I'm not convinced that anti-seize compound is the way to go here. There's no harm in applying a little, but I wonder if it is the right compound for the job.
Anti-seize compound is usually to prevent hot metal parts from fusing together due to heat.
However, brake discs will typically get stuck due to rust, so the proper remedy would be to minimize or prevent the surface of the rotor from exposure to water or moisture.
To this effect, I'd imagine it is more effective to apply a coat of high-temp paint to the mating surface of the rotor prior to installation than to apply anti-seize compound, since (I expect) moisture can still make its way in past the anti-seize compound.