Attempts to effect cyclization by incubating a-ethyl- tryptamine with formaldehyde under various different conditions of PH and temperature similar to that employed by Spath and Lederer14 gave no useful product. ... Summary A number of salts of 0- and y-carboline have been prepared and found to possess curariform ac- tivity. ROCHESTER, NEW YORK RECEIVED SEPTEMBER 14, 1949 ... [CONTRIBUTION FROM THE DEPARTMENT OF CHEMISTRY, UNIVERSITY ...