New carbazolequinones having dimethylpyran ring system, from Murraya euchrestifolia.
Chemical and Pharmaceutical Bulletin
1985.0
Abstract
The structures of pyrayaquinone-A (1) and -B (2), the first naturally occurring carbazolequinone alkaloids having a dimethylpyran ring system from Murraya euchrestifolia Hayata (Rutaceae), have been determined by spectral and synthetic experiments.