A former New York partner at Winston & Strawn, Jonathan S. Bristol, pleaded not guilty yesterday to charges of laundering more than $20 million through his escrow accounts in connection with an alleged multi-million dollar fraud run by Kenneth Starr, a financial advisor to celebrities.

Mr. Bristol, who was a partner at Winston & Strawn until June, shortly after Mr. Starr’s arrest, appeared before Southern District Magistrate Judge Henry Pittman. He was released on his signature but must post a $1 million personal recognizance bond co-signed by three financially responsible parties within a week. One condition for his release is that he undergo a mental health evaluation.