Sorcery, XR (1) Disintegrate deals X damage to target creature or player. That creature can't be regenerated this turn. If the creature would be put into a graveyard this turn, remove it from the game instead.
Illus. Anson Maddocks
The "can't regenerate" is an effect of Disintegrate and not an effect of the damage. So it works even if the damage is prevented or redirected away. If redirected, the damage does not take this effect with it. [WotC Rules Team 1994/02/07]
Disintegrated creatures do not go to the graveyard at all before leaving the game. They do not trigger abilities which happen due to a creature going to the graveyard. [WotC Rules Team 1994/09/15]