A novel approach to the indoloquinoline alkaloids cryptotackieine and cryptosanguinolentine by application of cyclization of o-vinylsubstituted arylheterocumulenes

Autor: Santiago Delgado, Pilar M. Fresneda, Pedro Molina
Rok vydání: 2001
Předmět:
Zdroj: Tetrahedron. 57:6197-6202
ISSN: 0040-4020
DOI: 10.1016/s0040-4020(01)00597-x
Popis: 1-Methyl-3-( o -azidophenyl)quinoline-2-one prepared by cyclization of the corresponding o -vinylsubstituted isocyanate under microwave irradiation is directly converted into cryptotackieine 1 by an intramolecular aza-Wittig reaction with trimethylphosphine; alternatively heating followed by reduction of the resulting indoloquinoline derivative provided cryptosanguinolentine 2 .
Databáze: OpenAIRE