Calling variables instead of values

I have this:

A=1; B=2; C=3;

x = [2 3 1]

I want to call x1 as:

x1 = 
    B     C     A

I can call individual values, but I don't know how to call them as variables.

Answer 1

[Andrei Bobrov]

xc = num2cell(x)
[B C A]= xc{:}

ADD

x = [2 3 1]
xc = {'A' 'B' 'C'}
x1 = xc(x)

[Will]

I don't think that's what I'm looking for.

I need to associate A, B and C to [2 3 1] and output [B C A]

And also, I was using 2 3 1 and B C A as an example. I must take in many more numbers if needed.

[Jan]

@Will: What does "[B C A]" exactly mean? Is it a cell string, a string or a symbolic expression?