See https://groups.google.com/forum/#!topic/pandoc-discuss/_VXtqihCyDU.
% pandoc -f latex -t native
\begin{tabular}{>{$}l<{$}>{$}l<{$} >{$}l<{$}}
\toprule
& f1 & f2 \\
\midrule
e & 0.5 & 4 \\
f & 0.5 & 5,5 \\
\bottomrule
\end{tabular}
^D
[Table [] [AlignLeft,AlignLeft,AlignLeft] [0.0,0.0,0.0]
[[Plain [Math InlineMath ""]]
,[Plain [Math InlineMath "f1"]]
,[Plain [Math InlineMath "f2"]]]
[[[Plain [Math InlineMath "e"]]
,[Plain [Math InlineMath "0.5"]]
,[Plain [Math InlineMath "4"]]]
,[[Plain [Math InlineMath "f"]]
,[Plain [Math InlineMath "0.5"]]
,[Plain [Math InlineMath "5,5"]]]]]