Convert complex delete sql statement to Oracle?

I can do this statement in SQL Server but I can not figure out how to do it in Oracle. I just want it to delete records in Table1.

DELETE A
FROM TABLE1 A, TABLE2 B, TABLE3 C
WHERE A.MYKEY= B.MYKEY AND A.UNIQUEKEY = B.UNIQUEKEY

     AND B.MYKEY= C.MYKEY
     AND C.KEY1 NOT BETWEEN 'A' AND 'Z';