1. Selected recent examples of pyrroline synthesis: (a) Hercouet, A.; Neu, A.; Peyronel, J. F.; Carboni, B. Synlett. 2002, 829; (b) Green, M. P.; Prodger, J. C.; Sherlock, A. E.; Hayes, C. J. Org. Lett. 2001, 3, 3377; (c) Dieter, R. K.; Yu, H. Org. Lett. 2001, 3, 3855; (c) Breuil-Desvergnes, V.; Compain, P.; Vatèle, J.-M.; Goré, J. Tetrahedron Lett. 1999, 40, 5009; (d) Ishii, K.; Ohno, H.; Takemoto, Y.; Ibuka, T. Synlett. 1999, 228; (e) Schumacher, K. K.; Jiang, J.; Joullié, M. M.; Tetrahedron: Asymmetry 1998, 9, 47; (f) Ojima, I.; Zhu, J. W.; Vidal, E. S.; Kass, D. F. J. Am. Chem. Soc. 1998, 120, 6690; (g) Balasubramanian, T.; Hassner, A. Tetrahedron Lett. 1996, 37, 5755; (h) Burley, I.; Hewson, A. T. Tetrahedron Lett. 1994, 35, 7099.
2. A Novel Anionic Condensation, Fragmentation, and Elimination Reaction of Bicyclo[2.2.1]heptenone Ring Systems
3. Anionic ring expansion reactions of oxabicyclo[4.2.1]heptenones. An efficient entry into the carbon framework of oxygenated cembranoids
4. For reviews of pyrroline containing natural products see: (a) Mauger, A. B. J. Nat. Prod. 1996, 59, 1205;
5. (b) Daly, J. W. J. Nat. Prod. 1998, 61, 162.