Amino acid derivatives, {HEAD ~ medicaments} containing {TAIL ~ said compounds} and methods of producing them 
containing
Amino acid derivatives , { HEAD ~ medicaments } containing { TAIL ~ said compounds } and methods of producing them
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH