Synthesis of a-D-glucose-2-C14,a-D-mannose-2-C14, and a-D-galactose-2-C14

Synthesis of D-Glucose-1-C14 and D-Mannose-1-C14

Heretofore, radiochemical yields of sugars position-labeled with carbon-14 have been only 5 to 10 percent. This paper reports an improved cyanohydrin synthesis, and the preparation of D-glucose-1-C and D-mannose-1-C from D-arabinose in yields of about 50 percent. Low yields in prior syntheses appear to have been due to several inefficient steps, and to the fact that extension of the carbon chai...

Ascorbic acid synthesis from D-glucose-2-C14 in the liver of the intact rat.

Evidence that glucose1 is the ultimate g-carbon precursor of ascorbic acid in the rat was first obtained by Jackel, Mosbach, Burns, and King (1). They administered uniformly labeled glucose-C** to Chloretone-treated rats and recovered uniformly labeled ascorbic acid from the urine. Subsequently, Horowitz, Doerschuk, and King (2) and Burns and Mosbach (3) discovered that when glucose-l-C14 was a...

Utilization of 1-C14-D-glucose by Torula utilis yeast.

A study of the utilization of l-C14-D-glucose by Torula utilis yeast was undertaken in an effort to clarify certain biosynthetic mechanisms operating in yeast metabolism. A recent publication by Gilvarg (1) describes the results obtained in a similar study with Xaccharomyces cerevisiae yeast. Since our methods and certain of our results differ from those of Gilvarg, a partial report of our obse...

An improved synthesis and preliminary biodistribution study of a Technetium-99m-labeled 2-amino-2-deoxy(thioacetyl)-D-glucose complex ([99mTc]-TA-DG) as a tumor imaging agent

  Introduction: This report describes the synthesis of 2-Amino-2-deoxy(S-benzoylthioacetyl)-D-glucose (S-Bz-TA-DG), radiolabeled with [99mTc(CO)3(OH2)3]+ complex with a procedure including deprotection of the benzoyl group, characterization by HPLC using a C18 reverse phase column and preliminary biodistribution study in normal ...

Conversion of DL-lactate-2-C14 or -3-C14 or pyruvate-2-C14 to blood glucose in humans: effects of diabetes, insulin, tolbutamide, and glucose load.