25Cisplastin: Cisplatin has established to be one of the efficient drugs for cancer, because it targets the multiple intracellular sites, in order to induce death in malignant cells. In order to increase the efficiency of cisplatin functional analog, other drugs are used for synthetic combination.26Curcumin:Curcuma longa L. the Depsipeptide order plants have long historical background which is not only dietary supplement and also it contains more valuable therapeutic compounds. Curcumin is a polyphenol compound act as broad spectrum antibiotics including anticancer and anti-inflammatory agent. The polyphenolic compound curcumin inhibits proliferation of

cancer cell line through regulating numerous intracellular signaling pathways by secreting of transcription factors (TF), growth factor receptors, cell surface adhesion molecules and protein kinases. It is now under the phase III trial in mainly by the treating of pancreatic cancer. Apigenin: The apigenin phytochemical constituents mainly induced cancer cell Decitabine death is mediated by androgen receptor. The prostate cancer cell line and breast cancer cell line was chosen as study models because they both express only ERb. The growth-inhibitory action of flavonoid based compound apigenin on these cancer cell

lines was studied in the presence or absence of small interfering RNA (siRNA) mediated down regulation of the receptor. 27 Pomiferin: Pomiferin is a prenylated isoflavonoid isolation from the plant Maclura pomifera. Isoflavones have been shown to possess a strong activity against anion exchange scavenging activity

and also to inhibit the oxidative DNA damage. Pomiferin has exposed pro-apoptotic effects by the results of DNA fragmentation. The translational studies, it was shown that pomiferin leads to down regulation of cytokeratins and to express of known tumor related proteins. Harringtonine: Harringtonine is chemical compound isolated from Chinese medicinal plant Cephalotaxus harringtonia. Harringtonine chemical entities have most promising activity against leukemic cancer cell line. The alkaloid nature of this compound induces the apoptosis these of cancer cells by inhibiting protein synthesis at the ribosome level. Homoharringtonine as a plant derived chemical compound under phase III clinical trials for the treatment of patients with affected chronic myeloid leukemia (CML). Salvicine: Salvicine used as the antiproliferative effects by acting as a non-intercalative topoisomerase II inhibitor that induces apoptosis. Salvicine has entered phase II clinical trials for the treatment of solid tumors in various ongoing researches. 28 Punicalagin: These punicalagin (plant: Punica granatum), shows inhibition of DNA topoisomerase II in transcription mechanisms. The chemical nature of punicalagin which is contains an endocyclic α,β-unsaturated ketone group, it was act more cytotoxic towards KB cells.