Synthesis of Substituted 1,2,3,4-Tetrahydro-1-thiacarbazole and Spiro[pyrrolidinone-3,3′-indolinones] through a Common Intermediate Obtained by Condensation of Indolin-2-one, (Aryl)aldehydes, and Meldrum's Acid
作者:Fabien Cochard、Marie Laronze、Élise Prost、Jean-Marc Nuzillard、Franck Augé、Christian Petermann、Philippe Sigaut、Janos Sapi、Jean-Yves Laronze
DOI:10.1002/1099-0690(200210)2002:20<3481::aid-ejoc3481>3.0.co;2-c
日期:2002.10
Trimolecular adducts resulting from condensation between indolin-2-one (or indoline-2-thione), (aryl)aldehydes, and Meldrum’s acid are useful intermediates for the synthesis of either 1,2,3,4-tetrahydro-1-thiacarbazoles or spiro[pyrrolidino-3,3′-oxindoles] related to the natural product horsfiline. These latter compounds were obtained in a three-step procedure characterized by acyl azide formation
由 indolin-2-one(或 indoline-2-thone)、(芳基)醛和 Meldrum 酸之间的缩合产生的三分子加合物是合成 1,2,3,4-四氢-1-噻咔唑或螺 [pyrrolidino-3,3'-oxindoles] 与天然产物 horsfiline 相关。这些后一种化合物是通过三步法获得的,其特征在于酰基叠氮化物的形成、Curtius 重排和随后的热螺环化。螺环衍生物的相对立体化学是通过比较 NOESY 数据和计算的构象分析来确定的。(© Wiley-VCH Verlag GmbH, 69451 Weinheim, Germany, 2002)