TY - JOUR
T1 - Methyl (2′S,3′S)-3,4-O-(2′,3′-dimethoxy-butane- 2′,3′-di-yl) - L-rhamnopyran-oside
T2 - A glycosyl acceptor
AU - Tsai, Yow Fu
AU - Yang, Jen Ta
AU - Chen, Jhy Der
AU - Lin, Chia Her
PY - 2008/4/30
Y1 - 2008/4/30
N2 - The title compound, C13H24O7, is the product of the ketalization of methyl l-(+)-rhamnopyran-oside with 2,3-butane-dione. It crystallizes with two mol-ecules in the asymmetric unit, which are connected by O - H⋯O hydrogen bonds. The C-3,4 diequatorial hydroxy groups of the methyl l-(+)-rhamnopyran-oside were protected, leaving the C-2 hydroxy group free. The l-(+)-rhamnopyran-oside and 2′,3′-dimethoxy-butane-2′, 3′-diyl rings adopt chair conformations and all meth-oxy groups are in axial positions. The absolute configuration was assumed from the synthesis.
AB - The title compound, C13H24O7, is the product of the ketalization of methyl l-(+)-rhamnopyran-oside with 2,3-butane-dione. It crystallizes with two mol-ecules in the asymmetric unit, which are connected by O - H⋯O hydrogen bonds. The C-3,4 diequatorial hydroxy groups of the methyl l-(+)-rhamnopyran-oside were protected, leaving the C-2 hydroxy group free. The l-(+)-rhamnopyran-oside and 2′,3′-dimethoxy-butane-2′, 3′-diyl rings adopt chair conformations and all meth-oxy groups are in axial positions. The absolute configuration was assumed from the synthesis.
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U2 - 10.1107/S1600536808008222
DO - 10.1107/S1600536808008222
M3 - Article
AN - SCOPUS:43149120705
SN - 1600-5368
VL - 64
SP - o897
JO - Acta Crystallographica Section E: Structure Reports Online
JF - Acta Crystallographica Section E: Structure Reports Online
IS - 5
ER -