(4) NK Richtmyer and C. 5. Hudson, ibid., 68, 2534 (1936). it seems likely that only the trans- isomer, 2, 3, 5-tri-0-benzoyl-PD-ribosyl bromide, undergoes acyl migration on hydrolysis; barring participation of the benzoyloxy group at C5, a the cis-isomer, 2, 3, 5-tri-O-benzoyl-aD- ribosy1 bromide, should undergo hydrolysis without rearrangement. Unfortunately the halide I has not, as yet, been obtained in crystalline form and so its anomeric nature remains ...
