Synthesis of 6-thiosucrose, and an improved route to 6-deoxysucrose.
Synthesis of 6-thiosucrose, and an improved route to 6-deoxysucrose.
复制标题
6-硫代蔗糖的合成以及6-脱氧蔗糖的改进路线。
DOI:
10.1016/0008-6215(84)85077-6
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发表时间:
1984
影响因子:
3.1
通讯作者:
Robyt,JF
中科院分区:
文献类型:
--
作者:
Binder,TP;Robyt,JF
Over the past decade various specific modifications of the primary hydroxyl groups of sucrose have been accomplished, including the synthesis of disubstituted sucroses, where the 6 and 6'carbons have been modi fied1-6, and various monosubstitutions’?> 8. The synthesis of cyclic acetals by Khan et al. 9 has made it possible to select for one of the primary hydroxyl groups® in later modifications. We now report the synthesis of 6-thiosucrose (7) and 6-deoxysucrose (9) via the use of the 4, 6-acetal of sucrose.Selective iodination of 2, 3, 1', 3', 4', 6'-hexa-0-benzoylsucrose9 (3) with triphenylphosphine, iodine and imidazole10 gave 2, 3, 1', 3', 4', 6'-hexa-0-benzoyl-6-deoxy-6-iodosucrose (4) in 75% yield. Nucleophilic displace ment of the iodide by potassium thioacetate11 gave 2, 3, 1', 3', 4', 6'-hexa-0-benzoyl-6-deoxy-6-(thioacetyl) sucrose (5), which was de-esterified by sodium methoxide in methanol1^, and treated with dithiothreitol13 to yield crystalline 6-deoxy-6-thiolsucrose (7) in 48% yield from the iodo de rivative.
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影响因子:
3.1
作者:
Derek M. C. Hull;P. Orchard;L. N. Owen
通讯作者:
L. N. Owen
影响因子:
3.1
作者:
J. Zikopoulos;S. H. Eklund;J. Robyt
通讯作者:
J. Robyt
DOI:
--
发表时间:
1978
期刊:
影响因子:
--
作者:
A. Kashem;M. Anisuzzaman;R. Whistler
通讯作者:
R. Whistler
影响因子:
3.1
作者:
R. Khan;M. Jenner
通讯作者:
M. Jenner
影响因子:
3.1
作者:
C. Bolton;L. Hough;R. Khan
通讯作者:
R. Khan