Brostallicin or Doxorubicin as First-Line Therapy in Treating Patients With Relapsed, Refractory, or Metastatic Soft Tissue Sarcoma

RATIONALE: Drugs used in chemotherapy, such as brostallicin and doxorubicin, work in different ways to stop the growth of tumor cells, either by killing the cells or by stopping them from dividing. PURPOSE: This randomized phase II trial is studying the side effects and how well brostallicin or doxorubicin works as first-line therapy in treating patients with relapsed, refractory, or metastatic soft tissue sarcoma.