<ul class="nav navbar-nav">
<li><a href="#">Menüpunkt</a></li>
<li class="dropdown">
<a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false">Dropdown <span class="caret"></span></a>
<ul class="dropdown-menu">
<li><a href="#">Unterpunkt 1</a></li>
<li><a href="#">Unterpunkt 2</a></li>
<li role="separator" class="divider"></li>
<li><a href="#">Unterpunkt 3</a></li>
</ul>
</li>
</ul>