1991 Volume 39 Issue 10 Pages 2525-2528
In a further study of the constituents of stem bark of Murraya euchrestifolia HAYATA collected in Taiwan, five new monomeric carbazoles named murrayaline-B (1), -C (2) and -D (3), pyrayafoline-E (5) and euchrestine-E (7), one carbazolequinone named murrayaquinone-E (9), and two dimeric carbazoles named bismurrayafoline-C (11) and -D (12) were isolated along with known carbazoles. The structures of new alkaloids were elucidated by spectrometric and/or chemical methods. The new monomeric carbazoles were found to have 2-oxygenated 3-C-substituted carbazole nuclei and the new dimeric carbazoles to have symmetrical structures containing a 1-oxygenated 3-methylcarbazole skeleton.
