کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1389048 982838 2008 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Synthesis of the 6-deoxytalose-containing tetrasaccharide of the glycopeptidolipid from Mycobacterium intracellare serotype 7
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی آلی
پیش نمایش صفحه اول مقاله
Synthesis of the 6-deoxytalose-containing tetrasaccharide of the glycopeptidolipid from Mycobacterium intracellare serotype 7
چکیده انگلیسی
An efficient synthesis of 4-methoxyphenyl α-l-Rhap-(1→3)-α-l-Rhap-(1→3)-α-l-Rhap-(1→2)-6-deoxy-α-l-Talp, the tetrasaccharide related to the GPLs of Mycobacterium intracellare serotype 7, was achieved with 4-methoxyphenyl 3,4-di-O-benzoyl-6-deoxy-α-l-talopyranoside (6c) as the key intermediate which was obtained through selective 3-O-benzoylation of 4-O-benzoyl-6-deoxy-α-l-taloside. Coupling of 6c with 3-O-allyloxycarbonyl-2,4-di-O-benzoyl-α-l-rhamnopyranosyl trichloroacetimidate followed by removal of the allyloxycarbonyl protecting group afforded the disaccharide acceptor 11. Condensation of 11 with 2,3,4-tri-O-benzoyl-α-l-rhamnopyranosyl-(1→3)-2,4-di-O-benzoyl-α-l-rhamnopyranosyl trichloroacetimidate and subsequent deprotection gave the target tetrasaccharide.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Research - Volume 343, Issue 18, 8 December 2008, Pages 3107-3111
نویسندگان
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