Bryostatin-1 in Treating Patients With Recurrent Non-Hodgkin's Lymphoma

DISEASE CHARACTERISTICS: Histologically confirmed non-Hodgkin's lymphoma Working formulation low-, intermediate-, and high-grade histologies eligible Mantle cell and marginal zone lymphoma eligible Relapse after at least 1 doxorubicin-containing regimen required No more than 2 prior chemotherapy regimens One prior biologic therapy in addition to the 2 prior chemotherapy regimens allowed No prior bone marrow transplantation Ineligible for treatment on higher priority protocols Patients eligible for bone marrow transplantation may be treated to reduce tumor bulk Bidimensionally measurable disease required No history of primary or metastatic CNS disease PATIENT CHARACTERISTICS: Age: Any age Performance status: Zubrod 0-2 Life expectancy: Greater than 12 weeks Absolute neutrophil count at least 1,000/mm3 Platelet count at least 100,000/mm3 Bilirubin no greater than 1.8 mg/dL Transaminases no greater than 2.5 times normal Creatinine no greater than 1.5 mg/dL OR creatinine clearance greater than 70 mL/min No HIV antibody No serious intercurrent illness No pregnant or nursing women Effective contraception required of fertile patients throughout study and for 1 year thereafter PRIOR CONCURRENT THERAPY: -At least 4 weeks since prior therapy (6 weeks since mitomycin) and recovered