| 摘要 |
1441554 Pyrazino-isoquinoline derivatives MERCK PATENT GmbH 12 Nov 1974 [17 Dec 1973] 48861/74 Heading C2C Novel compounds I (in which--COR is an acyl radical containing up to 26 carbon atoms derived from an unsubstituted or substituted aliphatic, cycloaliphatic cycloalkylaliphatic, araliphatic or heterocyclic carboxylic acid or a substituted aromatic carboxylic acid) are preparedby cyclizing a compound II (in which X is F, Cl, Br, I, mesyloxy or 6-10 C arysulphonyloxy); by reduction of a compound III (broken line indicates an optional double bond) or by replacement of one substituent R by another substituent R by known methods. Anthelmintic compositions comprise a compound I together with a suitable carrier or diluent. |
