it was found that the so far described variations in the content of colchicine alkaloids in leaves and flowers of colchicum autumnale l. and c. byzantinum ten . are due to enzymatic o-demethylation and degradation of colchicine ( i ) , n-deacetyl-n-formylcolchicine ( xi ) , and demecolcine ( xvii ) during drying and storing of the plant material .
C0009262
colchicine
C0011259
demecolcine