4,5,6,7-tetrahydroazepino[3,2,1-hi]indole-1-carboxylic acid ethyl ester

6-碘咪唑并[1,2-a]吡啶-2-甲酸乙酯

6-氰基咪唑并[1,2-a]吡啶-2-羧酸乙酯

2-(4-三氟甲基苯基)-噻唑-4-羧酸乙酯

(S)-2-吡咯烷-2-基噻唑-4-甲酸乙酯