Synthesis of Naphtho[2,3-b]- and Naphtho[1,2-b]-fused Thieno[2,3-d][1]benzoxepins and Thieno[2,3-d][1]benzothiepins
作者:Ivana Ozimec Landek、Dijana Pešić、Rudolf Trojko、Maja Devčić Bogdanović、Mladen Merćep
DOI:10.3987/com-10-12014
日期:——
four novel classes of structurally related fused hetero-pentacyclic compounds, naphtho[2,3-b]thieno[2,3-d][1]benzothiepins (Ia), naphtho[1,2-b]thieno[2,3-d][1]benzothiepins (IIa), naphtho[2,3-b]thieno[2,3-d][1]benzoxepins (Ib,c) and naphtho[1,2-b]thieno[2,3-d][1]benzoxepins (IIb,c), is described. The key intermediates were the tetracyclic ketones, benzo[b]-naphtho[f]-fused thiepinones 1a,b and oxepinones
合成四种新型结构相关的稠合杂五环化合物萘并[2,3-b]噻吩并[2,3-d][1]苯并噻吩(Ia),萘并[1,2-b]噻吩并[2, 3-d][1]benzothiepins (IIa)、naphtho[2,3-b]thieno[2,3-d][1]benzoxepins (Ib,c) 和naphtho[1,2-b]thieno[2,描述了 3-d][1]benzoxepins (IIb,c)。关键中间体是四环酮,苯并[b]-萘并[f]-稠合噻匹酮 1a,b 和 oxepinone 1c-f,由相应的 2-萘硫基-(2a,b) 和 2-萘氧基-的分子内环化形成。取代的 (2c-f) 苯乙酸衍生物。酮 1a-f 与 Vilsmeier 试剂反应得到 β-氯乙烯醛 10a-f,其容易与 2-巯基乙酸乙酯环化形成苯并萘并噻吩 11a、b 和苯并-萘并噻吩的噻吩并[2,3-d]-稠合衍生物。萘并氧杂甙