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ChemInform Abstract: Synthesis of Lysergic Acid Derivatives by Triple Radical Cyclization.
First published: April 16, 1991
Abstract
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ChemInform Abstract
The aldehyde (VII), prepared from the silyl ether (I) as shown in the reaction scheme, is coupled with the unsaturated amines (VIII) or (XI) to form the enamines (IX) or (XII). Subsequent free radical cyclization yields the tetracyclic amines (X) or (XIII).
