Zurich Austria train

I am wondering about a direct train (no switch of trains en route) from Zurich to St. Anton. Can you provide any information on this? Thanks.

Direct trains with no change leave Zurich main station at 9.40, 13.40, 17.40, 21.40
There are no direct trains from Zurich airport. Trains with only 1 change leave Zurich airport
at 9.10, 13.10, 17.10, 21.10 (via Zurich main station)
and at 7.28, 18.28 (via Bregenz).
Have a look at http://www.sbb.ch/en/ (don't take the trains leaving Zurich airport at the minute ...20; the time for the change at Zurich main station would be too short)