𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Determination and assignment of heteronuclear long-range coupling constants. Methods based on semiselective INEPT

✍ Scribed by Dušan Uhrín; Tibor Liptaj


Publisher
Elsevier Science
Year
1989
Weight
592 KB
Volume
81
Category
Article
ISSN
0022-2364

No coin nor oath required. For personal study only.


📜 SIMILAR VOLUMES


Determination of heteronuclear long-rang
✍ Wieland Willker; Dieter Leibfritz 📂 Article 📅 1995 🏛 John Wiley and Sons 🌐 English ⚖ 539 KB

## Abstract A gradient‐selected __J__‐HMBC experiment is presented. Coherence selection with magnetic field gradients results in HMBC spectra in which __t__~1~ noise is very low or completely eliminated. This makes it possible to detect unequivocally very small (<2 Hz) long‐range H,X coupling const

Determination of long-range 13C, 1H coup
✍ Patrick Ladam; Josyane Gharbi-Benarous; Martial Piotto; Marcel Delaforge; Jean P 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 629 KB

## Abstract 2D __J__—δ selective INEPT experiments were used to measure long‐range ^13^C,^1^H coupling constants for the macrolide antibiotics roxithromycin, erythromycin and their metabolites, RU 39001 and erythralosamine, respectively. The 2D __J__—δ selective INEPT experiment was performed using

Assignment of carbon-13 NMR spectra and
✍ A. A. Chalmers; K. G. R. Pachler; P. L. Wessels 📂 Article 📅 1974 🏛 John Wiley and Sons 🌐 English ⚖ 244 KB 👁 1 views

## Abstract The application of selective population inversion (SPI) to the assignment of ^13^C resonances and to the determination of the relative sign of ^13^C^1^H coupling constants is demonstrated for 1‐phenyl‐1,2‐dibromo‐2‐nitroethane. A negative sign for the geminal C‐2H‐1 coupling constant

Determination of the sign of long-range
✍ Yasuhiro Kumaki; Kunio Hikichi 📂 Article 📅 1999 🏛 John Wiley and Sons 🌐 English ⚖ 84 KB 👁 2 views

The sign of the scalar coupling between a carbonyl carbon and ˛-proton J(C 0 ,H ˛), for the cyclic dipeptide cyclo(Leu-Gly) was determined relative to that between an amide proton and ˛-proton 3 J(H N ,H ˛) by an E.COSYtype HSQC experiment. The pulse sequence used in this experiment gives a cross pe

One- and two-dimensional gradient-select
✍ R. Thomas Williamson; Brian L. Márquez; William H. Gerwick; Katalin E. Kövér 📂 Article 📅 2000 🏛 John Wiley and Sons 🌐 English ⚖ 240 KB 👁 2 views

Three new gradient-selected NMR experiments for the analysis of long-range heteronuclear coupling constants are presented. They are demonstrated on a series of compounds including sucrose, strychnine and a complex macrolide, phormidolide, isolated from a marine cyanobacterium. These 1D and 2D hetero