C++11 delegated constructor and typedef

I try to compile some code in visual studio 2013 (community edition), but I have problems : the following code refuse to compile.

struct X
{
    X(double y);
};

typedef X Z;
struct Y : public Z
{
    using Z::Z;            
};

The problem is the line using Z::Z. It gives me an error C2039: 'Z' : is not a member of 'X'

Is this code valid ? or is this a bug ?