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Paper | Regular issue | Vol 38, No. 10, 1994, pp.2219-2229
Published online, 1st January, 1970
DOI: 10.3987/COM-94-6819
Sesquiterpene Pyridine Alkaloids from Maytenus chuchuhuasca

Osamu Shirota, Akiko Otsuka, Hiroshi Morita, Koichi Takeya, and Hideji Itokawa*

*Tokyo University of Pharmacy and Life Science, 1432-1 Horinouchi, Hachioji, Tokyo 192-0392, Japan


Structural elucidations of seven novel sesquiterpene pyridine alkaloids, chuchuhuanines E-1 (1), E-II (2), E-III (3), E-IV (4), E-V (5), W-I (6) and 4-deoxyeuonymine (7), which were isolated along with seven known alkaloids from root barks of Maytenus chuchuhuasca Raymond-Hamet et Colas (Celastraceae), are presented. Their structures with a novel dihydro-β-agarofuran type sesquiterpene core, linking several ester moieties and including a fifteen or sixteen membered macrocyclic diester ring system, were elucidated by mainly spectroscopic methods.