Towards new boron carriers for boron neutron capture therapy: Metallacarboranes bearing cobalt, iron and chromium and their cholesterol conjugates
摘要:
A method for the synthesis of cholesterol-metallacarborane conjugates bearing cobalt, iron and chromium was developed. Effective incorporation of the cholesterol conjugate bearing cobalt into liposome membrane was revealed. Using the metallacarborane-encrusted liposomes as boron delivery system in vivo biodistribution experiments in tumor-bearing mice, high accumulation and selective delivery of boron into tumor tissues was observed. The results demonstrate that the cholesterol-metallacarborane conjugates can be considered as a potential candidate for boron delivery vehicle in BNCT. (C) 2013 Elsevier Ltd. All rights reserved.
新的顺磁性梭菌-[(8-(-CH 2 CH 2 O)2 -1,2-C 2 B 9 H 10)(1',2'-C 2 B 9 H 11)-3的合成,3'-Fe] 0(3)被报道。该化合物可以用作构建阴离子和两性离子衍生物的通用结构单元,例如,合成了一系列通式为closo -[(8-X-(CH 2 CH 2 O)2 -1, 2-C 2 B 9 H 10)(1′,2′-C2 B 9 H 11)-3,3'-Fe],带有有机端基(X = NC 5 H 5(4),(C 6 H 5)3 P(5),OH(6)和2- O(1-CH 3 O–C 6 H 4)(7))通过二甘醇间隔基连接到簇。的分子结构3,4,5和7是由单晶X射线衍射分析,并通过NMR(顺磁性的,高场的长时间被忽视的方法测定的1 H,13 C和11 B)光谱。
The effect of a paramagnetic metal ion within a molecule: comparison of the structurally identical paramagnetic [3,3-Fe(1,2-C<sub>2</sub>B<sub>9</sub>H<sub>11</sub>)<sub>2</sub>]<sup>−</sup> with the diamagnetic [3,3-Co(1,2-C<sub>2</sub>B<sub>9</sub>H<sub>11</sub>)<sub>2</sub>]<sup>−</sup> sandwich complexes
作者:Ana M. Cioran、Francesc Teixidor、Clara Viñas
DOI:10.1039/c4dt03418j
日期:——
Effects on the NMR spectra of a paramagnetic metal ion are clearly observed by comparing identical sandwich molecular structures of diamagnetic [3,3′-Co(1,2-C2B9H11)2]− with paramagnetic [3,3′-Fe(1,2-C2B9H11)2]−.
Carborane- or Metallacarborane-Linked Nucleotides for Redox Labeling. Orthogonal Multipotential Coding of all Four DNA Bases for Electrochemical Analysis and Sequencing
作者:David Kodr、Cansu Pinar Yenice、Anna Simonova、Dijana Pavlović Saftić、Radek Pohl、Veronika Sýkorová、Mayreli Ortiz、Ludĕk Havran、Miroslav Fojta、Zbigniew J. Lesnikowski、Ciara K. O’Sullivan、Michal Hocek
DOI:10.1021/jacs.1c02222
日期:2021.5.12
CuAAC click reaction. The modified dNXTPs were substrates for KOD XL DNApolymerase in enzymatic synthesis of modified DNA through primer extension (PEX). The nido-carborane- and FESAN-modified nucleotides gave analytically useful oxidation signals in square-wave voltammetry and were used for redoxlabeling of DNA. The redox-modified DNA probes were prepared by PEX using tailed primers and were hybridized
我们报告了一系列带有二碳酰氨基-十一硼酸盐 ([C 2 B 9 H 11 ] 1– )、[3,3'-铁-双(1,2-二碳化物)] - (FESAN, [Fe(C 2 B 9 H 11 ) 2 ] 2– ) 或 [3,3'-钴-双(1,2-二碳化物)] - (COSAN, [Co(C 2 B 9 H 11 ) 2 ] 2 – ) 通过 Sonogashira 交叉偶联或 CuAAC 点击反应制备的组。改良的dN X TPs 是通过引物延伸 (PEX) 酶促合成修饰 DNA 中 KOD XL DNA 聚合酶的底物。该巢-carborane-和FESAN修饰的核苷酸在方波伏安法,得到分析有用的氧化的信号,并用于DNA的氧化还原标记。氧化还原修饰的 DNA 探针是使用加尾引物通过 PEX 制备的,并与包含捕获寡核苷酸的电极(金或玻璃碳)杂交。尼多的组合-碳硼烷和 FESAN 连接的核苷酸与 7-二茂铁基乙炔基-7-脱氮-dATP
Synthesis and the structure of 8-tetrahydrofuronium and 8-tetrahydropyronium derivatives of iron bis(dicarbollide)(-I) and their cleavage reactions
作者:Irina Lobanova、Irina Kosenko、Julia Laskova、Ivan Ananyev、Anna Druzina、Ivan Godovikov、Vladimir I. Bregadze、Shicheng Qi、Zbigniew J. Leśnikowski、Andrey Semioshkin
DOI:10.1039/c4dt03015j
日期:——
8-tetrahydropyronium derivatives of ironbis(dicarbollide)(-I) were synthesized. Their reactions of ring cleavage by MeOH, N3−, amines and 1,2-bis(diphenylphosphino)ethane were investigated. 8-Tetrahydrofuronium ironbis(dicarbollide)(-I) was found to be more active in these reactions in comparison with 8-tetrahydropyronium and 8-dioxonium species, respectively. The first conjugates of ironbis(1,2-dicarbollide)(-I)
DNA-Dinucleotides Bearing a 3‘,3‘-Cobalt- or 3‘,3‘-Iron-1,2,1‘,2‘-dicarbollide Complex
作者:Agnieszka B. Olejniczak、Paulina Mucha、Bohumir Grüner、Zbigniew J. Lesnikowski
DOI:10.1021/om070102z
日期:2007.7.1
The synthesis of mononucleoside and dinucleoside phosphates and H-phosphonates bearing boron cluster complexes of cobalt or iron is described. The proposed method provides key synthons for the preparation of bioinorganic DNA/metallacarborane conjugates for a variety of applications.
[B12H12]2– (5, 6), [3,3′-Co(1,2-C2B9H11)2]− (7, 8), and [3,3′-Fe(1,2-C2B9H11)2]− (9) anions have been readily synthesized from meso-(4-hydroxyphenyl)-4,4-difluoro-4-bora-3a,4a-diaza-s-indacene (BODIPY 4), and their structure and photoluminescence properties have been assessed. Linking anionic boron clusters to the BODIPY (4) does not alter significantly the luminescent properties of the final fluorophores