A direct synthetic approach to novel quadrupolar [14] azolophanes
摘要:
A convergent '3+1' synthesis allowed a simple entrance to the first examples of [l(4)]metaazolophanes 1 and [l(4)](meta-ortho)(2)azolophanes 2 built up from heterocyclic betaine subunits, illustrating a prototype of phanes constructed by both highly pi-excessive and highly pi-deficient heteroaromatic moieties linked in a 1,3-alternating fashion. Copyright (C) 1996 Elsevier Science Ltd
betaine subunit(s). These typify the first example of simple cyclophanes constructed out of both highly pi-excessive and highly pi-deficient heteroaromatic moieties linked in a 1,3-alternating fashion. The chemical reactivity of the quadrupolar heterophanes 1a and 1c toward electrophiles under neutral conditions corroborated their bis-betaine structure. The structural features of the bis-betaines 1
在事先选择用于构建四极杂物框架的甜菜碱结构单元后,报道了一种收敛的“ 3 + 1”合成策略,用于合成由杂环甜菜碱亚基组成的标题大环。这些代表了由以1,3-交替方式连接的高度pi过量和高度pi不足的杂芳族部分构成的简单环烷的第一个例子。在中性条件下,四极杂物1a和1c对亲电试剂的化学反应证实了它们的双甜菜碱结构。通过1H和13C NMR光谱和电喷雾电离质谱研究了双甜菜碱1,甜菜碱2 x PF6和5 x X以及相应的双官能[1(4)]杂三烷3 x 2X和4 x 2Cl的结构特征,
Proton ionizable 1H-1,2,4-triazole π-electron deficient cyclophanes as hosts and in [2]catenanes
作者:Susana Ramos、Ermitas Alcalde、J. Fraser Stoddart、Andrew J. P. White、David J. Williams、Lluïsa Pérez-García
DOI:10.1039/b815355h
日期:——
these π-acceptor cyclophanes are interlocked with (bis-p-phenylene-34-crown-10), as the π-electron rich polyether macrocycle. We also report on the full characterization of the cyclophanes and the [2]catenanes by electrospray massspectrometry (ESMS) and fastatombombardmentmassspectrometry (FABMS), X-ray crystallography of the [2]catenanes and dynamic 1H NMR spectroscopy. We reveal that the [2]catenane
质子可离子化部分(例如1 H -1,2,4-三唑环)在环烷和π-供体/π-受体[2]邻苯二酚中的掺入被探索为通过固有的质子互变异构现象诱导化学转换的工具。或化学去质子化 牢记这一点,在本文中,我们描述了模板指导的两个四阳离子环烷的合成,其中包含两个通过一个3,5-双(亚甲基)-1 H -1,2,4-三唑单元和一个p连接的联吡啶鎓单元-二甲苯基单元或两个3,5-双(亚甲基)-1 H -1,2,4-三唑单元,以及两个[2]邻苯二甲基的模板指导合成,其中这些π-受体环烯与( bis-(对-亚苯基-34-冠-10),作为富含π电子的聚醚大环。我们还报告了通过电喷雾质谱(ESMS)和快速原子轰击质谱(FABMS),[2] catenanes的X射线晶体学和动态1对环烷和[2]邻苯二酚的完整表征。1 H NMR光谱。我们揭示,在固态中,结合有一个三唑环的[2]环烷在固态中以氢键交联的对映体对堆叠的形式
作者:Ermitas Alcalde、Montserrat Alemany、Lluïsa Pérez-García、Matías L. Rodriguez
DOI:10.1039/c39950001239
日期:——
The N-diphenylmethyl derivative 4 is the immediate precursor of the N-substituted dipolar [14]metaheterophane 3, and allows the convenient synthesis of the unsubstituted macrocycle 5, which can be transformed into the quadrupolar or dipolar heterophanes 1 and 2; the molecular structures of 1 and 2 were confirmed by single-crystal X-ray analysis.
AROMATIC AND HETEROAROMATIC COMPOUNDS USEFUL IN TREATING IRON DISORDERS
申请人:Cadieux Jean-Jacques
公开号:US20100240713A1
公开(公告)日:2010-09-23
This invention is directed to compounds of formula (I), wherein m, formula (II), R
1
, R
2
and R
3
are as defined herein, as a stereoisomer, enantiomer, tautomer thereof or mixtures thereof; or a pharmaceutically acceptable salt, solvate or prodrug thereof, for the treatment of iron disorders. This invention is also directed to pharmaceutical compositions comprising the compounds and methods of using the compounds to treat iron disorders.
A convergent "5 + 1" and "5 + 3" synthetic strategy allowed the synthesis of the first examples of bis-betaines 2 and 3, a prototype of phanes that incorporate heterocyclic betaines. The structure of the quadrupolar macrocyclic systems 2 and 3 together with the dicationic [1(6)]- and [1(8)] meta-heterophane precursors 5*2X and 6*2X were examined by spectroscopy using 1H and 13C NMR techniques together