References
- Turner , R. B. and Woodward , R. B. 1953 . “ Chapter 16 ” . In The Alkaloids , Edited by: Manske , R. H. F. Vol. III , New York, N. Y. : Academic Press .
- Uskokovic , M. R. and Grethe , G. 1973 . “ Chapter 5 ” . In The Alkaloids , Edited by: Manske , R. H. F. Vol. XIV , New York, N. Y. : Academic Press .
- Gutzwiller , J. and Uskokovic , M. 1970 . J. Amer. Chem. Soc. , 92 : 204
- Gutzwiller , J. , Pizzolato , G. and Uskokovic , M. 1971 . J. Amer. Chem. Soc. , 93 : 5907
- Uskokovic , M. , Gutzwiller , J. and Henderson , T. 1970 . J. Amer. Chem. Soc. , 92 : 203
- Uskokovic , M. , Reese , C. , Lee , H. L. , Grethe , G. and Gutzwiller , J. 1971 . J. Amer. Chem. Soc. , 93 : 5902
- Stork , G. and McElvain , S. M. 1946 . J. Amer. Chem. Soc. , 68 : 1053
- von Doering , W. E. and Rhoads , S. J. 1951 . J. Amer. Chem. Soc. , 73 : 3082
- As cited in reference 3
- Augustine , R. L. , Gustavsen , A. J. , Wanat , S. F. , Pattison , I. C. , Houghton , K. S. and Koletar , G. 1973 . J. Org. Chem. , 38 : 3004
- Details of the reaction conditions and workup procedure are essenntially those reported in ref. 6 for the preparation of the 3-ethyl compound
- Satisfactory analytical data has been obtained for all new compounds
- Sundberg , R. J. and Holcombe , F. O. Jr. 1969 . J. Org. Chem. , 34 : 3273
- We thank Dr. M. Uskokovic for kindly supplying us with the reference spectra