Here's an idea off the top of my head:
Put your drug name in the middle of your mind map(e.g Pentoxyfilline). Put the different parts of the paper you need to include in your review around your central topic; eg. introduction, mechanism of action, clinical application, summary of literature etc. then add in the details you get from the different papers in the appropriate sections. So you MOA, intro, historical use etc will be similiar across all the papers, but some papers may have different applications, some papers may look at the different possible MOAs, some may be case reports; then add those details to your mind map in the appropriate section. In your summary you can draw conclusions on the contradictions, discrepancies or unknowns regarding the drug. Let it incubate first though. You'll drive yourself crazy if you try to do it all in a short period of time. Consider Endnote or similiar program to organize your references as you write.
Does that help?
Lisa