All articles of this category Diels-Alder cyclization of N -benzyl- N ′-methoxycarbonyl-2-vinyltryptamine ( 5 ) with dimethyl maleate yielded a tetracyclic compound 7 [9-benzyl-3,4,10-trimethoxycarbonyl-1,2,3,4-tetrahydro-9a, 4a-(iminoethano)-9 H -carbazole] with structural features closely related with those of the indole alkaloid echitamine ( 4 ).
No takes yet. Share an insight, caveat, or question.
Lévy et al. (1992) studied this question.