This descent by minor third is pretty common, and these four chords actually combine to create an octatonic collection:
A B♭ C D♭ E♭ E F♯ G
(If you aren't familiar with octatonic scales, it's just alternating half and whole steps.)
C minor pentatonic works okay, because
C E♭ G B♭ are in that octatonic collection.
F, however, is not, but
You can continue using C minor pentatonic, but using the above octatonic scale gives you more (and more accurate) options.
Furthermore, you can use that same scale over a different chord progression. Keep the roots the same, but change the qualities to dominant seventh, major triad, minor triad, half-diminished seventh, fully-diminished seventh, or mix and match. No matter what you do, as long as you keep the roots, it'll still create the same octatonic scale.
(Come on, that's cool!)