isoated and characterized as 2α, 19α-dihydroxyl-3-oxo-urs-12-en-28-oic acid (Ⅰ), 2-oxo-pomolic acid (Ⅱ), fupenzic acid (Ⅲ), euscaphic acid (Ⅳ), 2α, 3α, 19α-trihydroxyl-olean-12-en-28-oic acid (Ⅴ),2,3-O-Isopropylidenyl euscaphic acid (Ⅵ), pomolic acid (Ⅶ), 2α, 3β-dihydroxyl-lup-20(29)-en-28-oic acid(Ⅷ), catechin (Ⅸ) and daucosterol (Ⅹ).
CONCLUSIONS:
These compounds were obtained from this plant for the first time.
