1-Acetoxy-5-deacetylbaccatin I
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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Yao Xue Xue Bao. 1991;26(10):747-54.
Studies on the chemical constituents of Taxus yunnanensis.[Pubmed:
1688071 ]
METHODS AND RESULTS:
From this extract eight taxane diterpenoids and taxane alkaloids have been isolated. Seven of them have been identified as taxinine E(1), taxinine J(2), 1-Acetoxy-5-deacetylbaccatin I(4), baccatin III(5), taxol (6), cephalomannine (7), 7-xylosyl-10-deacetyl taxol (8) from their physical and spectroscopic properties. A new taxane diterpenoid, named yunnanxane (3) was elucidated as taxa-4 (20), 11-diene-2 alpha, 5 alpha, 10 beta, 14 beta-tetraoln2 alpha,5 alpha,10 beta-triacetaten-14 beta-alpha-methyl-beta- hydroxylbutyratebyhighfield 1H NMR, 13C NMR, 1H-1HCOSY, 13C-1HCOSY, 13C-1HCOLOC and X-ray analysis.
CONCLUSIONS:
It showed the inhibitory effect on A2780 DDP, KB and HCT-8 cell line in vitro. All of the eight compounds were isolated from this species for the first time.
