RIO DE JANEIRO, Feb. 27 (Xinhua) -- Two second-half goals in the space of four minutes were enough to give Argentine giants Boca Juniors a 2-1 away victory over Ecuador's Barcelona in their Copa Libertadores Group 1 clash in Guayaquil on Wednesday.

Argentina international forward Juan Manuel Martinez gave the visitors the lead with a 59th-minute strike from close range before Claudio Perez made it 2-0 by heading in Nicolas Colazo's free-kick.

Barcelona reduced the deficit in injury time when Michael Arroyo converted from the penalty spot after Juan Carlos Paredes was brought down by Clemente Rodriguez.

The victory was Boca's first for the season in Latin America's premier club competition and moves them to within a point of group leaders Nacional of Uruguay.

In other matches on Wednesday, defending champions Corinthians defeated Millonarios 2-0, Deportes Iquique overcame Emelec 2-0 and Fluminense secured a 2-1 away victory over Huachipato.