In this work has been studied the metabolites found in the marine alga Bostrychia calliptera to come from the Buenaventura bay. One new irregular monoterpene and a derivate from p-coumaric acid have been isolated from fraction of methylene chloride. The structures elucidated correspond to ((6Z, 8E, 12Z)methyl-10-hydroxyhexadeca-6, 8, 12-trienoate) (1) and (E)-methyl-3-(4hydroxyphenil) acrilate (2) using Nuclear Magnetic Resonance (RMN) in one and two dimensions.