The chemical reactions and pathways resulting in the formation of 1D-myo-inositol 1,2,3,4,5,6-hexakisphosphate, phytate, by a pathway using inositol 1,4,5-trisphosphate produced from phosphatidylinositol 4,5-biphosphate hydrolysis by phospholipase C.
phytate biosynthetic process, lipid-dependent