作者:Jean-Marc Lapierre、Konstantinos Skobridis、Dieter Seebach
DOI:10.1002/hlca.19930760702
日期:1993.11.3
Double aldols, formally derived from acetic acid and two different aldehydes, as obtained by addition of the enolate of (R,R)-2-(tert-butyl)-6-methyl-1,3-dioxan-4-one (A) to various aldehydes, are reduced to triols which are actually substituted chiral ‘tris(hydroxymethyl)methanes’ (see B and 3–8). Etherifications of the three OH groups of these triols with functionalized halides (allyl, 4-(silyloxy)but-2-en-l-yl
由(R,R)-2-(叔丁基)-6-甲基-1,3-二恶烷-4-酮(A)还原为各种醛,还原为三醇,三醇实际上是取代的手性“三(羟甲基)甲烷”(见B和3-8)。用官能化的卤化物(烯丙基,4-(甲硅烷氧基)丁-2-烯-1-基,4-取代的苄基)将这些三醇的三个OH基醚化,并用五-4-烯丙基和3,5-二硝基苄基氯进行酯化,然后进行功能组操作,导致潜在的中心部分14–30用于构建手性树状大分子:制备的结构单元在核心单元之间包含所需的``间隔基'',以及三个乙烯基,三个芳基溴化物基团,三个醇或酚OH基团,三个甲磺酸酯基团,三个酯基团或在其分支的末端有六个芳基氨基。所有新化合物均以制备规模获得,并进行了全面表征(包括元素分析)。