N-Tetrachlorophthaloyl (TCP) for ready protection/deprotection of amino sugar glycosides.
N-Tetrachlorophthaloyl (TCP) for ready protection/deprotection of amino sugar glycosides.
复制标题
N-四氯邻苯二甲酰 (TCP) 用于氨基糖苷的快速保护/脱保护。
DOI:
10.1016/s0968-0896(96)00173-3
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发表时间:
1996
影响因子:
3.5
通讯作者:
Fraser-Reid,B
中科院分区:
文献类型:
--
作者:
Debenham,JS;Debenham,SD;Fraser-Reid,B
The tetrachlorophthaloyl (TCP) group can be utilized when imidic protection of an amine is desired and durability of the protecting group to conditions ranging from mildly basic to harshly acidic is required. Installation can be accomplished in two steps by treating the free base with the commercially available TCP anhydride, and then closing the imidic ring with acetic anhydride and pyridine. Cleavage is effected by 2–4 eq of ethylenediamine under very mild conditions under which esters and glycopeptides have been shown to be stable, and racemization of amino acid residues does not occur. Unsubstituted phthalimides, even within the same molecule, are also unaffected during TCP cleavage. TCP protecting groups serve as β-directors on donors and can also be present on acceptor species during electrophilic couplings in oligosaccharide synthesis.
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DOI:
--
发表时间:
1993
期刊:
影响因子:
--
作者:
F. Koeman;J. Meissner;H. R. P. VAN RITTER;J. Kamerling;J. Vliegenthart
通讯作者:
J. Vliegenthart
DOI:
--
发表时间:
1995
期刊:
影响因子:
--
作者:
J. Castro;R. Schmidt
通讯作者:
R. Schmidt
影响因子:
15
作者:
A. L. Handlon;B. Fraser
通讯作者:
B. Fraser
影响因子:
1
作者:
J. Merritt;J. S. Debenham;B. Fraser
通讯作者:
B. Fraser
影响因子:
1
作者:
F. Dasgupta;P. Garegg
通讯作者:
P. Garegg