用1H-13C HSQC的峰值强度制作校准曲线(图S3)。 图S2.代表性的1H-13C异核单量子相干(HSQC)核磁共振谱来自干老化提取物的28天老化外皮,使用850兆赫低温核磁共振谱仪和代谢物列表模式整合获得,用于2D核磁共振分析. 图S3.基于使用850兆赫低温核磁共...
2D 1H–13C HSQC NMRPeak modellingLorentzianMetabolomicsClassificationMetabolitesmodified Lorentzian distribution function is used to model peaks in two-dimensional (2D) H-C heteronuclear single quantum coherence (HSQC) nuclear magnetic resonance (NMR) spectra. The model fit is used to determine accurate ...
2D-NMR(HSQC)differencespectrabetweenspecifically 13 C-enrichedandunenrichedprotoligninofGinkgobiloba obtainedinthesolutionstateofwholecellwallmaterial NoritsuguTerashima 1, *,TakuyaAkiyama 2 , SallyRalph 3 ,DmitryEvtuguin 4 ,CarlosPascoal Neto 4 ,JimParka˚s 5,6 ,MagnusPaulsson 5,7 , UllaWestermark...
A method for multivolume 2D 1H-13C correlation spectroscopy, multislice heteronuclear single quantum coherence (HSQC), is proposed. This permits human brain metabolism from glucose to amino acids to be followed using a 2-T whole-body scanner. The modifications from the conventional HSQC are that...
是八十年代经Ernst和Freeman等小组的努力发展起来的NMR新技术，是NMR软件开发和应用最新技术的结果。二维核磁共振谱的出现对鉴定有机化合物结构来说，解决问题更客观、可靠，而且提高了所能解决的难度和增加了解决问题的途径。化学位移和偶合常数:(H)-(H)，(H)-(C),(C)-(C),(...
These are clearly distinguished using 13C NMR assignments and the 2D HSQC NM R experiment. The 13C{ 1H} NMR spectrum of the V-B copolymer (Fv = 0.5) in CDC13 is shown in Figure 2. The methyl carbon (4CH3) of the alkyl side chain resonances at b 13.64 ppm. The methylene carbons ...
为解析萘普生的分子结构,测试了萘普生的一维核磁和二维核磁1H NMR,13C NMR,DEPT-135,1 H-1H COSY,HSQC,HMBC,1H-1H NOESY谱图,实现了萘普生氢谱和碳谱的全归属.成功对... 刘渝萍,曹渊,陈昌国,... - 《实验室研究与探索》 被引量: 0发表: 2017年 利用MestRe-C软件处理二维核磁共振谱图 针对Bruker公司产...
把检测13C信号变为检测1H信号，将大大提高相关谱的灵敏度。1H检测的异核化学位移相关谱实验称为反转实验（inverse实验）。包括：•HMQC（1H检测的异核多量子相干实验）•HSQC（1H检测的异核单量子相干实验）•HMBC（1H检测的异核多键相干实验）（1）HMQC(HeteronuclearMultipleQuantumCoherence)•薄荷醇的HMQC谱 ...
摘要 本文运用一维和二维核磁共振方法对芴及其衍生物的结构进行了系统研究.通过1H1D-NMR,1H-1H COSY 2D-NMR和1H-13C HSQC 2D-NMR谱对C8-Br,Si8-Br,N8-Br进行表征并对其结构准确归属,为有机... 出版源 江苏省分析测试协会 , 2013 关键词发光材料 / 芴类化合...
The spectral resolution of 2D 1H-13C heteronuclear single quantum coherence (1H-13C-HSQC) nuclear magnetic resonance (NMR) spectra facilitates both metabolite identification and quantification in nuclear magnetic resonance-based metabolomics. However, qu