title: A new, more efficient, and effective process for the synthesis of a key pentacyclic intermediate for production of ecteinascidin and phthalascidin antitumor agents.
abstract: An efficient process is described for the synthesis of 5, a key intermediate for the synthesis of the potent antitumor agents ecteinascidin 743 (1) and phthalascidin (2) from the readily available building blocks 3b and 4.
authors.affiliation: Department of Chemistry and Chemical Biology, Harvard University, Cambridge, Massachusetts 02138, USA.
authors.forename: E J
authors.initials: EJ
authors.lastname: Martinez
authors.forename: E J
authors.initials: EJ
authors.lastname: Corey
mesh_terms: D000970:Antineoplastic Agents / Q000138:chemical synthesis*; D002384:Catalysis; D004149:Dioxoles / Q000138:chemical synthesis*; D007546:Isoquinolines / Q000138:chemical synthesis*; D010797:Phthalimides / Q000138:chemical synthesis*; D044005:Tetrahydroisoquinolines; D000077606:Trabectedin
chemical_list: D000970:Antineoplastic Agents; D004149:Dioxoles; D007546:Isoquinolines; D010797:Phthalimides; D044005:Tetrahydroisoquinolines; C118707:phthalascidin; D000077606:Trabectedin