LITERATURE CITED
- Wang , X.-L , Hu , Y.-J , Shi , Z.-S and Pan , X.-F. 1993 . Synth. Commun. , 23 : 3249
- Ulubelen , A and Tuzlaci , E. 1990 . J. Nat. Prod. , 53 : 1597
- Desfossés , S. 1995 . Ph.D. thesis , Québec : Université Laval .
- For the general experiemental conditions and instruments used, see: Burnell R. H. Dumont N. Théberge N. J. Nat. Prod. 1993 56 1930
- Singh , A. K. , Bakshi , R. K. and Corey , E. J. 1987 . J. Am. Chem. Soc. , 109 : 6187
- In these tricyclic compounds the isopropyl methyls often show a slight diastereotopic separation.