NMR in BiomedicineDimethyl sulfoxide (DMSO) as a potential contrast agent for brain tumors[J] . T. Delgado‐Go?i,J. Martín‐Sitjar,R. V. Sim?es,M. Acosta,S. Lope‐Piedrafita,C. Arús.NMR Biomed. . 2012 (2)Delgado-Goni T, Simoes R, Acosta M, Martin-Sitjar J, Lope-Piedrafita ...
The compound has been examined by signal-crystal X-ray diffraction (XRD), infrared (IR) and nuclear magnetic resonance (NMR) spectroscopy. The theoretical calculations were carried out by density functional theory (DFT) method by using B3LYP/6-311++G(d,p) as the basis set. The Atom ...
(DMSO)/水混合溶剂中的热变性过程,探讨了酶的浓度、扫描速率和共溶剂的含量对热变性行为的影响规律.在 纯水溶液中,溶菌酶的变性焓(ΔH m )随酶浓度的增大而增大.而在DMSO /水混合溶剂中,变性温度(T m )随DMSO 体积分数的增大向低温方向移动,变性峰变低变宽;当DMSO 体积分数达到70%后,热变性曲线变成了一...
‘3CNMR.includingDEPTandNOESYlDmethod,2DNMRtechniques (gCOSVgHMQC,gHMBC,1H_jHNOESY)wereused,providing the complete signalassignments forthesenewcompounds:Especiallystereoconfiguration wasconfirmednotonlyby tranditional。H_IHNOESYtechniques,butalsoby NOESYlDandregio—andstereosetectiveoxidationreaction.Themechanism...
H NMR spectrums:(a) BB HM P inDMS O—d6 (O. 0 l mol/L) and (b) B BHMP in DM SO—d6 (0.01 molL ) in the presence of 0 . 0 1 equiv.of F concentration B B HMP (mole ratio method) indicated the fo rmation of 1:1 stoichiometry of the adduct (shown in inset Fig....
The aim of this work is to study the interaction of those bases with different acceptors such as nitromethane, nitrobenzene, acetyl acetone, nicotine and acridon, using NMR techniques, in hope of shedding some light on the nature of the above mentioned interaction. Uracil At low concentrations ...
II. Direct evidence of DMSO binding to membranes: an NMR study. J Liposome Res 13:259-267.Kennedy A , Long CJ , Hmel PJ , et al. 2003 ; The interaction of DMSO with model membranes. II. Direct evidence of DMSO binding to membranes: an NMR study . J Liposome Res 13 : 259 – ...
62, while the meso-isomer shows a signal of 1H NMR at δ = 4. 84[2]. This experiential rule was used in almost all the 1,2-diol coupling reactions to determine the ratio of dl to meso of the diols[1, 3-6].LI Ting-you JIANG Shui-shi WANG Zong-mu高等学校化学研究(英文版)...
The interpretation of 1H-NMR chemical shifts, coupling constants, and coefficients of temperature dependence (δ(OH), J(H,OH), and Δδ(OH)/ΔT values) evidences that, in (D6)DMSO solution, the signal of an OH group involved as donor in an intramolecular H-bond to a hydroxy o...
in CDCl_3 the a-H of the dl-1,2-diphenylethanediol has a signal of ~1H NMR at delta = 4.62,while the meso-isomer shows a signal of ~1H NMR at delta = 4.84.This experiential rule was used in almost all the 1,2-diol coupling reactions to determine the ratio of dl to meso of ...