PRIOR CONCURRENT THERAPY: Biologic therapy: At least 4 weeks since prior immunotherapy Chemotherapy: At least 4 weeks since prior chemotherapy (6 weeks since nitrosoureas or mitomycin) No other concurrent chemotherapy Endocrine therapy: See Disease Characteristics No concurrent hormonal therapy (except replacement hormone therapy) Radiotherapy: At least 4 weeks since prior radiotherapy No prior radiotherapy to greater than 25% of the bone marrow No concurrent radiotherapy Surgery: No prior surgery that would impact the absorption of BMS-214662 Other: At least 4 weeks since prior investigational agents No other concurrent experimental anticancer medications No prior CYP3A4 substrates within 1 week before, during, and for at least 1 week after study