Rengyol
Standard reference
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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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Tetrahedron.2006 May;62(2): 4823–4828.
Chemo enzymatic synthesis of Rengyol and Isorengyol.[Reference:
WebLink]
Cyanohydrins 2 of O-protected 4-hydroxycyclohexanones 1 are excellent starting compounds for the synthesis of IsoRengyol (I) and Rengyol (II).
METHODS AND RESULTS:
The cyano group of the O-benzyl derivative 2d is first converted into the corresponding aldehyde 4, which via Wittig olefination led to the vinyl compound 6. Hydroboration of the trans-derivative (trans-6) leads, after debenzylation, to IsoRengyol, whereas hydroboration and debenzylation of the cis-isomer (cis-6) gives Rengyol. With hydroxynitrile lyases (HNLs) as catalysts the stereoselective preparation of cis- as well as trans-cyanohydrin 2d is possible, which enables the selective preparation of IsoRengyol or Rengyol, respectively. The trans-configuration of IsoRengyol and the cis-configuration of Rengyol were secured by X-ray crystal structure analysis.
Phytochemistry Letters, 2014, 7(2):111-3.
New cyclohexylethanoids from the leaves of Clerodendrum trichotomum[Reference:
WebLink]
METHODS AND RESULTS:
A series of cyclohexylethanoids, including two new compounds, 1-hydroxy-1-(8-palmitoyloxyethyl) cyclohexanone (1) and 5-O-butyl cleroindin D (2), together with five known ones, Rengyolone (3), cleroindin C (4), cleroindin B (5), Rengyol (6) and isoRengyol (7), were isolated from the leaves of Clerodendrum trichotomum. Their structures were elucidated on the basis of spectroscopic analyses and by comparison of their NMR data with those in the literatures. Compounds 1 and 2 were evaluated for their cytotoxicity against A549 human tumor cell line.
