Exhibit 1

JOINT FILING AGREEMENT

In accordance with Rule 13d-1(k)(1) under the Securities Exchange Act of 1934, as amended, the persons named below agree to the joint filing on behalf of each of them of a Statement on Schedule 13D and any amendments to it with respect to the Common Shares, par value $0.10 per share, of Developers Diversified Realty Corporation and further agree that this Joint Filing Agreement be included as an Exhibit to those joint filings.

Dated: May 15, 2009

/s/ KG CURA Vermögensverwaltung G.m.b.H. & Co., by power of attorney  

By:  Dr. Thomas Finne 

For: Alexander Otto 

/s/ KG CURA Vermögensverwaltung G.m.b.H. & Co., by power of attorney  

By:  Dr. Thomas Finne 

For: Katharina Otto-Bernstein 

/s/ KG CURA Vermögensverwaltung G.m.b.H. & Co., by power of attorney  

By:  Dr. Thomas Finne 

For: Dr. Michael Otto 

/s/ KG CURA Vermögensverwaltung G.m.b.H. & Co., by power of attorney  

By:  Dr. Thomas Finne 

For: Janina Vater