Laetanine
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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Masters thesis,2009, University of Malaya.
Alkaloids isolated from litsea petiolata and phoebe tavoyana (Lauraceae).[Reference:
WebLink]
A study on the alkaloidal composition of two Malaysian plants from the family of Lauraceae i.e Litsea petiolata Hk.F and Phoebe tavoyana (Meissn.) Hk.F., has been carried out.
METHODS AND RESULTS:
The alkaloids were extracted with dichloromethane, whereas the isolation of the alkaloids was achieved by various chromatographic techniques such as column chromatography and preparative thin layer chromatography. A total of 14 compounds were isolated of which two are new alkaloids. The structural elucidations were carried out via spectroscopic methods; notably 1D and 2D NMR (COSY, HMQC, HMBC, NOE-DIFF), MS, IR, UV and comparison with the published data. Investigation of the alkaloidal content from the bark of Litsea petiolata afforded five alkaloids. Compounds isolated are two indole alkaloids (Î2-carboline) namely Harman or aribine 52, norharman 53, along with the three known isoquinoline alkaloids which normally occur in Lauraceae plant; Benzylisoquinolines: reticuline 31, aporphine: isoboldine 61; and one simple isoquinoline: thalifoline 100. Î2-carboline alkaloid: Harman and norharman type were isolated for the first time in the genus of Litsea.
CONCLUSIONS:
Isolation and purification of alkaloids from the bark of Phoebe tavoyana afforded 9 alkaloids of which 2 are new compounds: (+)-tavoyanine 101 and (-)-tavoyanine 102 along with four known aporphines; norboldine 77, Laetanine 73, roemerine 84, boldine 74 and one morphinandienone, sebiferine 103.
