Is donor-acceptor hydrogen bonding necessary for 4,6-O-benzylidene-directed beta-mannopyranosylation? Stereoselective synthesis of beta-C-mannopyranosides and alpha-C-glucopyranosides.
Is donor-acceptor hydrogen bonding necessary for 4,6-O-benzylidene-directed beta-mannopyranosylation? Stereoselective synthesis of beta-C-mannopyranosides and alpha-C-glucopyranosides.
复制标题
DOI:
10.1021/ol8017038
复制
发表时间:
2008-11-06
期刊:
影响因子:
5.2
通讯作者:
Sharma I
中科院分区:
文献类型:
--
作者:
Crich D;Sharma I
2,3-Di-O-benzyl-4,6-O-benzylidene-thiohexopyranosides, on activation with 1-benzenesulfinyl piperidine and triflic anhydride, react with allyl silanes and stannanes, and with silyl enolethers to give C-glycosides. In mannose the β-isomers are formed selectively whereas the glucose series provides the α-anomers. This selectivity pattern parallels that of O-glycoside formation and eliminates the need to consider donor-acceptor hydrogen bonding in the formation of the O-glycosides.
登录
查看更多内容
影响因子:
3.6
作者:
Boons, GJ;Isles, S
通讯作者:
Isles, S
影响因子:
3.6
作者:
Crich, David;Vinogradova, Olga
通讯作者:
Vinogradova, Olga
影响因子:
3.1
作者:
DUBOIS, E;BEAU, JM
通讯作者:
BEAU, JM
影响因子:
3.6
作者:
Chenault, HK;Castro, A;Yang, J
通讯作者:
Yang, J
影响因子:
3.1
作者:
Nukada, T;Bérces, A;Whitfield, DM
通讯作者:
Whitfield, DM