Anti-aliasing filter as notch and lowpass
This in essence is exactly how an elliptic filter works. 

Most filter design packages that will design 'normal' Butterworth and Chebychev filters will also design elliptic filters, these have a Cheby passband, with added zeroes in the stopband. 

If you try to randomly add zeroes to an existing low pass response, you probably won't get the response you want. If you do the proper elliptic design, then you get to choose the passband ripple and the stopband attenuation.