FOERFARANDE FOER FRAMSTAELLNING AV TERAPEUTISKT ANVAENDBARA EROLINDERIVAT OCH DERAS SYRAADDITIONSSALTER

摘要

A compound of formula I I wherein R1 is n-propyl, R2 is hydrogen or alkyl(C1-3), R3 is alkyl(C1-3), and R4 is hydrogen or methyl in free base form or in pharmaceutically acceptable acid addition salt form is useful as a prolactin secretion inhibitor, anti-parkinson and anti-depressant agent.