Dr. Constantine E. Anagnostopoulos and his wife, Malika, sold their three-bedroom, four bath at 213 N. Bemiston Ave. in Clayton for $1.3 million to Elizabeth Osborn on Sept. 24.

The Anagnostopouloses paid $875,000 for the home in Oct. 1998.

Dr. Anagnostopoulos is on the Board of Directors for Deltagen Inc., a California-based drug discovery tools and biopharmaceutical services company.

He is a former managing partner with Gateway Associates - a St. Louis-based venture capital firm - and he formerly served as the Chairman of the Board of Directors for Kereos, Inc., a cancer and cardiovascular prevention and research company based in St. Louis.

He is also a retired corporate officer of the agricultural giant Monsanto Company. He served in various roles for Monsanto, including the Director of Research and Development and the CEO of Monsanto Europe-Africa.

He earned his Ph.D. in Organic Chemistry from Harvard University and is a graduate of the Executive Program in Business Administration at Columbia University.

Clayton home sales have dropped 24 percent through September 2007 vs. the same period in 2006. The median price over that time period, however, has rose $102,000 from $498,000 in 2006 to $600,000 so far this year.

Median sales prices have risen steadily in Clayton since 2002, according to BlockShopper Metrics.

Address: 213 N. Bemiston Avenue
Buyer(s): Elizabeth G Osborn (Trust)
Seller(s): Constantin E Anagnostopoulos Trust, Constantine E Anagnostopoulos (Revocable Trust) and Malika S Anagnostopoulos Trust
Sale date: Sep. 24, 2007