(1R,2S,4R,5S)-3-氧杂-6-氮杂三环[3.2.1.02,4]辛烷-7-酮

(1S,3R)-3-氨基环戊羧酸

(-)-(1S,4r)-4-氨基环戊烯-2-羧酸

[(1R,4S)-4-(6-aminopurin-9-yl)cyclopent-2-en-1-yl]methanol

[(1s,Cis)-4-氨基-2-环戊烯-1-甲醇]