Synthesis of a Phosphonate-Linked Aminoglycoside-Coenzyme A Bisubstrate and Use in Mechanistic Studies of an Enzyme Involved in Aminoglycoside Resistance
作者:Feng Gao、Xuxu Yan、Karine Auclair
DOI:10.1002/chem.200802172
日期:2009.2.16
Just five steps! The synthesis of a phosphonate‐linked aminoglycoside‐coenzyme A derivative (see scheme) that includes a Michael addition in water has been realized in just five steps.
只需五步!膦酸酯连接的氨基糖苷 - 辅酶 A 衍生物(见方案)的合成,包括在水中的迈克尔加成,仅用五个步骤就可以实现。
Asymmetric Synthesis of Aziridine 2-Phosphonates from Enantiopure Sulfinimines (<i>N</i>-Sulfinyl Imines). Synthesis of α-Amino Phosphonates
作者:Franklin A. Davis、Yongzhong Wu、Hongxing Yan、William McCoull、Kavirayani R. Prasad
DOI:10.1021/jo020707z
日期:2003.3.1
chloromethylphosphonate anions to enantiopure sulfinimines, has been developed for the asymmetric synthesis of aziridine 2-phosphonates. Best results involve cyclization of the syn and anti diastereomerically pure alpha-chloro-beta-amino phosphonates to cis- and trans-N-sulfinyl aziridine 2-phosphonates, respectively, with n-BuLi. A transition-state hypothesis is proposed wherein the chloromethylphosphonate
condensation of carbanions of α-chloro-α-lithiated phosphonates with carbonyl precursors gives direct access to α-chlorine-β-carbonyl phosphonates. The reactions with ethylformate, dimethylformamide, carboxylic esters, diethyl carbonates, diethyl oxalates etc. are discussed. In each case the intermediates have been identified.
Metalated methylenediphosphonate esters. Preparation, characterization and synthetic applications
作者:O.T. Quimby、J.D. Curry、D. Allan Nicholson、J.B. Prentice、C.H. Roy
DOI:10.1016/s0022-328x(00)88873-7
日期:1968.7
n-butyllithium to form the corresponding salts, M+[H(PO3R2)2], is described. These compounds were characterized by 31P and 1H NMR; their synthetic usefulness was demonstrated by the preparation of a variety of alkylates, R′CH(PO3R2)2, and by the preparation of mono and dihalo derivatives, XCH(PO3R2)2 and X2C(PO3R2)2, by direct halogenation. A superior method of halogenation of teraalkyl methylenediphosphonates
描述了亚甲基二膦酸四烷基酯与钠,钾,氢化钠和正丁基锂的金属化以形成相应的盐M + [ H(PO 3 R 2)2 ]。这些化合物的特征在于31 P和1 H NMR。通过制备各种烷基化物R'CH(PO 3 R 2)2,以及制备单和二卤代衍生物XCH(PO 3 R 2)2和X 2 C(PO 3)证明了它们的合成有用性。R 2)2,通过直接卤化。还描述了卤代亚甲基二膦酸四烷基酯的高级方法。金属化的亚甲基二膦酸四烷基酯与分子氧在甲苯溶液中的反应显示是复杂的。
A Convenient Selenium‐Linking Strategy for Traceless Solid‐Phase Synthesis of Diethyl 1‐Alkenephosphonates
作者:Shou‐Ri Sheng、Wei Zhou、Xiao‐Ling Liu、Cai‐Sheng Song
DOI:10.1081/scc-120028631
日期:2004.12.31
Abstract Treatment of a novel polymer‐supported α‐diethoxyphosphoryl methyl selenide with LDA followed by alkylation and oxidative deselenation efficiently afforded diethyl trans‐1‐alkenephosphonates in good yields and purities.