1. For Part 131 see: Wickramasinghe A., Reisch J. (1989) Pharmazie44: 736
2. Grundon M. F. (1988) Chemical and Biological Perspectives. In: Pelletier S. W. (ed.) Alkaloids, Vol. 6. Wiley, New York, p. 451
3. Glüsenkamp K. H., Büchi G. (1986) J. Org. Chem.51: 4481
4. Wu T. S., Furukawa H., Kuoh C. S., Hsu M. S. (1983) J. Chem. Soc. Perkin Trans.1: 1681
5. Wu T. S., Huang J. C., Jong T. T., Lai J. S., Kuoh C. S. (1988) Phytochemistry27: 585