1972 年 92 巻 4 号 p. 503-506
Methyl 2-(1-acetoxy-3-oxobutyl) phenylacetate (XII) and 2-(3-oxobutyl) phenylacetonitrile (XVIII), the model intermediates for the construction of the AB-ring system in anthracyclinones, were synthesized. Attempted cyclization of XII and XVIII under the condition according to the Brockmann's procedure was unsuccessful.