发明名称 |
FORFARANDE FOR FRAMSTELLNING AV C 22-ALKYL-DERIVAT AV DIGOXIN |
摘要 |
1449804 Digoxin derivatives BOEHRINGER MANNHEIM GmbH 9 April 1975 [13 April 1974 12 July 1974] 14596/75 Heading C2U The invention comprises a process for preparing 22-(C 1-4 alkyl) digoxins, by dissolving digoxin (in which the 3<SP>111</SP> and 4<SP>111</SP>-hydroxyl groups are optionally protected) in a strongly polar aprotic solvent (e.g. DMF or dimethyl sulphoxide), reacting with an alkyl iodide in the presence of NaH, and where necessary removing the protecting group(s). 22-Methyldigoxin 3<SP>111</SP>,4<SP>111</SP>-acetonide is prepared as an intermediate in the above process. |
申请公布号 |
SE396392(B) |
申请公布日期 |
1977.09.19 |
申请号 |
SE19750004005 |
申请日期 |
1975.04.08 |
申请人 |
* BOEHRINGER MANNHEIM GMBH |
发明人 |
W * VOIGTLENDER;F * KAISER;W * SCHAUMANN;K * STACH |
分类号 |
C07J19/00;(IPC1-7):07J19/00 |
主分类号 |
C07J19/00 |
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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