ethyl 2-(5-isobutyryl-1-oxo-2,5-diazaspiro[3.4]octan-2-yl)acetate

2-(5-isobutyryl-1-oxo-2,5-diazaspiro[3.4]octan-2-yl)acetic acid

(2S,3R)-2-(2-(5-((2S,3R)-2-amino-3-hydroxybutanoyl)-1-oxo-2,5-diazaspiro[3.4]octan-2-yl)acetamido)-3-hydroxybutanamide TFA salt

N-((2S,3R)-3-hydroxy-1-oxo-1-(pyrrolidin-1-yl)butan-2-yl)-2-(5-(1-methyl1H-1,2,4-triazole-5-carbonyl)-1-oxo-2,5-diazaspiro[3.4]octan-2-yl)acetamide

methyl 3-oxooctahydro-9S-pyrrolo[1,2-a]pyrazine-1S-carboxylate