Improvements in or relating to ergoline derivatives
申请人:ELI LILLY AND COMPANY
公开号:EP0375297A2
公开(公告)日:1990-06-27
(8β)-N-heteroalkyl-1- alkyl-6-(substituted) ergoline-8-carboxamides of the formula
wherein:
R¹ is C₁-C₄ alkyl;
R² is allyl or C₁-C₄ straight chain alkyl;
R³ is hydrogen or C₁-C₄ straight chain alkyl;
R⁴ is pyridinyl or imidazolyl;
alk is a divalent organic radical derived from a straight or branched C₁-C₅ alkane; or
a pharmaceutically acceptable acid addition salt thereof.
The compounds are useful for blocking 5HT₂ receptors in mammals having an excess of serotonin centrally or peripherally