(S)-4-Ethyl-4-hydroxy-6-iodo-3-oxo-7-(2-pentynyl)-1H-pyrano[3,4-c]-8-pyridone

[1,4'] Bipiperidinyl-1'-carboxylic acid 4-isonitrilo-phenylester

7-ethyl-10-[4-(1-piperidino)-1-piperidino]carbonyloxy-18,19-dehydrocamptothecin

对硝基苯基氯甲酸酯

4-nitrophenyl [1,4'-bipiperidine]-1'-carboxylate