17α- and 17β-boldenone 17-glucuronides: Synthesis and complete characterization by 1H and 13C NMR
✍ Scribed by Silvana Casati; Roberta Ottria; Pierangela Ciuffreda
- Book ID
- 116892288
- Publisher
- Elsevier Science
- Year
- 2009
- Tongue
- English
- Weight
- 284 KB
- Volume
- 74
- Category
- Article
- ISSN
- 0039-128X
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## Abstract ^1^H, ^13^C and ^17^O NMR spectra for 22 substituted nitropyridines were measured and their ^1^H NMR spectra were analysed. The most significant variations in the NMR parameters are found for isomeric hydroxy derivatives, owing to the possibility of keto–enol tautomerism. The prevalence
The 17O, 13C and 1H NMR spectra of a number of 1,2-dialkoxyethenes R1OCHxCHOR2 were recorded. The O atoms, in particular those of the E forms, are strongly shielded relative to the 17O nuclei of the corresponding alkyl vinyl ethers Moreover, in compounds of the type ROCHxCHOMe, the di †er-ROCHxCH 2