Synthesis and NMR 13C study of polycondensates based on asymmetrical monomers
β Scribed by I.Ya. Slonim; V.A. Vasnev; A.Kh. Bulai; Ya.G. Urman; G.D. Markova; V.V. Korshak; S.V. Vinogradova
- Book ID
- 118966874
- Publisher
- Elsevier Science
- Year
- 1980
- Weight
- 577 KB
- Volume
- 22
- Category
- Article
- ISSN
- 0032-3950
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The Sharpless asymmetric epoxidation was used for the synthesis of D-erythro-dihydrosphingosine triacetate and (22, dimethyl-8-decene-1,3-diol, 35, 5R)-2-acetamino-5,9whose 13C-NMR study couplea with biogenetic consideration enabled us to propose (22, aplidiasphingosine.
The (1)H and (13)C NMR spectra of two stereoisomeric bis-TrΓΆger's bases and four stereoisomeric tris-TrΓΆger's bases asymmetrically substituted on the external aromatic rings were recorded and the corresponding signals assigned. The relative configuration of the stereogenic units has been unequivocal