Total synthesis of angucyclines. Part 16: 8-Deoxy-urdamycinone F, a nonaromatic angucycline antibiotic of the aquayamycin type

CAN oxidation (in two steps) of the hydroquinone dimethyl ether 1 gave a hydroxylation product 4, identical in substitution pattern and relative stereochemistry with the quinoid part of urdamycinone F (6).