the present invention relates to compounds having the following structure : wherein r is h or oh and x + is protonated metformin , protonated arginine , protonated lysine and protonated meglumine . the invention also relates to intermediates used in the preparation of such compounds , processes for the preparation of such compounds and intermediates , pharmaceutical compositions comprising such compounds and the methods of treatment using such compounds as antidiabetic , antiobesity , and antisarcopenia agents .