𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Two-dimensional NMR studies of cyperene

✍ Scribed by P. Joseph-Nathan; E. Martińez; R. L. Santillan; J. R. Wesener; H. Günther


Publisher
John Wiley and Sons
Year
1984
Tongue
English
Weight
392 KB
Volume
22
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis


Combined utilization of 'H-IH homonuclear and 'H-l'C heteronuclear N M R chemical shift correlations,

two-dimensional J-resolved 'H NMR measurements and homonuclear 'H double resonance experiments allowed specific assignments for both 'H and -C NMR frequencies to be made for the tricyclic sesquiterpene cyperene. The results also provided information on the conformation of the six-membered ring of this natural product, which was recognized as a distorted chair.


📜 SIMILAR VOLUMES


Two-dimensional NMR study of eledoisin
✍ Ta-Horng Yang; Tsung-Yi Chang; Chin Yu 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 346 KB

## Abstract The ^1^H and ^13^C NMR spectra of eledoisin, an antidiuretic hormone, were studied by two‐dimensional NMR techniques. All the ^1^H and ^13^C NMR resonances were unambiguously determined from a combination of the 2D homo‐ and hetero‐nuclear NMR spectra.

Two-dimensional NMR study of ganwuweizic
✍ Yu-Xin Cui; Su-Ming Hua; Jin-Long Cheng; Jian-Min Yue; Yao-Zu Chen 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 English ⚖ 283 KB

Several two-dimensional NMR techniques were applied to assign completely the ' H and 13C chemical shifts and to study the configuration and conformation of a new triterpenoid, 3-keto-9,10,19cyclopropyllanost-24-en-26-oic acid (ganwuweizic acid). Some 13C NMR signals previously reported for the trite

Two-dimensional NMR studies of arsenical
✍ Richard J. O'Connor; Evelyn L. McGown; Kilian Dill; Susan F. Hallowell 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 English ⚖ 422 KB

British anti-lewisite (2,3-dimercaptopropanol) (BAL) has long been used as an arsenic antidote, but its therapeutic efficacy is limited by its inherent toxicity. Two less toxic potential replacements for BAL are dimercaptosuccinic acid and dimercaptopropanesulfonic acid. These two disulfhydryl compo

The study of sipholanes by two-dimension
✍ S. Carmely; Y. Kashman 📂 Article 📅 1986 🏛 John Wiley and Sons 🌐 English ⚖ 485 KB

The complete assignment of the 13C and 'HNMR spectra of sipholenol-A and sipholenone-A, two new triterpenes isolated from a marine sponge, were achieved from 'H-OC shift correlation diagrams.

A two-dimensional NMR study of angelic a
✍ P. Joseph-Nathan; J. R. Wesener; H. Günther 📂 Article 📅 1984 🏛 John Wiley and Sons 🌐 English ⚖ 169 KB

The controversy about the 13C NMR assignment of the methyl groups in angelates and tiglates was settled by two-dimensional 'H-=C chemical shift correlations for angelic and tiglic acid.

Two-dimensional NMR spectroscopy of glyc
✍ Hans C. Krebs; Gerhard G. Habermehl 📂 Article 📅 1992 🏛 John Wiley and Sons 🌐 English ⚖ 245 KB

## Abstract Two‐dimensional NMR spectroscopy was used for the structure elucidation of glycosides. In particular, the connectivity between different sugar residues and between sugar and acid moieties is discussed.