E-Homocamptothecin

(-)-3-hydroxy-3-[2-methoxy-3-methoxymethoxymethyl-6-(trimethylsilanyl)pyridin-4-yl]pentanoic acid

(R)-3-Hydroxy-3-(2-methoxy-3-methoxymethoxymethyl-6-trimethylsilanyl-pyridin-4-yl)-pentanal

(+)-5-ethyl-5-hydroxy-3-iodo-2,5,6,9-tetrahydro-8-oxa-2-aza-benzocycloheptene-1,7-dione

(+)-5-ethyl-5-hydroxy-3-iodo-1-methoxy-5,9-dihydro-8-oxa-2-aza-benzocyclohepten-7(6H)-one