title: (+)-Phorboxazole A synthetic studies. A highly convergent, second generation total synthesis of (+)-phorboxazole A.
abstract: [structure: see text] A second generation total synthesis of the potent antitumor agent (+)-phorboxazole A (1) has been achieved. The cornerstone of this approach comprises a more convergent strategy, involving late-stage Stille union of a fully elaborated C(1-28) macrocycle with a C(29-46) side chain. The second generation synthesis entails the longest linear sequence of 24 steps, with an overall yield of 4.2%.
authors.affiliation: Department of Chemistry, Monell Chemical Senses Center, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA. smithab@sas.upenn.edu
authors.forename: Amos B
authors.initials: AB
authors.lastname: Smith
authors.forename: Thomas M
authors.initials: TM
authors.lastname: Razler
authors.forename: Jeffrey P
authors.initials: JP
authors.lastname: Ciavarri
authors.forename: Tomoyasu
authors.initials: T
authors.lastname: Hirose
authors.forename: Tomoyasu
authors.initials: T
authors.lastname: Ishikawa
mesh_terms: D006576:Heterocyclic Compounds, 4 or More Rings / Q000138:chemical synthesis* / Q000737:chemistry; D015394:Molecular Structure; D010080:Oxazoles / Q000138:chemical synthesis* / Q000737:chemistry
chemical_list: D006576:Heterocyclic Compounds, 4 or More Rings; D010080:Oxazoles; C408887:phorboxazole A