There are, to the best of my knowledge, only two other companies that develop downloadable (installed), consumer-level, income tax preparation software for business entities (and trusts/estates); neither one supports installing and running that software on a Mac.
One of those two companies does offer an online solution so you might want to investigate that option, but then you have to prepare your business return entirely online.
I would not hold out much hope that Intuit will support installing and running TurboTax Business on a Mac at any time in the near future (in fact, I would not hold out any hope).
EDIT: You might also consider Intuit's ProConnect:
https://proconnect.intuit.com/tax-online/pricing/
