The first total synthesis of exochelin MN is described along with rationally designed analogues. The required L-threo-beta-hydroxyamino acidcomponents were constructed using either Sharpless asymmetric aminohydroxylation reactions or an aldol reaction of imidazolidinone 19. A newconcise procedure for the preparation of the constituent six-membered cyclic hydroxamate was developed. In addition, a