Highlight everything to left of asterisk* (Find&Replace)

My document has lines like:
1 some text * some more text
2 some text * some more text

I would like to Find all text that comes before the *, so I can highlight it. How can I Find that text?

.* is the pattern for arbitrary text as regular expression.
To sesrch for a asterix utself you have to quote it with
So try a search pattern like (.*)\*