Pachyaximine A
Pachyaximine A possesses significant antibacterial activity against Escherichia coli, Staphylococcus aureus, Corynebacterium diphtheriae and Corynebacterium pyrogenes. (-)-Pachyaximine A demonstrates significant activity as antiestrogen binding site (AEBS)-inhibitory agents, and potentiates significantly the antiestrogenic effect mediated by tamoxifen in cultured Ishikawa cells.
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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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Pak J Pharm Sci. 2005 Apr;18(2):3-5.
Anti-bacterial alkaloids of Saracococca saligna.[Pubmed:
16431389]
METHODS AND RESULTS:
The crude ethanolic extract of Saracococca saligna was found to be cytotoxic and antibacterial but produced no platelet aggregation induced by ADP. Antibacterial activity of two known alkaloid, pachyaximine-A and saracodine was determined.
CONCLUSIONS:
Pachyaximine-A possessed significant antibacterial activity against Escherichia coli, Staphylococcus aureus, Corynebacterium diphtheriae and Corynebacterium pyrogenes. Saracodme showed moderate activity against Staphylococcus pyrogenes, Escherichia coli, Staphylococcus aureus, Corynebacterium diphtheriae, Shigella boydii and Klebsiella pneumoniae.
J Nat Prod. 1998 Oct;61(10):1257-62.
Activity-guided isolation of steroidal alkaloid antiestrogen-binding site inhibitors from Pachysandra procumbens.[Pubmed:
9784163 ]
METHODS AND RESULTS:
Four novel steroidal alkaloids, (+)-(20S)-20-(dimethylamino)-3-(3'alpha-isopropyl)-lactam-5alpha-+ ++preg n-2-en-4-one (1), (+)-(20S)-20-(dimethylamino)-16alpha-hydroxy-3-(3'alpha-isopropyl) -la ctam-5alpha-pregn-2-en-4-one (2), (+)-(20S)-3-(benzoylamino)-20-(dimethylamino)-5alpha-pregn-2-en-++ +4beta -yl acetate (3), and (+)-(20S)-2alpha-hydroxy-20-(dimethylamino)-3beta-phthalimido-5 alpha- pregnan-4beta-yl acetate (4), as well as five known compounds, (-)-Pachyaximine A (5), (+)-spiropachysine (6), (+)-axillaridine A (7), (+)-epipachysamine D (8), and (+)-pachysamine B (9), were isolated from Pachysandra procumbens, using a bioassay-guided fractionation based on inhibition of 3H-tamoxifen binding at the antiestrogen binding site (AEBS).
CONCLUSIONS:
Compounds 1-7 and 9 demonstrated significant activity as AEBS-inhibitory agents, and compounds 3, 5 and 9 were found to potentiate significantly the antiestrogenic effect mediated by tamoxifen in cultured Ishikawa cells. The structure elucidation of compounds 1-4 was carried out by spectral data interpretation.
