On the formation of unusual complex salts in the ternary system M(NO3)2 (M = Ni, Co)-4,4′-bipyridine-biphenylene-4,4′-bis(methylphosphinic acid)
作者:A. V. Krayushkina、V. A. Milyukov、O. G. Sinyashin、P. Lönnecke、E. Hey-Hawkins
DOI:10.1007/s11172-014-0640-5
日期:2014.7
It was shown for the first time that the products of the reaction of biphenylene-4,4′-bis(methylphosphinic acid), 4,4′-bipyridine, and M(NO3)2 (M = Ni, Co) under the solvothermal synthesis conditions are complex salts with the phosphinate anion instead of the expected coordination polymers. The coordination environment of the nickel ion contains, along with water molecules, only one nitrogen atom of the 4,4′-bipyridine molecule, whereas the environment of cobalt includes two nitrogen atoms of two 4,4′-bipyridine molecules.
Synthesis and structure of ferrocenylphosphinic acids
作者:Ruslan P. Shekurov、Vasili A. Miluykov、Daut R. Islamov、Dmitry B. Krivolapov、Olga N. Kataeva、Tatyana P. Gerasimova、Sergey A. Katsyuba、Gulnaz R. Nasybullina、Vitaliy V. Yanilkin、Oleg G. Sinyashin
DOI:10.1016/j.jorganchem.2014.04.035
日期:2014.9
The series of ferrocenylphosphinicacids Fc(P(R)(O)(OH)) (1a–d) and ferrocene-1,1′-diyl-phosphinic acids Fc(P(R)(O)(OH))2 (2a–d) (R = H (a), Me (b), Et (c), Ph (d)) have been obtained and studied using X-ray single crystal diffraction, IR-spectroscopy and quantum chemistry. The intermolecular hydrogen bonding in 1a–d proceeds highly stereoselectively and results in formation of racemic conglomerate
A process for the production of oligonucleotides such as DNA is disclosed which comprises the phosphite triester method on inorganic solid support in which a hindered dialkylamino nucleoside phosphite having a total of 4 to 6 carbon atoms in the dialkyl group is employed as an intermediate reagent in the synthesis. The solid support preferably is controlled pore glass with a long spacer.
本发明公开了一种用于生产 DNA 等寡核苷酸的工艺,该工艺包括在无机固体载体上使用亚磷酸三酯法,在合成过程中使用受阻二烷基氨基核苷亚磷酸作为中间试剂,亚磷酸二烷基共有 4 至 6 个碳原子。固体支持物最好是带有长间隔的可控孔隙玻璃。
Effect of Ribose Conformation on RNA Cleavage via Internal Transesterification
RNA cleavage via internal transesterification is a fundamental reaction involved in RNA processing and metabolism, and the regulation thereof. Herein, the influence of ribose conformation on this reaction was investigated with conformationally constrained ribonucleotides. RNA cleavage rates were found to decrease in the order South-constrained ribonucleotide > native ribonucleotide >> North-constrained counterpart, indicating that the ribose conformation plays an important role in modulating RNA cleavage via internal transesterification.