title: Letter: Synthetic approaches to adriamycin. Degradation of daunorubicin to nonasymmetric tetracyclic ketone and refunctionalization of the A-ring to adriamycin.
mesh_terms: D003500:Cyclization; D003630:Daunorubicin; D004317:Doxorubicin / Q000138:chemical synthesis*; D007659:Ketones; D008722:Methods
chemical_list: D007659:Ketones; D004317:Doxorubicin; D003630:Daunorubicin