𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Carbon-13 NMR spectral studies on chalcones and acetophenones

✍ Scribed by Amarendra Patra; Gargi Ghosh; Pradip K. Sengupta; Swadhin Nath

Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
204 KB
Volume
25
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

Carbon-I3 signal assignments of eighteen polyoxygenated chalcones and thirteen polysubstituted acetophenones are reported.

📜 SIMILAR VOLUMES

Carbon-13 spectral studies of some chalc
Carbon-13 spectral studies of some chalcones and flavanones
✍ Amarendra Patra; Alok K. Mitra; Anjan Bhattacharyya; N. Adityachaudhury 📂 Article 📅 1982 🏛 John Wiley and Sons 🌐 English ⚖ 129 KB 👁 1 views

## Abstract Carbon‐13 signal assignments of 2′,4′‐dihydroxychalcone, flemichapparin, pashanone, isodidymocarpin, pedicellin, pedicinin, methylpedicinin, didymocarpin‐A and the corresponding quinoflavanone dehydrodidymocarpin‐A are reported.

Carbon-13 NMR spectral studies on some l
Carbon-13 NMR spectral studies on some labdane diterpenoids
✍ Amarendra Patra; Alok K. Mitra; Swapna Biswas; Chitra Das Gupta; Ajoy Basak; A. 📂 Article 📅 1981 🏛 John Wiley and Sons 🌐 English ⚖ 237 KB 👁 1 views

## Abstract Carbon‐13 NMR signal assignments of the labdane diterpenoids andrographolide and 14‐deoxyandrographolide, along with their acetates, and isodeoxyandrographolide have been made. This study indicates that the C‐6 and C‐11 resonance assignments of isovirescenol‐B, made earlier, should be i

NMR spectral studies. XIV. Carbon-13 nuc
NMR spectral studies. XIV. Carbon-13 nuclear magnetic resonance studies on β-lactams
✍ Ajay K. Bose; P. R. Srinivasan 📂 Article 📅 1979 🏛 John Wiley and Sons 🌐 English ⚖ 442 KB

## Abstract Carbon‐13 NMR spectra of a variety of mono‐ and bicyclic β‐lactams have been measured and the chemical shifts of the ring carbon atoms have been assigned unambiguously. Effects of substituents on the chemical shifts of these carbons are also 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

Carbon-13 NMR spectral analysis of oxazi
Carbon-13 NMR spectral analysis of oxazine derivatives and precursors
✍ Gerard P. Moloney; David J. Craik; Magdy N. Iskander 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 291 KB

## Abstract ^13^C NMR chemical shifts are reported for six pyridoxal‐derived and fourteen salicylaldehyde‐derived oxazines and their immediate precursors. Similar data for seven vitamin B~6~‐related compounds are also reported.