Dear StrykerScout,
At your current lvl, it will be very difficult to handle this task alone.
Without being able to pull the bodyguards seperately, and pick them off, you will continue to be pounded. (Alot of boss leaders have lower lvl's, but insane armor and health)
My suggestion is getting some help. Bring along a squad of friends to run interference while you handle the leader. If you are really not denting his health, then make sure at least one other person(preferably higher lvl than you) is also attacking leader while your squad covers your back and hanldes the bodyguards.
If you can't find any high lvl help, and only lvls close to yours are offering to lend a hand, then another way to even the odds is this.
Make sure each of your like lvl'ed companions has a droideka, or battledroid.
Make sure that their batteries are full, and call them right before battle with boss.
4 of you guys, with droideka's out should make quick work of any opposotion...
And having a medic along is key in any difficult fight at any lvl.
Hope this helps
Sincerely,
SouleSurvivor
Jedi Knight
Rebel Ace Pilot
(Former Sith)...lol