title: A brief and convergent synthetic route to defucogilvocarcin M chromophore: the formal synthesis of WS-5995 A and C.
abstract: [reaction: see text] Densely substituted styryl sulfone 20 is shown to undergo double annulation with phthalide 21 to give, in one-pot operation and in excellent yield, the benzonaphthopyranone scaffold 22 of gilvocarcins.
authors.affiliation: Department of Chemistry, Indian Institute of Technology, Kharagpur, India.
authors.forename: Asit
authors.initials: A
authors.lastname: Patra
authors.forename: Pallab
authors.initials: P
authors.lastname: Pahari
authors.forename: Sutapa
authors.initials: S
authors.lastname: Ray
authors.forename: Dipakranjan
authors.initials: D
authors.lastname: Mal
mesh_terms: D000617:Aminoglycosides / Q000737:chemistry; D000900:Anti-Bacterial Agents / Q000138:chemical synthesis / Q000737:chemistry; D001578:Benzopyrans / Q000138:chemical synthesis / Q000737:chemistry; D003374:Coumarins / Q000138:chemical synthesis* / Q000737:chemistry; D018360:Crystallography, X-Ray; D015394:Molecular Structure; D013450:Sulfones / Q000737:chemistry
chemical_list: D000617:Aminoglycosides; D000900:Anti-Bacterial Agents; D001578:Benzopyrans; D003374:Coumarins; D013450:Sulfones; C416882:WS-5995 C; C496006:defucogilvocarcin M; C027838:WS-5995 A