(1R,2S,5S)-6,6-dimethyl-3-[(2-methylpropan-2-yl)oxycarbonyl]-3-azabicyclo[3.1.0]hexane-2-carboxylic acid

3-tert-butyl 2-methyl (1R,2S,5S)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2,3-dicarboxylate

(1R,2S,5S)-3-[(2S)-2-[[叔丁氧羰基]氨基]-3,3-二甲基-1-氧代丁基]-6,6-二甲基-3-氮杂双环[3.1.0]己烷-2-羧酸甲酯

tert-butyl (1R,2S,5S)-2-(hydroxymethyl)-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-3-carboxylate

L-叔亮氨酸