作者:Mykhaylo A. Potopnyk、Sławomir Jarosz
DOI:10.1002/ejoc.201300427
日期:2013.8
New “unsymmetrical”, sucrose-based diaza-crown ethers have been designed and prepared from monosilylated hexa-O-benzylsucrose derivatives. The enantioselective complexation of phenylethylammonium cations by these receptors was evaluated. It was demonstrated that the introduction of the amino group at the 6-position (glucose moiety) in sucrose increases the association constant for the S cation, but
新的“不对称”、基于蔗糖的二氮杂冠醚已被设计并由单甲硅烷基化六-O-苄基蔗糖衍生物制备而成。评估了这些受体对苯乙基铵阳离子的对映选择性络合。结果表明,在蔗糖的 6 位(葡萄糖部分)引入氨基会增加 S 阳离子的结合常数,但会降低对映选择性。另一方面,在蔗糖的 6' 位(果糖部分)引入氨基会显着增加 Ka 值,同时保持高对映选择性。