of a peptide of this invention which includes a furanoid sugar amino acid the compositions of this invention can be prepared using a peptide of this invention which includes a furanoid sugar amino acid in a preferred embodiment a physiologically effective excipient carrier diluent or solvent is used with the peptide to prepare a composition the invention also provides a method of treatment for human mammals or other animals suffering from cancer or other tumors the method may suitably comprise consist of or consist essentially of administering a therapeutically effective dose of the composition so as to inhibit the replication or growth of the tumor or cancer cells and or to kill inhibit the growth or inhibit the multiplication of cancer or tumor cells another aspect of the invention provides a method for treating a mammal including a human being afflicted with cancer the methods of this invention comprise consist essentially or consist of administering to a human or animal preferably a mammal a therapeutically effective peptide incorporating a furanoid sugar amino acid or a composition prepared using a peptide of this invention the peptides are especially effective in treating cancers of the ovary colon larynx pancreas oral cavity liver and endothelial cells the methods of this invention comprise consist of or consist essentially of administering systematically to the mammal a therapeutically effective amount of a peptide which includes a furanoid sugar amino acid or an effective amount of an active ingredient present in a composition that has been prepared using a peptide.