Boston Properties Inc. BXP, the Massachusetts-based real estate investment trust ("REIT"), announced the defeasance of mortgage loan collateralized by 100 & 200 Clarendon Street in Boston, MA. Previously, the REIT had revealed its plans to seek repayment or refinancing options for its 2016 and 2017 debt maturities, carrying interest rate higher than the market rate, in order to save future interests. The recent defeasance is in sync with its current strategies.