title: Divergent approach to the bisanthraquinone natural products: total synthesis of (S)-bisoranjidiol and derivatives from binaphtho-para-quinones.
abstract: The development of the first asymmetric synthesis of a chiral anthraquinone dimer is outlined, resulting in the first total synthesis of (S)-bisoranjidiol. Rather than a biomimetic dimerization retrosynthetic disconnection, the anthracenyl ring systems are generated after formation of the axially chiral binaphthalene framework. This synthetic strategy has enabled the synthesis of several analogues. Key features of the synthesis include the enantioselective coupling of a hindered 2-naphthol containing substitution peri to the site of C-C bond formation, the regioselective oxidation of 8,8'-hydroxylated binaphthols to binaphtho-para-quinones, and a tandem regioselective Diels-Alder/aromatization reaction.
authors.affiliation: Roy and Diana Vagelos Laboratories, Department of Chemistry, University of Pennsylvania, Philadelphia, Pennsylvania 19104-6323, USA.
authors.forename: Erin E
authors.initials: EE
authors.lastname: Podlesny
authors.forename: Marisa C
authors.initials: MC
authors.lastname: Kozlowski
mesh_terms: D000880:Anthraquinones / Q000138:chemical synthesis* / Q000737:chemistry*; D001688:Biological Products / Q000138:chemical synthesis* / Q000737:chemistry*; D002384:Catalysis; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D010084:Oxidation-Reduction; D011809:Quinones / Q000737:chemistry*; D013237:Stereoisomerism
chemical_list: C572380:(S)-bisoranjidiol; D000880:Anthraquinones; D001688:Biological Products; D011809:Quinones; C042834:9,10-anthraquinone