(1S,2S,3R,4R,1'S)-(-)-Ethyl 3-(1'-Acetylamino-2'-ethyl)butyl-4-amino-2-hydroxycyclo-pentan-1-carboxylate Trifluoroacetate 生成
(1R,3R,4R,1'S)-(-)-Ethyl 3-(1'-acetylamino-2'-ethyl)butyl-4-aminocyclopentan-1-carboxylate 、
(1R,3R,4R,1'S)-(-)-Ethyl 3-(1'-acetylamino-2'-ethyl)butyl-4-tert-butoxycarbonyl-amino-cyclopentan-1-carboxylate