l)-1H-indol-2-yl-3-C-14]-3,5-dihydroxy-6-heptenoic acid, sodium salt (
fluvastatin, 4) was prepared from [C-14] bromoacetyl chloride in a six
step synthesis with an overall radiochemical yield of 13.2%. This syn
thetic route was chosen because it puts the label in the metabolically
stable 3-position of the indole ring.