2304-80-5Relevant academic research and scientific papers
Development of Asymmetric Transfer Hydrogenation with a Bifunctional Oxo-Tethered Ruthenium Catalyst in Flow for the Synthesis of a Ceramide (D-erythro-CER[NDS])
Touge, Taichiro,Kuwana, Masahiro,Komatsuki, Yasuhiro,Tanaka, Shigeru,Nara, Hideki,Matsumura, Kazuhiko,Sayo, Noboru,Kashibuchi, Yoshinobu,Saito, Takao
supporting information, p. 452 - 461 (2019/01/04)
The development of an efficient synthetic route for an optically active ceramide compound (d-erythro-CER[NDS]) is described. The route proceeds through asymmetric transfer hydrogenation in a pipes-in-series flow reactor with oxo-tethered ruthenium complex-catalyzed dynamic kinetic resolution. This synthesis was accomplished without any expensive reagents, and none of the intermediates required isolation. This resulted in a robust process that has been successfully run on a production scale.
METHOD FOR PRODUCING HIGH-PURITY CERAMIDE
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Paragraph 0052; 0053, (2014/11/13)
Provided is a method for producing an optically active ceramide by an N-acylation (amidation) reaction of an optically active aminodiol, wherein a crude ceramide produced therein is purified by an industrially advantageous process. Namely, provided is a method for producing a high-purity ceramide that has high diastereo purity with high yield. A high-purity ceramide is produced by: a step wherein a ceramide represented by general formula (1) is produced by reacting an aminodiol with an alkyl ester having 1-5 carbon atoms of an aliphatic carboxylic acid having 12-24 carbon atoms, said aliphatic carboxylic acid optionally having a hydroxyl group, in a hydrocarbon solvent having 5-10 carbon atoms; and a step wherein an alcohol having 1-3 carbon atoms is added into the reaction mixture obtained in the preceding step, thereby causing crystals to precipitate. (In the formula, R1 represents an alkyl group which has 13-17 carbon atoms and optionally has a carbon-carbon unsaturated bond; R2 represents an alkyl group which has 11-23 carbon atoms and optionally has a hydroxyl group; and * represents an optically active state.)
PROCESS FOR PRODUCING OPTICALLY ACTIVE BETA-HYDROXY-ALPHA-AMINOCARBOXYLIC ACID ESTER
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Page/Page column 19, (2009/06/27)
It is an objective of the present invention to produce an anti-form of an optically active β-hydroxy-α-aminocarboxylic acid ester efficiently, simply and industrially advantageously. The objective can be accomplished by directly and selectively producing the anti-form of the optically active β-hydroxy-α-aminocarboxylic acid ester by asymmetric reduction of a β-keto-α-aminocarboxylic acid ester using an optically active amine complex as a catalyst. Further, the β-keto-α-aminocarboxylic acid ester as a raw material can be produced at a high yield by reacting a glycine derivative with a carboxylic acid derivative.
The synthesis and biological characterization of a ceramide library
Chang, Young-Tae,Choi, Jaehwa,Ding, Sheng,Prieschl, Eva E.,Baumruker, Thomas,Lee, Jae-Mok,Chung, Sung-Kee,Schultz, Peter G.
, p. 1856 - 1857 (2007/10/03)
A facile synthesis of a combinatorial ceramide library and their activities in the NF-κB pathway and in apoptosis induction/prevention were demonstrated. A novel NF-κB activating molecule was discovered among ceramide containing β-galactose, and the structural requirements of ceramides for apoptosis induction was elucidated. Copyright
Agent for protecting skin and hair moisture
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Page column 5, (2008/06/13)
A skin protective agent which comprises as a sole ceramide component the erythro (2S,3R) type of a ceramide and has a remarkably excellent water-barrier ability.
Method of making primary amide derivative
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, (2008/06/13)
A method of selective N-acylation of an aminodiol having a primary alcoholic hydroxyl group and a secondary alcoholic hydroxyl group, in which the objective product can be prepared in high yield and without troublesome extraction and purification operations. More particularly, a method of making a primary amide derivative represented by the following general formula (3) is disclosed: STR1 wherein R1 represents a linear saturated aliphatic hydrocarbon group having 11 to 19 carbon atoms, R2 represents a linear saturated or unsaturated aliphatic hydrocarbon group having 9 to 19 carbon atoms which may have a hydroxyl group at the 1-position, which includes the steps of reacting an aminodiol represented by the following general formula (1): STR2 wherein R1 is the same as R1 in general formula (3) with a fatty acid alkyl ester represented by the following general formula (2): wherein R2 is the same as R2 in general formula (3) and R3 represents a lower alkyl group, in a reaction system comprising an alcoholic solvent and in the presence of a basic catalyst, said reacting step forming a lower alcohol as a by-product; and removing the lower alcohol formed during the reaction from the reaction system.
