Nonetheless , two patent applications unveil that the amino group can be changed , i.e. replaced by a hydrazine .
Amino group is claimed that these compounds do not only act via DPP - 4 inhibition but also prevent diabetic vascular complications by acting as a radical scavenger .
Nonetheless , two patent applications unveil that the amino group can be changed , i.e. replaced by a hydrazine , but it is claimed that these compounds do not only act via DPP - 4 inhibition but also prevent diabetic vascular complications by acting as a radical scavenger .