Asymmetrized tris(hydroxymethyl)methane as a precursor of N- and O-containing 6-membered heterocycles through ring-closing metathesis
作者:Luca Banfi、Giuseppe Guanti、Monica Paravidino、Renata Riva
DOI:10.1039/b502952j
日期:——
A novel synthetic application of asymmetrized tris(hydroxymethyl)methane (THYM*)
1, obtained in both enantiomeric forms in high e.e. via a chemoenzymatic procedure, is described. Starting from the common precursor 3, N- and O-containing 6-membered heterocycles have been prepared exploiting ring-closing metathesis as the key step. Possible elaborations of the double bond in 6 and 28 have been explored and, in the case of 28, conversion into the glycosidase inhibitor isofagomine 53 has been achieved.
描述了一种新颖的合成应用,即不对称三(羟甲基)甲烷(THYM*)1,采用化学酶法合成获得两种对映异构体,具有较高的对映体富集度。以常见前体3为起始材料,利用环闭合重排作为关键步骤合成了含氮和含氧的六元杂环。探讨了对6和28中双键的可能改造,在28的情况下,成功转化为糖苷酶抑制剂异伐果明53。