Synthesis of (2S)-O-phosphohomoserine and its C-2 deuteriated and C-3 chirally deuteriated isotopomers: probes for the pyridoxal phosphate-dependent threonine synthase reaction
作者:Fiona Barclay、Ewan Chrystal、David Gani
DOI:10.1039/p19960000683
日期:——
A short efficient synthesis of the threonine synthase substrate (2S)-O-phosphohomoserine and its C-2 deuteriated and C-3 chirally deuteriated isotopomers is described. The synthetic route also provides access to (2S)-homoserine and its C-2 deuteriated and C-3 chirally deuteriated isotopomers in high yield. Preliminary deuterium isotope effect determinations performed using the deuteriated (2S)-O-phosphohomoserines and threonine synthase from E. coli indicate that the removal of protons from both C-2 and C-3 is kinetically important.
描述了苏氨酸合成酶底物(2S)-O-磷酸高丝氨酸及其 C-2 去氘代和 C-3 手性去氘代异构体的简短高效合成方法。该合成路线还能以高产率获得 (2S)-homoserine 及其 C-2 deuteriated 和 C-3 chirally deuteriated 异构体。利用大肠杆菌中的脱氘 (2S)-O- 磷酸高丝氨酸和苏氨酸合成酶进行的初步氘同位素效应测定表明,从 C-2 和 C-3 中去除质子在动力学上非常重要。