A leading real-estate company, Mitsubishi Estate, was reported recently to have 720 concerns, 400 from overseas, on its waiting list.

Mitsubishi Estate was the last company to sell fixed-rate bonds.

But the most recent filing indicates that Mitsubishi Estate may no longer be willing to accept the mounting losses.

Mitsubishi Estate, meanwhile, said little about the problem, even though it had been engaged in detailed discussions with the mortgage holder for months.

It is a subtle shift in mood that perhaps influenced Mitsubishi Estate.

"Just about our first call went to Mitsubishi Estate," said a professional involved in the deal.

Mitsubishi Estate will acquire 51 percent of Rockefeller Group at first.

A few years later it sold 80 percent of the property itself to Mitsubishi Estate in Tokyo for $1.4 billion.

It was built by Mitsubishi Estates in 1994.

The two partnerships, in turn, are owned by Mitsubishi Estate and the Rockefeller family.