An array of one-and two-dimensional NMR techniques (APT, DEPT, COSY, NOESY, HMQC and HMBC) was used to achieve the structural elucidation of some natural benzofuranoid and hydrofuran neolignans isolated from L icaria chrysophylla, L . armeniaca, L . aurea and Nectandra glabrescens fruits. The combin
Assignment of the 13C NMR spectra of some adenine, hypoxanthine and guanine carbonucleosides
β Scribed by M. Teijeira; L. Santana; E. Uriarte
- Publisher
- John Wiley and Sons
- Year
- 1997
- Tongue
- English
- Weight
- 155 KB
- Volume
- 35
- Category
- Article
- ISSN
- 0749-1581
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β¦ Synopsis
The 13C NMR spectra of various 9-(2-hydroxymethylcyclopentyl)purines and 9-(2-hydroxymethylcyclopentylmethyl)purines (purine ΒΌ adenine, hypoxanthine or guanine) were fully assigned with the aid of one-(1H, 1H-1H NOE, DEPT) and twodimensional (HMQC) NMR experiments. 1997
π SIMILAR VOLUMES
The 13 C NMR signals of various 9-(2-hydroxymethylcyclopentyl)purines and 9-(2-hydroxymethylcyclopentylmethyl)purines (purine D 8-azaadenine, 2,6-diaminopurine or 2,6-diamino-8-azapurine) were fully assigned with the aid of one-dimensional ( 1 H, 1 H-1 H NOE, DEPT) and two-dimensional (HMQC and HMBC
The 13C NMR spectra of several 1-(2-hydroxymethylcyclopentyl)and 1-(2-hydroxymethylcyclopentylmethyl)uracils and 5halouracils (X ΒΌ Cl, Br or I) were fully assigned with the aid of one-(13C, 1H-1H NOE, DEPT) and two-dimensional (HMQC) NMR experiments.
The total assignment of the 13C NMR spectra of novel diazine derived ureas and thioureas is reported.
The proton and carbon chemical shifts and the coupling constants nJ(H,H) and nJ(C,H) of thioquinanthrene and isothioquinanthrene were completely assigned from COSY, HETCOR and INEPT studies. 1998 ( John Wiley & Sons, Ltd.