Sorry, no. However, you can probably rig something up using stock plugins, depending on what it is you're trying to accomplish. Side-chainable multibands are a fairly recent development, and for good reason: for decades nobody actually felt they needed one. I still don't (but I'd probably find a use for it if I had one).
Maybe if you described what kinds of tasks you plan to use such a plugin for, others could suggest alternate ways to accomplish the same end. It's at least worth exploring before you give Waves a hundred bucks.