(4R,5R)-4-hydroxy-5-methylpyrrolidin-2-one

5(R)-methyl-4(S)-thiopyrrolidinone

3(R)-(tert-butyldimethylsilanyloxy)-3-[1-(1'(S)-α-methylbenzyl)-aziridin-2(R)-yl]-propionic acid tert-butyl ester

(3R,4R)-5-Acetoxy-3-hydroxy-4-((S)-1-phenyl-ethylamino)-pentanoic acid tert-butyl ester

3(R)-hydroxy-3-[1-(1'(S)-α-methylbenzyl)-aziridin-2(R)-yl]-propionic acid tert-butyl ester