title: Euryjanicin A: a new cycloheptapeptide from the Caribbean marine sponge Prosuberites laughlini.
abstract: A new proline-containing cycloheptapeptide, euryjanicin A (1), has been isolated from the marine sponge Prosuberites laughlini indigenous to Puerto Rico, and its structure established by an X-ray crystal structure determination. The absolute configuration of each amino acid residue was determined by Marfey's method.
authors.affiliation: Department of Chemistry, University of Puerto Rico, P.O. Box 23346, UPR Station, San Juan, Puerto Rico 00931-3346.
authors.forename: Jan
authors.initials: J
authors.lastname: Vicente
authors.forename: Brunilda
authors.initials: B
authors.lastname: Vera
authors.forename: Abimael D
authors.initials: AD
authors.lastname: Rodríguez
authors.forename: Idaliz
authors.initials: I
authors.lastname: Rodríguez-Escudero
authors.forename: Raphael G
authors.initials: RG
authors.lastname: Raptis