✦ LIBER ✦

The carbon-13 spectra of steroids on the way to ecdysone

✍ Scribed by William B. Smith

Publisher: John Wiley and Sons
Year: 1977
Tongue: English
Weight: 347 KB
Volume: 9
Category: Article
ISSN: 0749-1581
DOI: 10.1002/mrc.1270091108

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

A combination of chemical shift reagent effects, partially relaxed spectra, and carbon T~1~ measurements have been used to assign the chemical shifts of the carbons in seven different steroids which have served as intermediates in a synthesis of the steroid moulting hormone ecdysone. The assignments of ergosterol have been completed. It has been shown that the T~1~'s are consistent with the molecular structures.

📜 SIMILAR VOLUMES

Epoxidation-induced shifts in the carbon

Epoxidation-induced shifts in the carbon-13 NMR spectra of steroids: Lanostane derivatives

✍ Jacek Martynow; Zdzisław Paryzek 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 English ⚖ 463 KB 👁 1 views

The ' ' C chemical shifts of triterpenoidal olefins and epoxides related to lanosterol are described and discussed. The epoxide function located in the central part of the tetracyclic steroidal skeleton allows the evaluation of epoxidation-induced shifts (EIS) for several carbons. The most character

On the assignments of carbon-13 NMR spec

On the assignments of carbon-13 NMR spectra of cyclic nucleotides

✍ M. Kainosho 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 165 KB

## Abstract Two conflicting assignments have been proposed for the ^13^C NMR signals of 3′,5′‐cyclic nucleotides. This communication describes selective decoupling experiments for several cyclic nucleotides which provide the correct assignment based on unambiguous experimental evidence.

ChemInform Abstract: On the Way to Carbo

ChemInform Abstract: On the Way to Carbon Nitride

✍ B. L. KORSOUNSKII; V. I. PEPEKIN 📂 Article 📅 2010 🏛 John Wiley and Sons ⚖ 26 KB 👁 1 views

Carbon-13 NMR spectra of steroidal epoxi

Carbon-13 NMR spectra of steroidal epoxides. Configurational assignment of an epoxy group on six-membered ring by carbon-13 NMR spectroscopy

✍ Kazuo Tori; Taichiro Komeno; M. Sangaré; B. Septe; B. Delpech; A. Ahond; G. Luka 📂 Article 📅 1974 🏛 Elsevier Science 🌐 French ⚖ 239 KB

In the structure elucidation of epoxide-containing natural produck,' we have been confronted with the problem of assignment of configuration of the three-membered ring. Although the relatively high field resonance of epoxide carbons has already been noticed,3 no systematic study has been made on the

Carbon-13 nmr spectra of 5β-steroidal sa

Carbon-13 nmr spectra of 5β-steroidal sapogenins. Reassignment of the F-ring carbon signals of (25S)-spirostans

✍ Kazuo Tori; Shujiro Seo; Yoshihiro Terui; Junko Nishikawa; Fumio Yasuda 📂 Article 📅 1981 🏛 Elsevier Science 🌐 French ⚖ 313 KB

The mass spectra of 13C labelled methyle

The mass spectra of 13C labelled methylene derivatives of steroids—IV

✍ F. García; R. Cruz; M. González 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 187 KB