Processing files

Hi
I have the folowing input file, the file looks like below

sftp>
.
..
archive
x001_ameint*.zip
x001_ameint_1.zip
x001_ameint_2.zip
x001_REPORTS*.zip
x001_REPORTS_1.zip

sftp>

I want my output to look like this
x001_ameint*.zip
x001_ameint_1.zip
x001_ameint_2.zip

can you help me with a oneliner..

Thanks and Regards,
Ram.

grep '^x001_ameint' file > newfile