화합물 3 b - 8 에 대한 1 H NMR ( D 2 O ) : 0 . 91 ( m , peptide - H ) , 1 . 55 ( m , peptide - H ) , 2 . 13 ( m , peptide - H ) , 2 . 42 ( m , peptide - H ) , 2 . 52 ( m , 4 H , CH 2 CH 2 CONH ) , 2 . 61 ( m , peptide - H ) , 2 . 70 ( m , 12 H , P ( O ) ( N ( CH 3 ) 2 ) 2 ) , 3 . 33 ( tt , 2 H , C - 6 - H 2 ) , 4 . 53 ( m , peptide - H ) , 4 . 98 ( s , 1 H , C - 5 - H ) , 5 . 43 ( t , H , C - 4 - H 2 )