1,4,7-Eudesmanetriol
1α,4β,7β-Eudesmanetriol and 1β,4β,7β-Eudesmanetriol can inhibit growth of Pseudomonas stutzeri with a MIC value of 117 uM, they also show remarkable activities against acetylcholinesterase enzyme with IC50 values ranging between 25 and 26 uM.
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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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Nat. Prod. Res., 2011, 26(9):850-8.
A new sesquiterpenoid from the rhizomes of Homalomena sagittifolia.[Pubmed:
21999629 ]
METHODS AND RESULTS:
A new sesquiterpenoid, 1α,4β,7β-eudesmanetriol (1,4,7-Eudesmanetriol,1), was isolated together with the known compounds 1β,4β,7β-eudesmanetriol (2) and oplopanone (3) from the rhizomes of Homalomena sagittifolia. The structures of these compounds were determined by extensive spectral analyses. The compounds 1 and 2 inhibited growth of Pseudomonas stutzeri with a MIC value of 117 μM when evaluated for antibacterial activity using the minimum concentration assay. Both these compounds showed remarkable activities against acetylcholinesterase enzyme with IC(50) values ranging between 25 and 26 μM.
CONCLUSIONS:
The isolation of these sesquiterpenoids and their biological activities observed in this study support the reported traditional uses of H. sagittifolia for the treatment of microbial related diseases and central nervous system disorders.
