Synthesis of trans-4,5-didehydro-DL-lysine (2,6-diaminohex-4-enoic acid) and of 4-oxo-L-lysine (2,6-diamino-4-oxohexanoic acid)
Abstract
The synthesis of two new amino-acids, trans-4,5-didehydro-DL-lysine and 4-oxo-L-lysine is described. Corrections are made concerning a previous report on the synthesis of cis- and trans-4,5-didehydrolysine. A cyclic hemiacetal structure is proposed for threo-NN-diphthaloyl-4-hydroxy-L-lysineamide.