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4. The synthesis of 8-methyl-4,6,6a,7,8,9-hexahydroindolo[4,3-fg]isoquinoline, the 9,10-didehydro-7-methyl-7-aza analogue of ergoline
5. The synthesis of 9,10-dimethyl-4,6,6a,7,8,9,10,10a-octahydroindolo[3,4-gh]isoquinoline, the 8,9-dimethyl-8-aza analogue of ergoline