二碳酸二叔丁酯

2-amino-hex-5-enoic acid hydrochloride

(RS)-ethyl 2 N-(tert-butoxycarbonyl)-2-amino-5-hexenoate

methyl 2-[(tert-butoxycarbonyl)amino]hex-5-enoate

ethyl 2-N-(diphenylmethyleneamino)hex-5-enoate