TROPANE ALKALOIDS OF HYOSCYAMUS-BOVEANUS, HYOSCYAMUS-DESERTORUM, HYOSCYAMUS-MUTICUS AND HYOSCYAMUS-ALBUS FROM EGYPT

The alkaloid composition of Hyoscyamus boveanus, H. desertorum, H. mut icus and H. albus was investigated by capillary GLC and GLC-mass spect rometry. Altogether 39 alkaloids of the tropane and pyrrolidine types were identified. Several alkaloids were found in the different species for the first time, e.g., 22 alkaloids in H. boveanus, 13 in H. deser torum, 24 in H. muticus and 4 in H. albus. 3 beta-Hyoscyamine, dehydro hyoscyamine, phyllalbine, 3 alpha-phenylacetyltropane, phenylacetylsco pine as well as phygrine and 2,3-diacetonyl-N-methyl-pyrrolidine are a pparently new for the genus Hyoscyamus. Alkaloid profiles and alkaloid contents of flowers, fruits, leaves, stems and roots were determined and their chemoecological functions discussed.