Iodomethyl Group as a Hydroxymethyl Synthetic Equivalent: Application to the Syntheses of d-manno-Hept-2-ulose and l-Fructose Derivatives
摘要:
The one-carbon elongation of aldoses to ketoses using iodomethyllithium as the key reagent in the homologation step is exemplified by the preparation of two carbohydrates of chemical and biological interests: (D)-manno-hept-2-ulose from (D)-mannose and (L)-fructose from (L)-arabinose.
Iodomethyl Group as a Hydroxymethyl Synthetic Equivalent: Application to the Syntheses of d-manno-Hept-2-ulose and l-Fructose Derivatives
摘要:
The one-carbon elongation of aldoses to ketoses using iodomethyllithium as the key reagent in the homologation step is exemplified by the preparation of two carbohydrates of chemical and biological interests: (D)-manno-hept-2-ulose from (D)-mannose and (L)-fructose from (L)-arabinose.
The first isolated polyoxomolybdate-tripeptide complex, [Mo4O12(glycylglycylglycine)2], is an infinite centrosymmetric complex of the Mo4O12 unit in which a pair of Mo atoms is singly bridged by a glycylglycylglycine carboxylate group as a bidentate ligand resulted in four edge-shared MoO6 octahedral linkage. [Mo4O12]n exhibits a corrugated sheet-belt structure of four co-planar Mo atoms linked by four triply-bridging O atoms with cis-configurated two terminal O atoms for each Mo atom.
第一个分离出的多氧钼酸盐-三肽复合物[Mo4O12(甘氨酰甘氨酰)2]是一个无限中心对称的 Mo4O12 单元复合物,其中一对 Mo 原子作为双齿配体与甘氨酰甘氨酰羧酸基团单桥,形成四个边缘共享的 MoO6 八面体连接。[Mo4O12]n呈现出一种波纹状的片带结构,由四个共平面的Mo原子通过四个三桥O原子连接而成,每个Mo原子都有顺式配置的两个末端O原子。
SABURI, MASAHIKO;ISHII, YOUICHI;KAJI, NOBUTARO;AOI, TSUNEO;SASAKI, ICHIRO+, CHEM. LETT.,(1989) N, C. 563-566
Iodomethyl Group as a Hydroxymethyl Synthetic Equivalent: Application to the Syntheses of <scp>d</scp>-<i>m</i><i>anno</i>-Hept-2-ulose and <scp>l</scp>-Fructose Derivatives
作者:Bernard Bessières、Christophe Morin
DOI:10.1021/jo0342166
日期:2003.5.1
The one-carbon elongation of aldoses to ketoses using iodomethyllithium as the key reagent in the homologation step is exemplified by the preparation of two carbohydrates of chemical and biological interests: (D)-manno-hept-2-ulose from (D)-mannose and (L)-fructose from (L)-arabinose.