This Die Bahn site has train schedules:
There is a direct (no changes) TGV train departing 08:24 from Paris EST and arriving in Zurich at 12:58...duration 4 hours 34 minutes
We took the night train from Paris to Zurich and missed so much scenery. We would not do that again.
There are trains departing Zurich at 13:32 and at 14:00 for Lauterbrunnen....2 train changes 1 at Bern and the other at Interlaken OST to Lauterbrunnen. From there you can go to Murren or Gimmelwald.
We took those trains and it was a pleasant trip.
Here is the SBB link:
Hope this helps.