alias of class template

Consider an alias template like the A in the code below. Now let B be an alias template of A.

In the code below these class templates are used as template arguments for a struct C which is only specialized for one typename (A). clang -std=c++11 exists with error: implicit instantiation of undefined template 'C<B>' indicating that another specialization for B is needed.

template<int N>
using A = int;

template<int N>
using B = A<N>;

template<template<int> class I>
struct C;

template<>
struct C<A> {};

int main() {
  C<A> c;
  C<B> d; // clang error: implicit instantiation
}

Why (if even) is it that - despite not allowing specializations of aliases - A and B are treated as different class templates? Is there a workaround allowing me to rename a lengthy template without incurring this problem?