发明名称 |
Process for preparing alpha-(1,4) linked oligosaccharide |
摘要 |
The present invention relates to a continuous process for preparing optically pure (S)-3,4-dihydroxybutyric acid derivatives expressed by the following Formula 1 and more particularly, to the continuous process which enables preparing optically pure (S)-3,4-dihydroxybutyric acid derivatives economically in large quantities, by:(a) Preparing alpha-(1,4) linked oligosaccharide having adequate sugar distribution by reacting amylopectin which is easily available from natural product with enzyme under a specific condition; and(b) Performing oxidatioin by running basic anion exchange resin with an oxidant to give (S)-3,4-dihydroxybutyric acid-anion exchange resin complex, dissociating the (S)-3,4-dihydroxybutyric acid from anion exchange resin complex and esterification sequentially under a specific condition. wherein Represents linear or branched alkyl group with 1~5 carbon atoms. |
申请公布号 |
AU5067899(A) |
申请公布日期 |
2000.02.14 |
申请号 |
AU19990050678 |
申请日期 |
1999.07.23 |
申请人 |
SAMSUNG FINE CHEMICALS CO., LTD. |
发明人 |
YOUNGMI PARK;JONGPIL CHUN;YIK-HAENG CHO;KYOUNGROK ROH;HOSUNG YU;DAEIL HWANG |
分类号 |
C07C69/675;C07B53/00;C07B61/00;C07C51/285;C07C67/08;C07C69/003;C07D307/32;C07D307/33;C12P7/42;C12P7/62;C12P17/04;C12P19/14;C12P19/16;C12P19/22 |
主分类号 |
C07C69/675 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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