Mimics of a R22(8) Hydrogen-Bond Dimer Motif: Synthesis and Influence on the Crystallisation of Sulfathiazole and Sulfapyridine
作者:Simon E. Lawrence、Marie T. McAuliffe、Humphrey A. Moynihan
DOI:10.1002/ejoc.200901042
日期:2010.2
synthesised as mimics of an R2/2(8) motif, which occurs in one crystal polymorph of sulfathiazole and in several polymorphs of sulfapyridine. When present in crystallisations of sulfathiazole and sulfapyridine, these mimics were found to have little or no effect under crystallisation conditions that favour the formation of polymorphs not containing R2/2(8) motifs. However, the mimics were found to completely
双 [4-(羟基氨基) 苯基磺酰基] 哌嗪 5、二酮哌嗪 10 和苯 14 被合成为 R2/2(8) 母题的模拟物,它出现在磺胺噻唑的一种晶体多晶型和磺胺吡啶的几种多晶型中。当存在于磺胺噻唑和磺胺吡啶的结晶中时,发现这些模拟物在有利于形成不含 R2/2(8) 基序的多晶型物的结晶条件下几乎没有影响。然而,发现模拟物在磺胺噻唑从 1-丙醇结晶中完全或部分抑制了形式 I 磺胺噻唑的形成,其中含有 R2/2(8) 二聚体。在磺胺吡啶的结晶中,发现模拟物促进了不包含 R2/2(8) 基序的 III 型的形成。因此,这些化合物似乎是“量身定制的”