The syntheses of the four non-K-region trans-dihydrodiols of 7-methylbenz [c] acridine (2) are described. The trans-8, 9-and-10, ll-dihydrodiols 13 and 16 were prepared from 7-methyl- 8, 9, 10, 11-tetrahydrobenz [c] acridine (3) via the trans-8, 9-diacetoxy-7-methyl-8, 9, lO, ll- tetrahydrobenz [c] acridine (10) and its l0, ll-isomer (14) by selective benzylic bromination followed by dehydrobromination. The trans-tetrahydro diacetates were obtained through ...