A. R1 = N(CH3)2, R3 = N(CH3)2, R2 = H: (4R,4aS,5aR,12aS)-4,7-bis(dimethylamino)-1,4,4a,5,5a, 6,11,12a-oktahydro-3,10,12,12a-tetrahydroxy-1,11-dioxonaftacen-2-karboxamid (4-epiminocyklin),
A. R1 = N(CH3)2, R3 = N(CH3)2, R2 = H: (4R,4aS,5aR,12aS)-4,7-bis(dimethylamino)-1,4,4a,5,5a, 6,11,12a-oktahydro-3,10,12,12a-tetrahydroxy-1,11-dioxonaftacen-2-karboxamid (4-epiminocyklin),