(2013/04/13)
(7R,8AS)-7-hydroxy-1,2,3,4,6,7,8,8a-octahydro-pyrrolo[1,2-a]-pyrazine
(6S,8R)-4-benzyl-8-hydroxy-1,4-diazabicyclo<4.3.0>nonane
(7R,8aS)-2-benzyl-7-hydroxyhexahydropyrrolo[1,2-a]pyrazine-1,4-dione
(2S,4R)-methyl 1-(2-chloroacetyl)-4-hydroxypyrrolidine-2-carboxylate
4R-4-hydroxyproline