Private equity giant Blackstone Group will sell five Boston properties to Oxford Properties Group of Toronto for $2.1 billion, the Wall Street Journal reported.

The deal comprises 3.2 million square feet of office space, including 100 High St. and 125 Summer St. in Boston.

Oxford will jointly purchase three other properties with J.P. Morgan Chase: 60 State St. and 225 Franklin St. in Boston and One Memorial Drive in Cambridge, the Journal reported.

Blackstone acquired the portfolio in 2007 during its acquisition of Equity Office Properties Trust.

The deal also involves Blackstone selling its stake in Rowes Wharf to its partner Morgan Stanley for an undisclosed price.

The Government of Singapore and a joint venture of Norway’s sovereign wealth fund and MetLife also bid on the Blackstone portfolio, the Journal reported.