Pure Appl. Chem., 1989, Vol. 61, No. 3, pp. 385-388
doi:10.1351/pac198961030385
Synthetic studies on nogalamycin congeners. Total syntheses of (+)-nogarene, (+)-7-con-O-methylnogarol, and their related compounds
F. Matsuda, M. Kawasaki and S. Terashima