𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Carbon-13 NMR investigations of three fluorinated steroids

✍ Scribed by Steven A. Carss; Robin K. Harris; Richard A. Fletton

Publisher
John Wiley and Sons
Year
1995
Tongue
English
Weight
432 KB
Volume
33
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

High‐resolution carbon‐13 NMR spectra were obtained for three solid fluorinated steroids. Assignments were carried out using several approaches, including two‐dimensional spectra of the compounds in solution. Solid‐state and solution‐state chemical shifts are compared. Signals from one of the fluorine‐containing carbons in each compound show the effect of interplay between shielding, dipolar and indirect scalar (J) coupling tensors. One sample is found to be a mixture of two polymorphic forms.

📜 SIMILAR VOLUMES

Carbon-13 NMR data for methylated steroi
Carbon-13 NMR data for methylated steroids
✍ E. Meskó; Gy. Schneider; Gy. Dombi; D. Zeigan 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 270 KB

## Abstract Carbon‐13 chemical shifts of 40 methylated steroid derivatives are reported.

Carbon-13 NMR spectra of some c-6 methyl
Carbon-13 NMR spectra of some c-6 methylated steroids
✍ Takashi Iida; Toshitake Tamura; Taro Matsumoto 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 241 KB 👁 1 views

13C NMR signals were assigned for a series of C-6 rnethylated steroids related to 5 acholestane, and the substituent effect of methyl groups at C-6 on the shielding data is discussed.

Carbon-13 NMR spectral investigations on
Carbon-13 NMR spectral investigations on allenic esters: Rationalization of carbon-13 NMR chemical shifts and relaxation times (T1)
✍ R. P. Gandhi; M. P. S. Ishar 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 389 KB 👁 1 views

## Abstract Carbon‐13 NMR chemical shifts (CDCl~3~ and C~6~D~6~ solvents) and relaxation times (__T__~1~) were determined for carbons in a series of allenic esters [RR~1~CCCHCO~2~ Et; (1) R = R~1~ = H; (2) R = H, R~1~ = CH~3~; (3) R = H, R~1~ = CH~3~CH~2~; (4) R = R~1~ = CH~3~; (5) R = CH~3~, R~1

Hydroacridines. XIV—carbon-13 NMR spectr
Hydroacridines. XIV—carbon-13 NMR spectra of three perhydroacridine stereoisomers
✍ Francisc Potmischil; Hermann Kalchhauser 📂 Article 📅 1994 🏛 John Wiley and Sons 🌐 English ⚖ 161 KB

## Abstract The ^13^C NMR chemical shifts of (4aα,8aα, 9aβ, 10aα)‐, (4aα,8aα,9aα, 10aβ)‐ and (4aα,8aβ,9aα, 10aβ)‐tetradecahydroacridine were measured and fully assigned on the basis of APT, ^13^C, ^1^H shift correlation and 2D‐INADEQUATE spectra.

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