127199-38-6
7-(S)-amino-5-[1(R)-phenylethyl]-4-oxo-5-azaspiro[2.4]heptane
→
~81%
127199-41-1
7-(S)-amino-5-[1(R)-phenylethyl]-5-azaspiro[2.4]heptane
127254-12-0
西他沙星
127199-45-5
(7S)-5-氮杂螺[2.4]庚烷-7-基氨基甲酸叔丁酯