甲醇

喜树碱氮氧化物

(4S)-4-ethyl-3,4-dihydroxy-9-methoxy-3,4-dihydro-1H-pyrano[3',4':6,7]indolizino[1,2-b]quinolin-14(12H)-one

4-甲氧基苯异腈

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