| 摘要 |
The invention relates to fodder additives, fodder concentrates and fodders with weight gain increasing and fodder utilization improving effects, which contain as active agent a new compound of the general formula (I), <IMAGE> (I) The invention also relates to a process for the preparation of compounds having the general formula (I) by reacting a compound of the general formula (II), <IMAGE> (II) wherein Z is oxygen atom or represents two lower alkoxy groups and R1 is as defined above, with a compound of the general formula (III), <IMAGE> (III) wherein Q, A, B and n are as defined above, and, if desired, converting the resulting compound of the general formula (I) into another compound of the general formula (I) by well-known reactions. The compounds of the general formula (I) are new. |
