title: A new sesquiterpenoid coumarin from Ferula assafoetida.
abstract: The gum resin of Ferula assafoetida Linn. afforded one new sesquiterpene, asimafoetida 1 and three known sesquiterpenoid coumarins. The structure has been established from extensive 2D NMR spectral studies as 7'-[7-(1R,3S)-5-Hydroxy-6,6-dimethyl-2-methylene-cyclohexyl]-9-methyl-9-pentenyl]oxy]-2H-1-benzopyran-2-one. The other three known compounds are ferulic acid, farnesiferol A and farnesiferol C.
authors.affiliation: Centre of Advanced Studies on Natural Products including Organic Synthesis, Department of Chemistry, Calcutta University, Kolkata, India.
authors.forename: Anindita
authors.initials: A
authors.lastname: Ghosh
authors.forename: Avijit
authors.initials: A
authors.lastname: Banerji
authors.forename: Suvra
authors.initials: S
authors.lastname: Mandal
authors.forename: Julie
authors.initials: J
authors.lastname: Banerji
mesh_terms: D003374:Coumarins / Q000032:analysis*; D005309:Ferula / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy / Q000379:methods; D010946:Plants, Medicinal / Q000737:chemistry; D012717:Sesquiterpenes / Q000032:analysis*
chemical_list: D003374:Coumarins; D012717:Sesquiterpenes