Вы искали: arabinopyrannosyl (Французский - Английский)

les muscarosides d, e et f sont respectivement de nouveaux tétra-, penta- et hexasaccharides du nor-27 lanostane qui ont été isolés des bulbes du muscaricomosum et pour lesquels il a été établi que les structures sont respectivement les suivantes: {α-l-arabinopyrannosyl(1→3) [β-d-apio-d-furannosyl(1→2)]-β-d-glucopyrannosyl(1→2)-α-l-arabinopyrannosyl(1→6)-β-d-glucopyrannosyl}-3-o époxy-17,23 tétrahydroxy-3β,24,30,31 nor-27 5α-lanostène-8-(23s,24s) (4), {α-l-arabinofurannosyl(1→2)-α-l-arabinopyrannosyl(1→3)-[α-l-rhamnopyrannosyl(1→2)]-β-d-glucopyrannosyl(1→2)-α-l-arabinopyrannosyl(1→6)-β-d-glucopyrannosyl}-3-o époxy-17,23 dihydroxy-3β,31 nor-27 5α-lanostène-8 dione-15,24-(23r) (5) et [β-d-apio-d-furannosyl(1→2)-β-d-glucopyrannosyl(1→2)-α-l-arabinopyrannosyl(1→6)-β-d-glucopyrannosyl]-3o époxy-17,23 dihydroxy-3β,31 nor-27 5α-lanostène-8 dione-15,24-(23s) (6).
muscarosides d, e, and f, three new 27-norlanostane tetra-, penta-, and hexasaccharides, respectively, isolated from the bulbs of muscaricomosum, were respectively shown to be (23s,24s)-3-o-{α-l-arabinopyranosyl(1→3)[β-d-apio-d-furanosyl(1→2)]-β-d-glucopyranosyl(1→2)-α-l-arabinopyranosyl(1→6)-β-d-glucopyranosyl}-17,23-epoxy-3β,24,30,31-tetrahydroxy-27-nor-5α-lanost-8-ene 4, (23r)-3-o-{α-l-arabinofuranosyl(1→2)-α-l-arabinopyranosyl(1→3)[α-l-rhamnopyranosy(1→2)]-β-d-glucopyranosyl(1→2)-α-l-arabinopyranosyl(1→6)-β-d-glucopyranosyl}-17,23-epoxy-3β,31-dihydroxy-27-nor-5α-lanost-8-en-15,24-dione 5, and (23s)-3-o-[β-d-apio-d-furanosyl(1→2)-β-d-glucopyranosyl(1→2)-α-l-arabinopyranosyl(1→6)-β-d-glucopyranosyl]-17,23-epoxy-3β,31-dihydroxy-27-nor-5α-lanost-8-en-15,24-dione 6. the structural details were elucidated by a combination of fast-atom-bombardment mass spectroscopy, one- and two-dimensional nuclear magnatic resonance spectroscopy, and comparison to model compounds expressly synthesized.