(1S)- and (1R)-[1-2H]-sn-Glycerols (1a) and (1b) have been stereoselectively synthesized from 1,6-anhydro-β-D-galactopyranose and characterized by 1H and 13C n.m.r. spectroscopy.
Site-Specific Hydrogen Isotope Fractionation in the Biosynthesis of Glycerol
作者:Ben-Li Zhang、Stephan Buddrus、Maryvonne L. Martin
DOI:10.1006/bioo.1999.1145
日期:2000.2
natural isotope fractionation (SNIF-NMR) produced in the glycolytic conversion of glucose into ethanol and glycerol provides isotopic transfer coefficients, a ij , which relate sites in the products to sites j in the reactants. The isotopic connection between the carbon-bound hydrogens of glycerol and those of glucose and water in fermentation reactions carried out with Saccharomycescerevisiae has been
摘要 对位点特异性天然同位素分馏 (SNIF-NMR) 进行的核磁共振研究提供了将产物中的位点与反应物中的位点 j 相关联的同位素转移系数 aij。已经研究了在用酿酒酵母进行的发酵反应中甘油的碳键氢与葡萄糖和水的碳键氢之间的同位素连接。a ij 系数提供了有关甘油氢谱系、磷酸丙糖异构化和磷酸二羟丙酮还原为 3-磷酸甘油的相对速率、还原的立体定向性、分子内和分子间氢的百分比的机械信息在反应过程中发生转移,以及活跃的整体动力学和热力学同位素效应的数量级。因此,在甘油的位点 3 pro-R(立体特异性编号)和 H 6 pro-R 之间以及在较小程度上确定葡萄糖的 H 2 以及甘油的位点 3 pro-S 与 H 6 pro-S 和 H 之间的密切联系1葡萄糖。此外,甘油的位点 2 与水有很强的相关性,也部分与葡萄糖有关。作为介质组成或环境条件的函数的同位素转移系数值的可能变化能够检测到机械扰动,例
Mattesen, Donald S.; Kandil, Ali A.; Soundararajan, Raman, Journal of the American Chemical Society, 1990, vol. 112, # 10, p. 3964 - 3969
作者:Mattesen, Donald S.、Kandil, Ali A.、Soundararajan, Raman
DOI:——
日期:——
Nishida, Yoshihiro; Uzawa, Hirotaka; Hanada, Shizu, Agricultural and Biological Chemistry, 1989, vol. 53, # 9, p. 2319 - 2326