喜树碱

4-ethyl-8-methoxy-6-(trimethylsilyl)-1H-pyrano[3,4-c]pyridine

(S)-(+)-4-ethyl-4-hydroxy-8-methoxy-6-(trimethylsilyl)-1,4-dihydro-3H-pyrano[3,4-c]pyridin-3-one

1-trimethylsilyloxy-2-ethyl-1,3-butadiene

(E)-3-ethoxy-1-(9-ethyl-3-hydroxy-7-methoxy-1H-pyrrolo[3,4-b]quinolin-2(3H)-yl)prop-2-en-1-one