Synthesis and molecular structure of novel 4-aryloctahydropyrido-[1,2-<i>c</i>]pyrimidine derivatives
作者:Franciszek Herold、Jerzy Kleps、Beata Szczȩsna、Romana Anulewicz-Ostrowska
DOI:10.1002/jhet.5570390424
日期:2002.7
A series of new 4-aryloctahydropyrido[1,2-c]pyrimidine-1,3-diones 6a,b,d-h and j were synthesized by intramolecular cyclization of α-aryl-α-(1-ethoxycarbonyl-2-piperidyl)-acetamide derivatives 5a,b,d-h and j. The structures of compounds were determined by 1H and 13C nmr spectroscopy. Nmr and X-ray diffraction data indicate that the configuration at the C4, C4a stereocenters constitute RR and SS pair
通过α-芳基-α-(1-乙氧基羰基-2-哌啶基)-的分子内环化反应合成了一系列新的4-芳基氢吡啶并[1,2- c ]嘧啶-1,3-二酮6a,b,dh和j。乙酰胺衍生物5a,b,dh和j。化合物的结构通过1 H和13 C nmr光谱确定。Nmr和X射线衍射数据表明C4,C4a立体中心的构型构成RR和SS对。