| 发明名称 |
FREMGANGSMAADE TIL FREMSTILLING AF LACTONDERIVATER |
| 摘要 |
<p>L-ascorbic acid 2-sulphate and salts thereof are prepared by treating L-ascorbic acid protected in the 5,6-positions with a salt of a tertiary amine with pyrosulphuric acid or fuming sulphuric acid, then cleaving off the protecting group and, if desired, converting the L-ascorbic acid 2-sulphate into a salt.</p> |
| 申请公布号 |
DK227188(A) |
申请公布日期 |
1988.11.05 |
| 申请号 |
DK19880002271 |
申请日期 |
1988.04.26 |
| 申请人 |
HOFFMANN-LA ROCHE & CO. AKTIENGESELLSCHAFT, F. |
发明人 |
PAULING, HORST;WEHRLI, CHRISTOF |
| 分类号 |
B01J27/02;B01J27/053;B01J31/02;C07D307/62;(IPC1-7):C07D307/62 |
主分类号 |
B01J27/02 |
| 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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