Abstract
Oxidative degradations of acronycine with
nitric acid and ozone have been studied. Hot concentrated nitric acid converts
noracronycine and nordihydroacronycine into l-methyl-4-quinolone-3-carboxylic
acid while nitric acid on acronycine under the same conditions yields first
trinitroacronycine and finally 6.nitro-l-methyl-4-quinolone- 3-carboxylic acid.
Ozonolysis of acronycine gives a phenolic aldehyde, C16H13O4N,
which has been deduced to be 1- or
3-formyl-2-hydroxy-4-methoxy-10-methylacridone (V or VII). These data together
with information supplied in Part II indicate acronycine to be either
4-methoxy-2',2',l0-trimethyl-α-pyrano-(5',6'-1,2)acrid-5-one (IV) or
4-methoxy-2',2',10-trimethyl-α-pyrano.(5',6'-3,2)acrid-5-one (VI).
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