Yy. Chan et al., 3 SESQUITERPENES FROM THE ROOTS AND STEMS OF ARISTOLOCHIA-HETEROPHYLLA HEMSL WITH NOVEL SKELETONS, Tetrahedron letters, 39(44), 1998, pp. 8145-8148
Three novel skeleton sesquiterpenes, namely, madolin-F (1), -G (2a), a
nd -H (3), were isolated and characterised from the fresh roots and st
ems of Aristolochia heterophylla. Madolin-F belongs to a novel skeleto
n, normaaliane type. Madolin-G and -H were constructed from three- and
eleven-membered rings and named madolin type. (C) 1998 Published by E
lsevier Science Ltd. All rights reserved.