Focus the folders area in save dialogs

Is there a shortcut to focus the folders area in the save dialogs? I've found the followings shorcuts, but I would like to be able to just focus the currently selected folder.

⌘+D Changes focus to your Desktop

⌘+Shift+A Changes focus to your Applications directory

⌘+Shift+H Changes focus to your Home directory

Source: http://ift.tt/1AFB9S0