| 发明名称 |
Process for the preparation of 17 beta -substituted-4-aza-5 alpha -androstan-3-one derivatives |
| 摘要 |
PCT No. PCT/EP92/01620 Sec. 371 Date Mar. 19, 1993 Sec. 102(e) Date Mar. 19, 1993 PCT Filed Jul. 16, 1992.The preparation of a compound of formula (I)R1 is hydrogen or C1-C6 alkyl; each of R2 and R3 is, independently, hydrogen, C1-C6 alkyl, C5 or C6 cycloalkyl or C6-C9 cycloalkylalkyl; R4 is hydrogen, C1-C6 alkyl, C3- or C6cycloalkyl, C6-C9 cycloalkylalkyl or aryl; and the symbol represents a single or a double bond; by a multi-step process is disclosed.
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| 申请公布号 |
US5342948(A) |
申请公布日期 |
1994.08.30 |
| 申请号 |
US19930027164 |
申请日期 |
1993.03.19 |
| 申请人 |
FARMITALIA CARLO ERBA S.R.L. |
发明人 |
PANZERI, ACHILLE;CERIANI, LUCIO;GRIGGI, PIERLUIGI;NESI, MARCELLA |
| 分类号 |
A61K8/00;A61K8/49;A61K31/56;A61P13/02;A61P15/00;A61P17/00;A61P43/00;A61Q5/00;C07J3/00;C07J41/00;C07J73/00;(IPC1-7):C07D221/02 |
主分类号 |
A61K8/00 |
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