1957 年 77 巻 6 号 p. 673-675
It has recently been found that glucosone methylphenylhydrazone-2, whose formation was reported in the preceeding paper, should be corrected to D-glucosone methylphenylhydrazone-1, since 1-methyl-1-phenylhydrazine is bonded to C1-position of D-glucosone. Consequently, the bonding position of 1-methyl-1-phenyl hydrazine in various derivatives of this compound is also corrected to the C1-position of the sugar. Examination of the mode of bonding of the sugar and hydrazine at C1-position of these derivatives suggested -CH2-NH-N< bonding, such as that of a sugar and amine in the Amadori rearrangement product, rather than a hydrazone bonding, -CH-N=N<, but details are now under investigation.