C. Hoarau et al., A new synthetic approach to dioxoaporphines - Application to the synthesisof N-methylouregidione, EUR J ORG C, (13), 2001, pp. 2559-2567
A convenient and versatile short-step synthesis of dioxoaporphines, illustr
ated by the first total synthesis of the alkaloid N-methylouregidione (1c),
is described.