chelerythrine
4-(2-N-carbobenzoxy-N-carbo-tert-butoxyaminoethyl)-2,3-dihydroxy-7-methoxy-2-methyl-2,3-dihydrobenzofuran
6-(2-N-carbobenzoxy-N-carbo-tert-butoxyaminoethyl)-2,3-dimethoxybenzaldehyde
4-(2-N-carbobenzoxy-N-carbo-tert-butoxyaminoethyl)-7-methoxy-2-methylbenzofuran
6-(2-N-carbobenzoxy-N-carbo-tert-butoxyaminoethyl)-2-hydroxy-3-methoxybenzaldehyde