Cryptoacetalide
Cryptoacetalide is a natural product from Salvia miltiorrhiza.
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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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Appl Microbiol Biotechnol. 2017 Jun 5.
New cryptotanshinone derivatives with anti-influenza A virus activities obtained via biotransformation by Mucor rouxii.[Pubmed:
28584912 ]
This paper provides an efficient platform to diversify the structure and pharmaceutical potentials of known natural products.
METHODS AND RESULTS:
Seven metabolites were obtained via the biotransformation of cryptotanshinone by the fungus Mucor rouxii AS 3.3447, and assigned as 13R-14R-hydroxy-anhydride of 16R-cryptotanshinone (1), 1S-hydroxy-anhydride of 16R-cryptotanshinone (2), 1R-hydroxy-anhydride of 16R-cryptotanshinone (3), 3S-hydroxy-epiCryptoacetalide (4), 3S-hydroxy-Cryptoacetalide (5), epiCryptoacetalide (6), and Cryptoacetalide (7). Among these compounds, 1-5 are novel. The ortho-naphthoquinone chromophore of cryptotanshinone was degraded and rearranged by M. rouxii. 1 and 3 showed good anti-influenza A virus activities with the reduced cytotoxic activities compared to the parent substrate cryptotanshinone (8).
CONCLUSIONS:
The structures of all the new compounds were determined on the basis of HRESIMS (high-resolution electrospray ionization mass spectroscopy) spectrometry, NMR (nuclear magnetic resonance) spectroscopy, ECD (electronic circular dichroism) calculations, and the CD (circular dichroism) of "in situ" method with [Rh2(OCOCF3)4].
Yao Xue Xue Bao. 2011 Jul;46(7):818-21.
Chemical constituents from Salvia przewalskii Maxim.[Pubmed:
22010351]
The investigation on Salvia przewalskii Maxim was carried out to find the relationship of the constituents and their pharmacological activities.
METHODS AND RESULTS:
The isolation and purification were performed by various chromatographies such as silica gel, Sephadex LH-20, RP-C18 column chromatography, etc. Further investigation on the fraction of the 95% ethanol extract of Salvia przewalskii Maxim yielded przewalskin Y-1 (1), anhydride of tanshinone-II A (2), sugiol (3), epiCryptoacetalide (4), Cryptoacetalide (5), arucadiol (6), 1-dehydromiltirone (7), miltirone (8), cryptotanshinone (9), tanshinone II A (10) and isotanshinone-I (11). Their structures were elucidated by the spectral analysis such as NMR (Nuclear Magnetic Resonance) and MS (Mass Spectrometry).
CONCLUSIONS:
Compound 1 is a new compound. Compounds 4 and 5 are mirror isomers (1 : 3). Compounds 4, 5, 6, 8, 11 were isolated from Salvia przewalskii Maxim for the first time.
