Synthesis of fluorinated analogues of the immunosuppressive drug FTY720
摘要:
Four fluorinated derivatives of the immunosuppressive drug FTY720 were synthesized by a convergent strategy, using the Sonogashira coupling as the key reaction to assemble the two major fragments. (C) 2011 Elsevier Ltd. All rights reserved.
Synthesis of fluorinated analogues of the immunosuppressive drug FTY720
摘要:
Four fluorinated derivatives of the immunosuppressive drug FTY720 were synthesized by a convergent strategy, using the Sonogashira coupling as the key reaction to assemble the two major fragments. (C) 2011 Elsevier Ltd. All rights reserved.
molecules were synthesized. Alkanoyl chlorides were allowed to react with iodobenzene in the presence of aluminumchloride to give the corresponding aromatic ketones. The reaction of the ketones with perfluoroalkyl iodides yielded 1-[4-(perfluoroalkyl)phenyl]-1-alkanones as intermediates. The intermediates were allowed to react with methanol in tetrahydrofuran in the presence of sodium borohydride
九种新型硫酸盐型杂化表面活性剂,C m F 2 m +1 C 6 H 4 CH(OSO 3 Na)C n H 2 n +1(F m PH n OS:m = 4,6,8; n = 3 ,5,7; C 6 H 4:p-亚苯基),在其分子中具有苯环。使烷酰氯在氯化铝的存在下与碘苯反应,得到相应的芳族酮。酮与全氟烷基碘的反应产生1- [4-(全氟烷基)苯基] -1-链烷酮作为中间体。在硼氢化钠存在下,使中间体与甲醇在四氢呋喃中反应,得到1- [4-(全氟烷基)苯基] -1-链烷醇。所需的杂化表面活性剂是通过使1- [4-(全氟烷基)苯基-1-链烷醇与三氧化硫/吡啶配合物在吡啶中反应,以及随后用氢氧化钠溶液中和产物而获得的。与常规杂化表面活性剂相比,C m F 2 m+1 C 6 H 4 COCH(SO 3 Na)C n H 2 n +1(F m H n S:m = 4,6; n = 2,4,6; C
Direct synthesis of haloaromatics from nitroarenes <i>via</i> a sequential one-pot Mo-catalyzed reduction/Sandmeyer reaction
作者:Raquel Hernández-Ruiz、Sara Gómez-Gil、María R. Pedrosa、Samuel Suárez-Pantiga、Roberto Sanz
DOI:10.1039/d3ob01187a
日期:——
Herein, we report the directsynthesis of a wide variety of functionalized aromatic bromides, chlorides, iodides, and fluorides from nitroarenes in a sequential one-pot operation. This protocol is based on an air- and moisture-tolerant dioxomolybdenum-catalyzed reduction of nitroaromatics, employing pinacol as a reducing agent, which enables subsequent diazotization and halogenation steps. This methodology
Five novel phosphate-type hybrid surfactants, CmF2m+1C6H4CH[OPO2(OC6H5)Na]CnH2n+1 (FmPHnPPhNa: m 4,6, 8; n = 3, 5), have been synthesized. When compared with sulfate-type hybrid surfactants, CmF2m+1C6H4CH(OSO3Na)CnH2n+1(C6H4 p-phenylene), the new hybrid surfactants were found to have comparable abilities to lower the surface tension of water. The critical micelle concentrations of FmPHnPPhNa followed Klevens' rule and their occupied areas per molecule increased with increasing m and n. Calcium hydroxyapatite (CaHAp) pellets modified with FmPH3PPhNa gave high hydro and lipophobic surfaces. The hybrid surfactants are expected to be useful as new dental reagents for oral hygiene. (C) 2004 Elsevier B.V. All rights reserved.
Synthesis of fluorinated analogues of the immunosuppressive drug FTY720
作者:Rebecca Y.Y. Ko、John C.K. Chu、Pauline Chiu
DOI:10.1016/j.tet.2011.02.028
日期:2011.4
Four fluorinated derivatives of the immunosuppressive drug FTY720 were synthesized by a convergent strategy, using the Sonogashira coupling as the key reaction to assemble the two major fragments. (C) 2011 Elsevier Ltd. All rights reserved.