failed to import static on default classes

I see two related problems with simple static import on classes that suppose to be already be imported in namespace:

1) This failed running from a script:
import static Math.*; println(random())

org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed, D:\test.groovy: 1: unable to resolve class Math
@ line 1, column 1.
import static Math.*; println(random())
^

1 error

But this in a script will work:
import static java.lang.Math.*; println(random())

2) This failed running from a command line:
groovy -e "import static java.lang.Math.*; println(random())"
org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed, script_from_command_line: 1: unexpected token: ( @ line 1, column 22.
1 error