Cryptanoside A
Cryptanoside A is a natural product from Cryptolepis buchanani.
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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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Revista Latinoamericana De Química, 1988,19(1):28-31.
New sarverogenin and isosarverogenin glycosides from Cryptolepis buchanani (Asclepiadaceae).[Reference:
WebLink]
METHODS AND RESULTS:
The structures of Cryptanoside A and cryptanoside C, the major cardenolide glycosides of the leaves and roots respectively of Cryptolepis buchanani, have been established as sarverogenin 3-O-α-L-oleandroside and sarverogenin 3-O-[β-D-glucopyranosyl-(1→4)-α-L-oleandroside] on the basis of their 1H and 13C NMR spectroscopic properties and chemical correlation with sarverogenin.
CONCLUSIONS:
Cryptanoside B, a minor constituent of the leaf extract, is isosarverogenin 3-O-α-L-oleandroside. Cryptanoside D, the corresponding isosarverogenin derivative of cryptanoside C, was isolated, as its acetate, from the crude product of acetylation of cryptanoside C. Germanicol docosanoate is a major constituent of the root extract.
