Total syntheses of O4,9-dimethyl stealthins A and C

Article abstract of DOI:10.1016/S0040-4039(97)00793-4

O^4,9-dimethylstealthin A (11-amino-5-hydroxy-2-hydroxymethyl-4,9-dimethoxybenzo[b]fluoren-10-on e) and O^4,9-dimethylstealthin C (11-amino-5-hydroxy-4,9-dimethoxy-2-methyl-benzo[b]fluoren-10-one), methylated derivatives of radical scavengers produced by Streptomyces viridochromogenes, were synthesized using the Suzuki coupling reactions as a key step.