| 摘要 |
8?-ERGOLINE I COMPOUNDS This invention provides new compounds of formula I, I wherein X is hydrogen, chlorine or bromine, R1 is methyl or ethyl, and R2 is CH2-CN, or a group NR3R4, wherein R3 is hydrogen or alkyl of 1 to 4 carbon atoms, and R4 is formyl, alkanoyl of 2 to 5 carbon atoms in the aggregate thereof, alkoxycarbonyl of 2 to 5 carbon atoms in the aggregate thereof, mono- to trihalogenalkoxycarbonyl of 3 to 5 carbon atoms in the aggregate thereof, the alkoxy radical of which is substituted by halogen in a position other than .alpha. to the oxygen, or the radical SO2R5, wherein R5 is alkyl of 1 to 4 carbon atoms, monoto tri-halogenalkyl of 1 to 4 carbon atoms, phenyl, pyridyl, phenyl monosubstituted by halogen or alkoxy of 1 to 4 carbon atoms, or a group NR6R7, wherein each of R6 and R7 is independently hydrogen or alkyl of 1 to 4 carbon atoms, or R6 and R7 together are one of the groups (CH2)n or (CH2)2-A-(CH2)2, wherein n is a number from 3 to 7, and A is oxygen, sulphur or nitrogen substituted by alkyl of 1 to 4 carbon atoms or phenyl, useful as prolactin secretion agents and antiparkinson agents. |
