2',3'-EpoxyTCN 2',3'-Epoxytriciribine 8-[2,3-Epoxy-5-O-(2,5,5-trimethyl-3-dioxolan-4-one-2-yl)-.beta.-D-ribofuranosyl)-6-amino-4-methylpyrrolo[4,3,2-de]pyrimido[4,5-c]pyridazine AIDS-115810 AIDS115810