Figure - PMC - National Center for Biotechnology Information
1H-NMR analysis of hercynine’s imidazole side-chain ε-C-H bond deuterium exchange. (A) 1 H-NMR spectra over time for the reaction mixture containing 3 mM hercynine, selenocystine …
Simulate and predict NMR spectra
Simulate and predict NMR spectra directly from your webbrowser using standard HTML5. You can also simulate 13C, 1H as well as 2D spectra like COSY, HSQC, HMBC. Second order …
Ergothioneine and mycothiol are low molecular mass redox protective thiols present in actinomycetes, in particular mycobacteria. We report the improved chemical synthesis of …
Mechanistic studies of a novel C-S lyase in ergothioneine ... - Nature
2015年7月7日 · In 1 H-NMR spectrum, the imidazole hydrogen in sulfoxide 4 has a chemical shift of 7.15 ppm, while the imidazole hydrogen in thio-ether 8 has a chemical shift of 6.89 ppm. …
Discovery and structure of a widespread bacterial ABC transporter ...
2022年12月8日 · A titration of L-hercynine into 15 N-labeled EgtUC shows that the ligand-bound and free conformations are in fast-to-intermediate chemical exchange on the 1 H NMR …
2015年5月6日 · 13C NMR spectrum in CD 3 OD (Table S1) showed two additional olefinic carbons at δ 121.0 and δ 136.6 that corresponded to C-2″ and C-3″. The HMBC correlations …
NMR characterizations of the product purified from native OvoA reaction (1H-NMR, high-resolution mass spectrometry, COSY, 13 C-NMR, HMQC). A reaction mixture with a volume of …
Regio-selectivity of the Oxidative C-S Bond Formation in …
2013年9月9日 · In comparison with the 1 H-NMR spectra of native EgtB reaction (reaction A, Figure 1) and native OvoA reaction (reaction D, Figure 1), the 7.12 ppm signal highly suggests …
NMR characterizations of cysteine sulfinic acid isolated from the OvoA-reaction when hercynine and cysteine were the substrates (1H-NMR, 13C-NMR, high-resolution mass spectrometry); S …
1 H NMR spectra of monomers: (a) (R)-11; (b) (R)-11/(S)-11 (50/50 ...
Parts c and d of Figure 1 present the 1 H NMR spectra of pure (R)-and (S)-11 with Eu(hfc) 3 , respectively. These results are similar to those previously reported 12 and the estimated …