Laurycolactone B
Laurycolactone B is a natural product from Eurycoma longifolia Jack.
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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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Tetrahedron Letters, 1982 , 23 (49) :5159-5162.
Structure of laurycolactone A and B, new C18 - quassinoids from Eurycoma longifolia and revised structured of Eurycomalactone (X - ray analysis)[Reference:
WebLink]
METHODS AND RESULTS:
Laurycolactone A and Laurycolactone B are new quassinoids with a C18 basic skeleton isolated from the Vietnamese Simaroubaceae, Eurycoma longifolia Jack. The structure of Eurycomalactone, a C19 quassinoid isolated previously from the same plant, has been revised and shown to be .
CONCLUSIONS:
The structures have been established by spectral means and those of and confirmed by X-ray diffraction analysis.
Phytochemistry. 2002 Apr;59(8):833-7.
Quassinoids from Eurycoma longifolia.[Pubmed:
11937162]
METHODS AND RESULTS:
Three quassinoids, eurycolactone D (1), eurycolactone E (2) and eurycolactone F (3) were isolated from the roots of Eurycoma longifolia Jack.
CONCLUSIONS:
The structures of 1-3 were elucidated by spectroscopic methods, and that of 3 was further confirmed by X-ray crystallography. The known quassinoids, Laurycolactone B (4) and eurycomalactone (5) were also identified.
