N. Modric et al., THE STRUCTURE OF A C5H4N4O4 SPECIES TRAPPED BY SILYLATION IN PEROXIDASE-MEDIATED URICOLYSIS - A REACTIVE RING-CONTRACTION TO SPIRODIHYDANTOIN, Bioorganic & medicinal chemistry letters, 4(14), 1994, pp. 1685-1686
Evidence for the species trapped by trimethylsilylation in peroxidase
mediated oxidation of urate (1) having the tetrakis(trimethylsilyl)spi
rodihydantoin (4b) structure is provided by its hydrolysis, reaction w
ith diazomethane, and actual isolation and identification of tetrameth
ylspirodihydantoin (4c).