CBT-1® in Combination With Doxorubicin in Patients With Metastatic, Unresectable Sarcomas Who Previously Progressed on Doxorubicin

"CBT-1®, oral, on days 1-7 of each cycle 21-day cycle. Participants will be assigned to dose level of CBT-1®:~Dose level 1 - 50 mg/m2/day Dose level 2 - 100 mg/m2/day Dose level 3 - 150 mg/m2/day Dose level 4 - 200 mg/m2/day Dose level 5 - 250 mg/m2/day Dose level 6 - 300 mg/m2/day doxorubicin, 37.5 mg/m2, IV, on days 5 and 6 of each cycle Study treatment discontinued after 450 mg/m2 lifetime cumulative dose of doxorubicin reached or after 4-5 cycles completed."