作者:N. Vijayakumari,、K. Shireesha、Lingaiah Nagarapu
DOI:10.1515/hc.2006.12.2.115
日期:2006.1
(±)Methyl-2-(2-methyI-2,3-dihydrobenzo[£]furan-5-yl)-3-methylbutanoate (5a) and (±)methyl-2-(2,2-dimethyl-3-hydrobenzo[£]furan-5-yl)-3-methylbutanoate (5b) have been synthesized from methyl-2-(4-hydroxyphenyl)-3-methylbutanoate (1) via Claisen rearrangement and PTS, in good yield. Introduction In view of the general interest in the pharmacological and biological activities of furanobenzo systems and
(±)Methyl-2-(2-methyI-2,3-dihydrobenzo[£]furan-5-yl)-3-methylbutanoate (5a) 和 (±)methyl-2-(2,2-dimethyl-3-)已经从甲基-2-(4-羟基苯基)-3-甲基丁酸酯 (1) 通过 Claisen 重排和 PTS 以良好的收率合成了氢苯并[{]呋喃-5-基)-3-甲基丁酸酯 (5b)。引言鉴于人们普遍对呋喃苯并苯系统和天然氧杂环的药理和生物活性感兴趣。“天然二氢苯并呋喃是同手性的。” 我们在这里首次报道了迄今为止未报道的'(±)methyl-2-(2-methyI-2,3dihydrobenzo[0]furan-5-yl)-3-methylbutanoate (5a) 和 (±)methyl-2- (2,2-二甲基-3氢苯并[Z>]呋喃-5-基)-3-甲基丁酸酯(5b)已由甲基-2-(4羟基苯基