Euryjanicin A: a new cycloheptapeptide from the Caribbean marine sponge Prosuberites laughlini.
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.
Vicente
Jan
J
Department of Chemistry, University of Puerto Rico, P.O. Box 23346, UPR Station, San Juan, Puerto Rico 00931-3346.
Vera
Brunilda
B
Rodríguez
Abimael D
AD
Rodríguez-Escudero
Idaliz
I
Raptis
Raphael G
RG