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Synthesis of Chiral [2.2.1] Cryptand Incorporating Methyl 4,6-O- [(S)-Phenyletrylidene]-α-D-Mannopyranoside Unit
Titel:
Synthesis of Chiral [2.2.1] Cryptand Incorporating Methyl 4,6-O- [(S)-Phenyletrylidene]-α-D-Mannopyranoside Unit
Auteur:
Pietraszkiewicz, Marek Jurczak, Janusz
Verschenen in:
Journal of carbohydrate chemistry
Paginering:
Jaargang 4 (1985) nr. 3 pagina's 429-434
Jaar:
1985-09-01
Inhoud:
Recently, we described the high-yield synthesis of chiral [2.2.1J cryptands incorporating carbohydrates. Models show that variations of substituents in the carbohydrate fragment, e.g. in 4,6-O-acetals, may lead to asymmetric modifications in close proximity to the molecular cavity of the ligand, and therefore, to changes in enantiomeric differentiation. We wanted to obtain the cryptand 2 with an axial phenyl group, as shown in Fig.1, which is in contrast to a cryptand (1) obtained earlier with an equatorial phenyl group.
Uitgever:
Taylor & Francis
Bronbestand:
Elektronische Wetenschappelijke Tijdschriften
Details van artikel 184 van 252 gevonden artikelen
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