Disclosed and claimed herein are e,e,e malonic acid/acetic acid tri-adducts of buckminsterfullerene of the general formula C.sub.60R.sub.3, wherein each R is independently selected from groups of the formula .dbd.CR.sup.1R.sup.2 wherein each R.sup.1 and R.sup.2 is independently selected from the group consisting of --H and --COOH, provided, however, that at least one of the R.sup.1's and R.sup.2's is a hydrogen. Processes for preparing and uses of the same for treating neuronal injury and for life-extension are also disclosed and claimed herein.