By the time your destructor is called, the destructor of inherited classes has already been called. Within constructors and destructors, the dynamic type of the object can effectively be considered to be the same as the static type. That is, when you call virtual methods from within your constructors/destructors it’s not the overriden versions of them that are called.
If SomePureVirtualMethod needs to be called at the destructor, then you will have to call it within the destructor of the class where the actual definition of the method you want is.