1. This compound was prepared from anthraquinone 3a 23 as described for 1a. Yield 33 % (24 mg), a yellow solid;2H, m, 2CH
2. This compound was prepared from 4,11-dimethoxy-1H-naphtho[2,3-f]indole-5,10-dione 6a 25 as described for 1a. Yield 82% (75 mg), an orange solid, mp 280 �C (decomp;IR ? max 3349 (N-H), 1668 (C=O), 1588 (C=O), 1563, 1369, 1262