Synthesis of enantiomerically pure 4-aryl-3,4-dihydropyrimidin-2(1 H )-ones via enzymatic resolution: preparation of the antihypertensive agent ( R )-SQ 32926 †Synthesis and reactions of Biginelli compounds, part 20; for part 19, see: Kappe, C. O.; Shishkin, O. V.; Uray, G.; Verdino, P. Tetrahedron 2000, 56, 1859–1862. †
作者:Barbara Schnell、Ulrike T Strauss、Petra Verdino、Kurt Faber、C.Oliver Kappe
DOI:10.1016/s0957-4166(00)00081-1
日期:2000.4
A practical and short synthesis of the enantiomerically pure dihydropyrimidone antitypertensive agent (R)-SQ 32926 has been developed. The key step in the synthesis is the enzymatic resolution of an N3-acetoxymethyl-activated dihdropyrimidone precursor by Thermomyces lanuginosus lipase. The absolute configuration of (R)-SQ 32926 was confirmed by circular dichroism spectroscopy. (C) Elsevier Science Ltd. All rights reserved.