Preparations of Tryptamine-4,5-dinones, and Their Diels-Alder and Nucleophilic Addition Reactions
摘要:
Syntheses of Nb-acetyltryptamine-4,5-dione and (+/-)-Nb-acetyltryptophan-4,5-dione methyl ester are reported. They were excellent dienophiles as well as good electrophiles, and produced 6,7-disubstituted indoles in Diels-Alder reaction and various 7-substituted indoles with nucleophiles.
Nucleophilic Substitution Reaction of 1-Hydroxytryptophan and 1-Hydroxytryptamine Derivatives (Regioselective Syntheses of 5-Substituted Derivatives of Tryptophane and Tryptamine)
摘要:
Regioselective nucleophilic substitution at the 5-position of indole nucleus was observed in the reaction of 1-hydroxytryptophan and 1-hydroxytryptamine derivatives with acids, suggesting the mechanism of serotonin formation in the central nervous system.