Assembly of Carbohydrates on a Nickel(II) Center by Utilizing <i>N</i>-Glycosidic Bond Formation with Tris(2-aminoethyl)amine (tren). Syntheses and Characterization of [Ni{<i>N</i>-(aldosyl)-tren}(H<sub>2</sub>O)]<sup>2+</sup>, [Ni{<i>N</i>,<i>N</i>‘-bis(aldosyl)-tren}]<sup>2+</sup> and [Ni{<i>N</i>,<i>N</i>‘,<i>N</i>‘‘-tris(aldosyl)-tren}]<sup>2+</sup>
作者:Tomoaki Tanase、Mayumi Doi、Reiko Nouchi、Masako Kato、Yutaka Sato、Katsuaki Ishida、Kimiko Kobayashi、Tosio Sakurai、Yasuhiro Yamamoto、Shigenobu Yano
DOI:10.1021/ic960012e
日期:1996.1.1
hydrogen bondings between the sugar moieties as observed in 2 and 3 should be responsible for the assembly of two sugar molecules on the metal center. Reactions of tris(N-aldosyl-2-aminoethyl)amine with nickel(II) salts gave the tris(sugar) complexes, [Ni(N,N',N"-(aldosyl)(3)-tren)]X(2) (aldosyl = D-mannosyl, X = Cl (6a), Br (6b); L-rhamnosyl, X = Cl (7a), Br (7b); D-glucosyl, X = Cl (9); maltosyl, X = Br
[Ni(tren)(H(2)O)(2)] X(2)的反应(tren =三(2-氨基乙基)胺; X = Cl(1a),Br(1b); X(2)= SO(4)(1c))与甘露糖型醛糖具有2,3-顺式构型(D-甘露糖和L-鼠李糖),得到双(N-醛糖基-2-氨基乙基)(2-氨基乙基)胺}镍(II)配合物,[Ni(N,N'-(醛糖基)(2)-tren)] X(2)(醛糖基= D-甘露糖基,X = Cl(2a),Br(2b),X( 2)= SO(4)(2c);醛糖基= L-鼠李糖基,X(2)= SO(4)(3c))。通过X射线晶体学确认1c的结构为单核[Ni(II)N(4)O(2)]配合物,其中tren充当四齿配体(1c.2H(2)O:正交晶系,Pbca ,a = 15.988(2),b = 18.826(4),c = 10.359(4),V = 3118埃(3),Z = 8,R = 0.047,和R(w)=