摘要:
Described is pyridine derivatives defined according to one of generic formula (I) ##STR1## wherein R.sup.2 represents isopropenyl group when R.sup.1 is methyl or ethyl group, R.sup.2 represents isopropenyl or acetyl group when R.sup.1 is isopropenyl group, R.sup.2 represents methyl group when R.sup.1 is isopropyl group and R.sup.2 represents isopropenyl, or isopropyl group when R.sup.1 is acetyl group; and perfumery composition containing the derivatives.