Docetaxel, Estramustine, and Exisulind in Treating Patients With Metastatic Prostate Cancer That Has Not Responded to Hormone Therapy

RATIONALE: Androgens can stimulate the growth of prostate cancer cells. Estramustine may fight prostate cancer by reducing the production of androgens. Exisulind may stop the growth of prostate cancer by stopping blood flow to the tumor. Drugs used in chemotherapy use different ways to stop tumor cells from dividing so they stop growing or die. Combining these therapies may kill more tumor cells. PURPOSE: Phase II trial to study the effectiveness of combining estramustine with exisulind and docetaxel in treating patients who have metastatic prostate cancer that has not responded to hormone therapy.