Seven new binary carbazole alkaloids, named murrastifoline-A (1), -B (2), -C (3), and -D (4) and chrestifoline-A (5), -B (6), and -C (7), were isolated from root bark of Murraya euckrestifotia hayata (Rutaceae) collected in Taiwan and their structures were elucidated by means of spectral methods. © 1990, The Pharmaceutical Society of Japan. All rights reserved.