7-乙基-10-羟基喜树碱中间体

6-氨基苯并[1,3]二氧杂环戊烯-5-甲醛

(20S)-10,11-methylenedioxy-12-trimethylsilylcamptothecin

胡椒醛

(S)-4-ethyl-4-hydroxy-6-iodo-3-oxo-1H-pyrano[3,4-c]-8-pyridone