𝔖 Bobbio Scriptorium
✦   LIBER   ✦

1H NMR and IR spectra of antitumour anthracyclines: Effect of the substitution pattern on the chemical shift values of the phenolic protons and on IR absorptions of the quinone system

✍ Scribed by Aristide Vigevani; Marzia Ballabio; Elena Gandini; Sergio Penco


Publisher
John Wiley and Sons
Year
1985
Tongue
English
Weight
682 KB
Volume
23
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis


HNMR and IR data of numerous natural and synthetic analogues of daunorubicin and doxorubicin, anthracycline antibiotics successtully used in the clinical treatment of human tumours, have been recorded. The chemical shift values of the phenolic protons of approximately 130 compounds are reviewed and discussed with the aim of establishing a relationship between 6 values and structural features. The IR absorptions of the quinone system in the region 1560-1680 an-' are also examined.


πŸ“œ SIMILAR VOLUMES


Study of structures, energetics, IR spec
✍ Golam Rasul; Jonathan L. Chen; G.K. Surya Prakash; George A. Olah πŸ“‚ Article πŸ“… 2011 πŸ› Elsevier 🌐 English βš– 896 KB

The C 2 conformation 3 was established to be the preferred conformation of the isopropyl cation. The calculated 13 C NMR chemical shifts of C 2 conformation 3 also agree very well with the experimental data. However, this is, in contrast with the recent claims by Fa ˘rcas ßiu and coworkers, who foun

Concentration and solvent effects on the
✍ Paulo R. de Oliveira; Danilo S. Ortiz; Roberto Rittner πŸ“‚ Article πŸ“… 2006 πŸ› Elsevier Science 🌐 English βš– 149 KB

NMR data, in CCl 4 , show that an increase in the concentration of cis-3-ethoxycyclohexanol (cis-3-ECH) shifts the conformational equilibrium from the ax-ax conformer (X ax-ax Z51% at 0.01 mol L K1 ), stabilized by an intramolecular hydrogen bond (IAHB), to the eq-eq conformer (X eq-eq Z67% at 0.40

The effect of phosphorylation of the his
✍ Hans Robert Kalbitzer; Paul RΓΆsch πŸ“‚ Article πŸ“… 1981 πŸ› John Wiley and Sons 🌐 English βš– 362 KB πŸ‘ 1 views

## Abstract Phosphorylation of the tetrapeptide Gly‐Gly‐His‐Ala by phosphoamidate provides a model peptide for proteins which, in the course of their reaction, bind a phosphoryl group to an imidazole ring. ^31^P‐ and ^1^H‐NMR data, including chemical shift and pK values, for this peptide and its th

Reply to the comment on β€œnovel substitue
✍ Naoki Inamoto; Shozo Masuda; Katsumi Tokumaru; Masayuki Yoshida; Youko Tamura; K πŸ“‚ Article πŸ“… 1975 πŸ› Elsevier Science 🌐 French βš– 207 KB

In recent years, organic chemists have appeared to treat 'H NMR data not cautiously. Before presenting 'H NMR data,' we must overcome the two tedious problems: (1) how to measure a peak position accurately, and (2) how to analyse a signal pattern. In fact, a description such as "8 4.38 (CHOH, t, J =