I find that to be untrue. In my case, I had a M.S. before applying, and still had to take nearly 2 years of required coursework. It depends on the program, but I have not heard of any U.S. program that will accept a B.S. and not have required classes.*

Then go to the U.K. or the majority of the commonwealth. Required coursework is not a necessary part of doctoral research in many, many departments of these universities.