Experiments in ca. 90% deuterated water in which (R) S-benzyl thioglycerate (1) is obtained in the presence of benzyl mercaptan in baker's yeast fermenting on D-mannose, D-glucose and D-fructose, respectively, gave rise to trideuterated materials. The extent of labelling at various positions and the stereochemistry depends upon the carbohydrate used as precursor, as shown by 2H NMR studies onto the
约在实验中。在面包酵母中分别在D-甘露糖,D-葡萄糖和D-果糖上发酵的苯甲硫醇存在下,在苄基硫醇存在下获得90%的氘化水(R)S-苄基硫代甘油酸酯(1)产生了三氘代物质。在不同位置标记的程度和立体化学取决于用作前体的碳水化合物,如对二氧戊环(12)-(14)的2 H NMR研究显示