16-O-Acetylpolyporenic acid C
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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.
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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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Constituents of the fungi Daedalea quercina and Daedaleopsis confragosa var. tricolor.[Pubmed: 11014261
Phytochemical examination of solvent extracts of the wood-rotting fungi Daedalea quercina and Daedaleopsis confragosa var. tricolor led to the isolation of five new triterpene derivatives and some known fungal constituents.
METHODS AND RESULTS:
All structures were identified by one- and two-dimensional NMR spectroscopy and mass spectrometry. From Daedalea quercina, the new natural products 16-O-Acetylpolyporenic acid C, 16alpha-acetoxy-24-methylene-3-oxolanost-8-en-21-oic acid, (+)-24-methylene-3,23-dioxolanost-8-en-26-oic acid, (+)-3beta,12beta-dihydroxy-24-methyl-23-oxolanost-8-en-26-oi c acid and 12beta,23-epoxy-3alpha,23-dihydroxy-24-methyllanost-8- en-26-oic acid could be isolated. From Daedaleopsis confragosa var. tricolor, the compounds 3alpha-carboxyacetoxyquercinic acid, 3alpha-carboxyacetoxy-24-methylene-23-oxolanost-8-en-2 6-oic acid and 5alpha,8alpha-epidioxyergosta-6,22-dien-3beta-ol were identified.
These are the first described triterpene derivatives isolated from this fungus.