BOSTON-Clarion Partners has acquired two Boston office buildings in the city’s Back Bay section for $87.1 million. The real estate investment manager says it bought the properties on behalf of a separate account client.

Located at 535-545 Boylston St., the two 13-story buildings, which are 92% leased, directly face Copley Square, with views of Trinity Church and the city’s Financial District. Tenants include Back Bay Life Strategies and Oxford Biosciences. Upgrades at the buildings, which total 184,222 square feet, were completed in 2009.

“Clarion has consistently been a major presence in the Boston office market over the past twenty years,” Clarion Partners managing director Mark Weld said in a prepared statement. “This acquisition is further evidence of our continued confidence not only in the city as a whole, but specifically the Back Bay submarket, which we view as one of the strongest in the country.”