N-[苄氧羰基]-L-天冬氨酸 4-叔丁酯 1-甲酯

2-Methyl-2-propanyl 5-{[(benzyloxy)carbonyl]amino}pentanoate

1-苄基-1,5-二氢-吡咯-2-酮

1-benzyl-5-tert-butyloxypyrrolidin-2-one

1-benzyl-5-[4-(ethyloxycarbonyl)prop-2-enyl]pyrrolidin-2-one