1. Atta-ur-Rahman, et al, Planta Med., 1994, 60, 377 (isol, or, jr, pmr, cmr, ms, struct)
2. Kurata, K. et al, Phytochemistry, 1993, 33, 155 (isol, pmr, ma)
3. Kurata, K. et al, Phytochemistry, 1993, 33, 155 (isol, pmr, cmr)
4. Kurata. K. et al, Phytochemistry, 1993. 33. 155 (isol, pmr, cmr)
5. Todd, J.S. et al, Tel. Lett., 1993, 34. 7689 (isol, pmr, cmr)