发明名称 |
VERFAHREN ZUR HERSTELLUNG VON 1,8-DISUBSTITUIERTEN-1,3,4,9-TETRAHYDROPYRAN(3,4-B)-INDOL-1ESSIGSÄUREESTERN IN EINEM HYDROXYLHALTIGEN LÖSUNGSMITTEL |
摘要 |
<p>A process for the preparation of the esters of 1,8-disubstituted -1,3,4,9-tetrahydropyrano (3,4-b)-indole-1-acetic acid reacting 7-alkyltryptophol of Formula (II): with a beta -ketoester of formula (III), in a hydroxylic solvent, comprising at least one alkanol solvent having 1-4 carbon atoms, containing hydrogen chloride gas, and subsequently recovering the product of Formula (I) is delineated.</p> |
申请公布号 |
DE60013604(D1) |
申请公布日期 |
2004.10.14 |
申请号 |
DE2000613604 |
申请日期 |
2000.06.07 |
申请人 |
RANBAXY LABORATORIES, LTD. |
发明人 |
VIJAYARAGHAVAN, B.;RAMANA, V.;KHERA, BRIJ;KUMAR, NARESH |
分类号 |
C07D491/04;C07D491/052;(IPC1-7):C07D491/052 |
主分类号 |
C07D491/04 |
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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