NB23 、
γ-L-Glu-((S)-4-amino-2-hydroxybutyryl)-N-acetylcysteamine thioester 在
recombinant BtrH enzyme 作用下,
反应 6.0h,
以96%的产率得到N5-((S)-4-(((1R,2S,3R,4R,5S)-5-amino-4-(((3aR,4R,6R,7R,7aR)-7-amino-4-(aminomethyl)tetrahydro-4H-[1,3]dioxolo[4,5-c]pyran-6-yl)oxy)-2,3-dihydroxycyclohexyl)amino)-3-hydroxy-4-oxobutyl)-L-glutamine