𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Optimization of long-range 1H-15N 2D NMR experiments at natural abundance -- Assignment of the 15N resonances of cryptospirolepine at the submilligram level

✍ Scribed by Chad E. Hadden; Gary E. Martin; Albert N. Tackie; Paul L. Schiff Jr.


Publisher
Journal of Heterocyclic Chemistry
Year
1999
Tongue
English
Weight
219 KB
Volume
36
Category
Article
ISSN
0022-152X

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


Applications of cryogenic NMR probe tech
✍ Ronald C. Crouch; William Llanos; Knut G. Mehr; Chad E. Hadden; David J. Russell 📂 Article 📅 2001 🏛 John Wiley and Sons 🌐 English ⚖ 159 KB

## Abstract The development of new NMR probe technologies has been an active area of research effort for the past decade. Recently, cryogenically cooled NMR probes have been the subject of considerable interest in the light of the large gains in sensitivity and hence savings in spectrometer time th

Application of accordion excitation in 1
✍ Gary E. Martin; Chad E. Hadden 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 99 KB 👁 1 views

Accordion excitation provides the means of sampling a broad range of potential long-range heteronuclear couplings in a single experiment. Two long-range heteronuclear experiments, ACCORD-HMBC and IMPEACH-MBC, have been developed thus far that offer accordion excitation. The results obtained with the

Modern proton-detected 1D 1H–15N NMR exp
✍ Teodor Parella; Jordi Belloc 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 151 KB

## Abstract Non‐selective and selective versions of several proton‐detected 1D NMR experiments to be applied to ^15^N are proposed. Clean, artifact‐free 1D spectra are easily obtained by the effective coherence selection by pulsed‐field gradients and the attainable sensitivity is maximized using mo

Partial assignment of the 15N NMR spectr
✍ Gary E. Martin; Frank W. Crow; Brian D. Kaluzny; J. Gordon Marr; Gwendolyn D. Fa 📂 Article 📅 1998 🏛 John Wiley and Sons 🌐 English ⚖ 253 KB

Early e †orts to utilize 15N NMR spectroscopy in structure elucidation studies were often frustrated by the low gyromagnetic ratio and the low natural abundance (0.37%) of the nuclide. The advent of 1H and (c N ) inverse-detected 2D NMR methods has eliminated many of the difficulties inherent to the

Long-range 1H-15N two-dimensional hetero
✍ Gary E. Martin 📂 Article 📅 1997 🏛 Journal of Heterocyclic Chemistry 🌐 English ⚖ 289 KB

## Abstract Long‐range ^1^H‐^15^N heteronuclear correlation pathways in the alkaloid vincamine, a structural constituent or biogenetic congener of numerous __Vinca__ alkaloids, are reported. Correlations were observed through the use of the GHNMQC (Gradient‐enhanced Hydrogen‐Nitrogen Multiple Quant