 P276-00 is specific Cdk4-D1 and Cdk1-B inhibitor. P276-00 exhibited significant tumour reduction in animal models with less adverse effects.Based on the results from various in-vitro studies, P276-00 could be a potential candidate as a new mechanism based drug for the treatment of cancer.This Phase I study will determine the Maximum Tolerated Dose,Dose Limiting Toxicity and efficacy of P 276-00 in patients with advanced Refractory neoplasms. 