Eleven strains of nine Penicillium species isolated from Syrian soils
were studied. Four strains (P. citrinum F-1069 and F-1079, P. fellutan
um F-1073, and P. melinii F-1070) produced alkaloids with the 5R,10S o
r 5S,10R configuration of the ergoline heterocycle and/or N-N'-bound i
ndole fragments. Two strains (P. chrysogenum F-1078 and P. fellutanum
F-1075) synthesized diketopiperazine alkaloids. Five strains P. carzes
cens F-1076, P. decumbens F-1077, P. simplicissimum F-1072, P. miczyns
kii F-1071, and P. quercetorum F-1074) did not produce alkaloids in no
ticeable amounts.