title: Callynormine A, a new marine cyclic peptide of a novel class.
abstract: [structure: see text] A novel cyclic peptide, callynormine A, was isolated from the Kenyan marine sponge Callyspongia abnormis and its structure elucidated by interpretation of its NMR data and X-ray diffraction analysis. Callynormine A represents a new class of heterodetic cyclic peptides (designated endiamino peptides) possessing an alpha-amido-beta-aminoacrylamide cyclization functionality.
authors.affiliation: School of Chemistry and Department of Zoology, Tel-Aviv University, Ramat Aviv 69978, Israel.
authors.forename: Nelly
authors.initials: N
authors.lastname: Berer
authors.forename: Amira
authors.initials: A
authors.lastname: Rudi
authors.forename: Israel
authors.initials: I
authors.lastname: Goldberg
authors.forename: Yehuda
authors.initials: Y
authors.lastname: Benayahu
authors.forename: Yoel
authors.initials: Y
authors.lastname: Kashman
mesh_terms: D000818:Animals; D047128:Callyspongia / Q000737:chemistry*; D018360:Crystallography, X-Ray; D003500:Cyclization; D007630:Kenya; D015394:Molecular Structure; D019906:Nuclear Magnetic Resonance, Biomolecular; D010456:Peptides, Cyclic / Q000737:chemistry / Q000145:classification / Q000302:isolation & purification*; D013237:Stereoisomerism
chemical_list: D010456:Peptides, Cyclic; C495935:callynormine A