C - Chemistry – Metallurgy – 12 – P
Patent
C - Chemistry, Metallurgy
12
P
C12P 41/00 (2006.01) C07C 51/00 (2006.01) C07D 307/33 (2006.01) C12P 7/42 (2006.01) C12P 17/04 (2006.01) C12P 19/14 (2006.01) C12P 19/22 (2006.01)
Patent
CA 2338752
The present invention relates to a process for preparing optically pure (S)- 3,4-dihydroxybutyric acid derivatives expressed by Formula (1) and more particularly, to a process that enables preparing optically pure (S)-3,4- dihydroxybutyric acid derivatives economically in large quantities, by: (a) Preparing .alpha.-(1,4)-linked oligosaccharide with adequate sugar distribution by reacting amylopectin which is easily available from natural product with enzyme under a specific condition; and (b) performing oxidation and esterification sequentially under a specific condition. In Formula (1), R represents linear or branched alkyl group with 15 carbon atoms.
La présente invention concerne un procédé de préparation de dérivés d'acide (S)-3,4-dihydroxybutyrique optiquement pures représentés par la formule (1). Plus particulièrement, l'invention concerne un procédé permettant de préparer des dérivés d'acide (S)-3,4-dihydroxybutyrique en grande quantité, consistant à: (a) préparer un alpha-oligosaccharide lié en position (1,4) avec une distribution de sucre appropriée en faisant réagir de l'amylopectine, pouvant s'obtenir facilement à partir de produits naturels, avec une enzyme dans des conditions spécifiques; et (b) réaliser l'oxydation et l'estérification dans des conditions spécifiques, R représentant un groupe alkyle linéaire ou ramifié comportant 1?5 atomes de carbone.
Cho Yik-Haeng
Chun Jong Pil
Hwang Dae Il
Park Young Mi
Roh Kyoung Rok
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
Samsung Fine Chemicals Co. Ltd.
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