- First synthesis of dimethyl-1H-isochromeno[3,4-b]carbazoles.
First synthesis of dimethyl-1H-isochromeno[3,4-b]carbazoles.
Natural product communications (2009-09-08)
Nguyen Manh Cuong, Heike Wilhelm, Andrea Porzel, Ludger Wessjohann
PMID19731593
ABSTRACT
The first synthesis of isochromene fused carbazols, (4aS, 13bR)-2,5,5-trimethyl-3,4,4a,5,8,13b-hexahydroisochromeno[3,4-b]carbazole (2) and its epi-isomer 3 by condensation of citral and 2-hydroxycarbazole using Ti(OEt)4 and MeAlC12 as catalysts is described.
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