Very interesting idea. It’s been ages since I took chemistry but I’m not sure what to break down. Glucose is C6H12O6. If we imagined nanobots that could break this down in any way (disregarding latent energy) the most obvious compounds are 6 water + benzene (which causes anemia) or 6 hydrogen and carbon monoxide molecules (which causes hypoxia).

We could follow traditional glycolysis but without a recapture method, would cells create excess ATP? What would that affect? Would it change the production of insulin and it’s affects on storing tryglicerides? I barely have enough knowledge here to ask questions let alone have answers.