How to find files with specific extensions, while excluding some names in the current directory only?

I want to **find** some files, in a non GNU environment - in the current directory only - with extension **\*.ext1** and **\*.ext2**, - but not **name1.\*** or **name2.\*** The following command works, but may be not efficient, because the shell expands ./* and **find** can get a huge list of files and directories. find ./* -prune \( -name '*ext1' -o -name '*ext2' \) -a ! \( -name 'name1*' -o -name 'name2*' \) **Update:** I'm working on AIX, there is no **-maxdepth** option.