Seven new carbazole alkaloids, named pyrayafolines-B (1), -C (3), and -D (5), and euchrestines-A (7), -B (9), -C (10), and -D (11) were isolated from stem bark of Murraya euchrestifolia hayata (Rutaceae) collected in Taiwan and their structures were characterized by means of spectral methods. Pyrayafoline-B (1) was also synthesized. © 1991, The Pharmaceutical Society of Japan. All rights reserved.