Towards stable analogues of inositol phosphates: stereoselective syntheses of (α,α-difluoromethyl)phosphonic acid (DFMPA)-containing cyclohexanes
作者:Afshan H. Butt、B. M. Kariuki、Jonathan M. Percy、Neil S. Spencer
DOI:10.1039/b200560n
日期:2002.3.21
DielsâAlder and conjugate addition reactions were used to prepare precursors to a range of fully functionalised and deoxy inositol phosphate analogues.
Synthesis of new carbocyclic phosphonate analogs of dideoxypurine nucleotides
作者:D. Wolff-Kugel、S. Halazy
DOI:10.1016/0040-4039(91)80164-2
日期:1991.10
Three newcarbocyclicphosphonate derivatives of adenine 3a, 3b and 3c has been prepared by “purinoselenenylation” from functionalized cyclopentenyl derivatives.
Conjugate addition reactions of a (diethoxyphosphinoyl)difluoromethyl anion equivalent to acyclic and cyclic vinyl sulfones
作者:K. Blades、D. Lapôtre、J.M. Percy
DOI:10.1016/s0040-4039(97)01313-0
日期:1997.8
Cerium-mediated conjugateadditions of (diethoxyphosphinoyl)difluoromethyllithium to cyclic vinylsulfones proceeded smoothly; reduction afforded the products of formal alkylation, attaching the difluoromethylene phosphonate group to a secondary carbon atom. With acyclic vinylsulfones, the addition was considerably less efficient and deprotonation competed with addition. Addition failed completely
Synthesis of isosteric and isopolar phosphonate substrate analogues designed as inhibitors for phosphatidylinositol-specific phospholipase C from bacillus cereus
作者:Thottumkara K. Vinod、O. Hayes Griffith、John F.W. Keana
DOI:10.1016/0040-4039(94)85358-4
日期:1994.9
The synthesis of the isosteric phosphonate substrate analogue inhibitor 2 and the isopolar difluoromethylenephosphonate inhibitor 3 for phosphatidyinositol-specific phospholipaseC (PI-PLC) from Bacillus cereus is described. The key step involved a trichloroacetonitrile mediated condensation between the inositol derivative 8 and the corresponding phosphonic acids 16 and 18 to establish the central
Synthesis and Characterization of Intermediate and Transition-State Analogue Inhibitors of γ-Glutamyl Peptide Ligases
作者:Makoto INOUE、Jun HIRATAKE、Kanzo SAKATA
DOI:10.1271/bbb.63.2248
日期:1999.1
The phosphonodifluoromethyl ketone and phosphonofluoridate derivatives of L-glutamic acid were synthesized and characterized as analogues of the γ-glutamyl phosphate intermediate and the tetrahedral transition state, respectively, for the inhibition of γ-glutamylcysteine synthetase and glutamine synthetase. The former served as a poor inhibitor of both enzymes, but the latter inhibited glutamine synthetase with a Ki of 59 μM and partially inactivated the enzyme in an NH3- and ATP-dependent manner.
合成了L-谷氨酸的膦酰二氟甲基酮和膦酰氟酸盐衍生物,并分别将其表征为γ-谷氨酰磷酸中间体和四面体过渡态的类似物,用于抑制γ-谷氨酰半胱氨酸合成酶和谷氨酰胺合成酶。前者对这两种酶的抑制效果较差,但后者对谷氨酰胺合成酶的抑制 Ki 为 59 μM,并以依赖 NH3 和 ATP 的方式使酶部分失活。