20-deethyl-2,16-didehydro-5,17-dioxo-1-(p-tolylsulfonyl)aspidospermidine

2-(phenylsulfinyl)acetyl-cis-4a-ethyl-2,3,4,4a,5,6,7,11c-octahydro-7-<(p-methoxyphenyl)sulfonyl>-1H-pyrido<3,2-c>carbazole

(+/-)-1-ethyl-2-cyclohexene-1-propanol acetate

3,4-dihydro-2H-5-ethylpyridine-1-carboxylic acid benzyl ester