* Total stakes valued at $663 mln
* CPPIB buys 45 pct stake in McGraw-Hill building
* JV for 45 pct in 600 Lexington Ave
* Properties valued at total of $1.45 bln
May 10 (Reuters) - SL Green Realty Corp (SLG.N) said it sold ownership interests in two commercial office properties in midtown Manhattan to Canada Pension Plan Investment Board (CPPIB) for $663 million.
CPPIB, which invests funds from the Canada Pension Plan, has acquired a 45 percent stake in 1221 Avenue of the Americas, or the McGraw-Hill building, for $576 million, including debt and working capital.
SL Green, which owns and manages Manhattan properties, said it has also formed a joint venture with CPPIB for the 45 percent stake it currently owns in 600 Lexington Avenue, for $87 million.
The properties are currently valued at over $1.45 billion. (Reporting by Abhiram Nandakumar in Bangalore; Editing by Unnikrishnan Nair)