Ikshusterol
Reference standards.
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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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Journal of the Chemical Society Perkin Transactions, 1976(1):23.
Structures of eight new triterpenoids and isolation of other triterpenoids and epi-ikshusterol from the stems of Lithocarpus cornea.[Reference:
WebLink]
METHODS AND RESULTS:
Eight new triterpenoids from the light petroleum extract of the stems of Lithocarpus cornea(Lour.) Rhed. have been proved to be taraxer-14-ene-3β,29-diol (VIII) and its diacetate (VII), 29-hydroxytaraxer-14-en-3-one (X) and its acetate (IX), 14α-hydroxytaraxeran-3-one (XXIX), taraxerane-3β,14α-diol (XXX), 22-hydroxy-21αH-hopan-3-one (XXIII), and lup-20(29)-ene-3β,27-diol (XXXII).
CONCLUSIONS:
Other triterpenoids isolated from the same extract, besides those already reported 1 were lupeol, betulin, and myricadiol (I). The steroid epi-Ikshusterol (stigmast-5-ene-3β,7β-diol)(XXXVII) was also obtained.
Chinese Traditional and Herbal Drugs,2001, 32(11):964-966.
Studies on chemical constituents of Adenophora wawreana.[Reference:
WebLink]
To study systematically on the chemical constituents of the roots of Adenophora wawreana Zahibr.
METHODS AND RESULTS:
The chemical constituents were extracted and isolated systematically with solvents and silica gel chromatography Their structures were determined on the basis of spectral data (IR, 1HNMR, 13 CNMR and MS). Twelve compounds were obtained, nine of them were identified as β sitosteryl hexadecanoate (Ⅰ), β sitosteryl octadecanoate (Ⅱ), α amyrin acetate (Ⅲ), lupeol acetate (Ⅳ), lupenone (Ⅵ), friedelin (Ⅶ), β sitosterol (Ⅸ), Ikshusterol (Ⅹ) and daucosterol ( ⅩⅡ ).
CONCLUSIONS:
All of them were obtained for the first time from A wawreana and compounds Ⅰ, Ⅱ, Ⅲ, Ⅳ, Ⅶ were obtained for the first time from Adenophora Fisch.
