Molecular recognition of l-leucyl-l-alanine: enantioselective inclusion of alkyl methyl sulfoxides
作者:Motohiro Akazome、Atsushi Hirabayashi、Kousuke Takaoka、Satoru Nomura、Katsuyuki Ogura
DOI:10.1016/j.tet.2004.11.058
日期:2005.1
includes several alkyl methyl sulfoxides enantioselectively to form inclusion crystals. From single-crystal X-ray analyses of three inclusion compounds of dimethyl sulfoxide (DMSO), isobutyl methyl sulfoxide, and benzyl methyl sulfoxide, it was elucidated that Leu-Ala molecules self-assemble to form layer structures and the sulfoxides are included via hydrogen bonding in a cavity between these layers. The
一种简单的脂族二肽,1-亮氨酰-1-丙氨酸(Leu-Ala),包括对映选择性地形成形成包合物晶体的几种烷基甲基亚砜。通过对二甲基亚砜(DMSO),异丁基甲基亚砜和苄基甲基亚砜的三种夹杂物的单晶X射线分析,阐明了Leu-Ala分子自组装形成层结构,并且亚砜通过氢被包含在内在这些层之间的空腔中结合。夹杂物空腔在其每一侧具有甲基和异丁基,并且客体亚砜以其甲基朝向Leu-Ala空腔的甲基的方式放置。当亚砜的烷基比较大时,它位于空腔的剩余空间中以获得有效的晶体堆积。因此,Leu-Ala晶体中的R)-对映选择性。