Macamides: A review of structures, isolation, therapeutics and prospects.

Macamides, the major bioactive compounds of Lepidium meyenii (Walp.) or Maca, are a unique class of non-polar, long chain fatty acid N-benzylamides with fertility-enhancing, neuroprotective, neuro-modulatory, anti-fatigue and anti-osteoporosis effects. However, the relationship between the structures and pharmacological effects of macamides have not been established so far. In addition, little is known regarding their biosynthetic pathways and the mechanisms underlying the biological activities. In this review, we have summarized the methods currently used for the extraction, purification and synthesis of macamides. Their pharmacological effects, clinical prospects and biomedical applications have also been discussed. Current data strongly suggest that macamides are a promising bio-active agent, and further studies are warranted to elucidate their mechanisms of action.