کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1388878 | 982825 | 2007 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis of 7-O-galloyl-d-sedoheptulose
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
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چکیده انگلیسی
A facile synthetic approach to 7-O-galloyl-d-sedoheptulose (1), a natural product with notable immunosuppressant activity, was developed. The starting material, 2,7-anhydro-d-sedoheptulose (2), was converted in three steps into 1,3,4,5-tetra-O-benzyl-d-sedoheptulose (5), a key intermediate that allows specific functionalization at C-7 of the sedoheptulpyranose. After regioselective esterification of 5 with 3,4,5-tri-O-benzylgalloyl acid, followed by catalytic debenzylation (Pd–C), 1 was obtained in an overall yield of 60%. The spectroscopic data and TLC behavior of 1 were found to be identical to that of the natural product.
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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Carbohydrate Research - Volume 342, Issue 11, 13 August 2007, Pages 1510–1513
Journal: Carbohydrate Research - Volume 342, Issue 11, 13 August 2007, Pages 1510–1513
نویسندگان
Yupeng Xie, Yimin Zhao,