Archiv der Pharmazie p. 312 - 317 (1987)
Update date:2022-08-04
Topics:
Kucklaender, Uwe
Toeberich, Hildegard
Kuna, Krystina
The cycloheptindolones 3a and b are synthesized and transformed into the title compounds 6a,b,c.Methylation of 3a yields the free carboxylic acid 7 which reacts with acetic anhydride to yield the enol lactone 8.Treatment of 8 with methylamine gives the open-chain amide 9.
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