Keep him away from the puppies (is this a new litter ?) unless you are close by. Older dogs do have to train pups - make 'em into streetwise kids - but some older ones also suffer resentment.
You need to identify what causes him to bite and avoid these situations. Are the pups too 'in his face' and not letting him alone, are they trying to pinch his food or is it just jealousy ? Is this the first litter you have bred (I'm assuming you did breed this litter) and therefore possibly his first experience of puppies in 'his' domain.
Is Mom still around ? Cos I'd expect her to protect her pups from this aggression.
Give your older boy LOTS of one-to-one attention, try to rebuild his confidence and make him realise you still adore HIM and that these little interlopers will soon be gone (that is if you bred the litter and intend to sell the pups).
So many questions, and so much more information you really need to provide.
In my (considerable) experience, older dogs will tolerate and train pups. Mostly you get one 'uncle' who takes over the training when the pups are up on their feet. I take the barricades off the whelping box (in an alcove beside the Aga) once the pups are up on their feet most of the time even if they do fall over. Once they have the run of the kitchen the older ones join in games but make it clear when enough is enough and I make sure they get their rest from the invaders by returning them to the bed-box and putting up the barrier..