Please note that this figure is different than the one in your book and even the one that I put up on the board. It is however the most accurate figure that I can find. The important thing to remember is that all of these amino acids are catabolized into a metabolite that can be converted into a ketone body and that must eventually be converted into acetyl CoA. I will not ask you to match the exact amino acids with the exact catabolic product on any examination but you should know the ketogenic amino acids.
Figure showing catabolism of ketogenic amino acids.