Chemoenzymatic synthesis of 6-O-alkanoyl-N-alkylgluconamides
β Scribed by Woudenberg-van-Oosterom, Marjolein ;van Rantwijk, Fred ;Sheldon, Roger A.
- Book ID
- 102464276
- Publisher
- John Wiley and Sons
- Year
- 1996
- Weight
- 431 KB
- Volume
- 98
- Category
- Article
- ISSN
- 0931-5985
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β¦ Synopsis
Glucono
-&lactone was acylated selectively at the 6-position by fatty acid ethyl esters in the presence of Candida antarctica lipase in refluxing tert.butyl alcohol (82OC). Upon subsequent reaction with CI6 and C18 amines in methanol the corresponding 6-0-alkanoyl-N-alkylgluconamides selectively precipitated. These compounds were tested as cheap substitutes for ceramides, which retain water in the human skin and are used as natural conditioners in personal care preparations. However, the four 6-0-alkanoyl-N-alkylgluconamides derivatives failed to pass the test to gel squalene. Chemoenzymatische Synthese von 6-0-Alkanoyl-N-alkylgluconamiden. Glucono-&lacton wurde an 6-Position selektiv durch Fettsaureethylester mittels Candida antarcrica-Lipase acyliert unter Reflux von tert.Butylalkoho1 (82OC). Unter fortlaufender Reaktion mit CI6-und C18-Aminen in Methanol fielen die jeweiligen 6-0-AIkanoyl-N-alkylgluconamide selektiv aus. Diese Komponenten wurden als kostengiinstiger Ersatz fiir Ceramide untersucht, welche in der menschlichen Haut Wasser zuriickhalten und als natiirliche Zusatzstoffe in der Kosmetik zum Einsatz kommen. Die vier 6-0-Alkynoyl-N-alkylgluconamid-Derivate bestanden jedoch den Test zum Erstarren von Squalen nicht.
π SIMILAR VOLUMES
The crystal structures of methyl 6-O-n-octanoyl-/3-D-glucopyranoside 1 and methyl 6-O-n-decanoyl-/3-D-glucopyranoside 2, which are types of glycosurfactants, were determined by X-ray analysis. Anhydrous crystals were obtained from a diethyl ether-acetone solution. The crystals are monoclinic, and th
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