title: Amaranzole A, a new N-imidazolyl steroid from Phorbas amaranthus.
abstract: An unprecedented 24-N-imidazolyl steroidal alkaloid, amaranzole A, was isolated from a tropical sponge, Phorbas amaranthus. The structure was solved by interpretation of MS, NMR, including a novel exciton-coupled CD spectrum due to an allyl imidazole, and comparison with model compounds.
authors.affiliation: Department of Chemistry and Biochemistry and SSPPS, University of California, San Diego, 9500 Gilman Drive, La Jolla, California 92093, USA.
authors.forename: Brandon I
authors.initials: BI
authors.lastname: Morinaka
authors.forename: Makoto N
authors.initials: MN
authors.lastname: Masuno
authors.forename: Joseph R
authors.initials: JR
authors.lastname: Pawlik
authors.forename: Tadeusz F
authors.initials: TF
authors.lastname: Molinski
mesh_terms: D027721:Amaranthus / Q000737:chemistry*; D002942:Circular Dichroism; D006863:Hydrogen-Ion Concentration; D007093:Imidazoles / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D015394:Molecular Structure; D013256:Steroids / Q000737:chemistry*
chemical_list: D007093:Imidazoles; D013256:Steroids; C526092:amaranzole A