5-(Boc-amino)-1-pentanol may be used as non-limiting linkers.
Diane M. Yamamoto.; Donald A. Upson.; David K. Linn.; Victor J. Hruby. Synthesis of specific deuterium labeled tyrosine and phenylalanine derivatives and their use in the total synthesis of [8-arginine]vasopressin derivatives: the separation of diastereomeric [8-arginine]vasopressin derivatives by partition chromatography.J. Am. Chem. Soc. 1977, 99 (5),1564-1570 .