Hamamura et al. J. Med. Chem. 19(5) (1976), pp. 667-674. |
Divakar et al. J. Chem. Soc Perkins Trans I, (1982) (5), pp. 1171-1176. |
Gosselin et al. J. Med. Chem. 29 (1986), pp. 203-213. |
D. Wagner et al. "Preparation & synthetic utility . . . " The Jour. of Organic Chemistry, vol. 39 No. 1, Jan. 1974, pp. 24-30. |
Chemical Abstracts, vol. 86 No. 16, 18 Apr. 1977 #121712t. Columbus, Ohio, p. 583. |
H. P. M. Fromageot et al. "N.sup.4 O.sup.3', O.sup.5' -triacetyl . . . " Tetrahedron Letters, No. 29, 1966, Pergamon Press Ltd. (GB), pp. 20-25. |