| 发明名称 |
17 alpha -chloroethynyl pregnane derivatives |
| 摘要 |
Known pregnane derivatives are prepared by esterificiation of known androstane derivatives to give new ester of Formula III <IMAGE> (III) wherein in each case symbolizes a single bond or a double bond, n is 1 or 2, R1 is hydrogen or methyl, R2 is hydrogen or formyl, and R3 is chlorine, hydroxy or an alkanoyloxy group of up to 6 carbon atoms, and reaction of the latter with Ag(I) and formic acid.
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| 申请公布号 |
US4708823(A) |
申请公布日期 |
1987.11.24 |
| 申请号 |
US19850776923 |
申请日期 |
1985.09.17 |
| 申请人 |
SCHERING AKTIENGESELLSCHAFT |
发明人 |
HOFMEISTER, HELMUT;ANNEN, KLAUS;LAURENT, HENRY;WIECHERT, RUDOLF |
| 分类号 |
B01J23/50;C07B61/00;C07J1/00;C07J5/00;C07J7/00;C07J9/00;C07J41/00;C07J63/00;C07J75/00;(IPC1-7):C07J1/00 |
主分类号 |
B01J23/50 |
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