Asymmetrized tris(hydroxymethyl)methane as precursor of iminosugars: application to the synthesis of isofagomine
作者:Giuseppe Guanti、Renata Riva
DOI:10.1016/s0040-4039(02)02492-9
日期:2003.1
A new synthetic application of asymmetrized tris(hydroxymethyl)methane (THYM*), readily obtained in both enantiomeric forms through a chemoenzymatic procedure, is reported. In this case THYM* precursor 3 was elaborated by ring closing metathesis into some enantiopure branched tetrahydropyridines, that hake been used as precursors of the potent glycosidase inhibitor isofagomine 28. (C) 2002 Elsevier Science Ltd. All rights reserved.
Asymmetrized tris(hydroxymethyl)methane as a precursor of N- and O-containing 6-membered heterocycles through ring-closing metathesis
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.