Sophoracarpan B
Sophoracarpan B is a natural product from Sophora tomentosa L.
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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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Chemical & Pharmaceutical Bulletin, 1990, 38(10):2756-2759.
Chemical studies on Sophora tomentosa: the isolation of a new class of isoflavonoid.[Reference:
WebLink]
Two new pterocarpans, sophoracarpan A and Sophoracarpan B, were isolated from Sophora tomentosa L. (Leguminosae) in addition to three known isoflavonoids, wighteone (erythrinin B), sophoraisoflavanone A and l-maackiain.
METHODS AND RESULTS:
The structures of sophoracarpans A and B were elucidated as 6β, 9-dimethoxy-3-hydroxypterocarpan and 3-hydroxy-6β-methoxy-8, 9-methylenedioxypterocarpan, respectively, on the spectroscopic basis. The configurations at C-6, C-6a, and C-11a of both compounds were determined by a series of nuclear magnetic resonance irradiation experiments.
CONCLUSIONS:
The isoflavone wighteone, known as an antifungal phytoalexin in several genera of leguminous plants, was also found to occur in the genus Sophora.
