One-pot reductive-cyclization as key step for the synthesis of rutaecarpine alkaloids
作者:Chih-Shone Lee、Cheng-Kuo Liu、Yuen-Lin Chiang、Yen-Yao Cheng
DOI:10.1016/j.tetlet.2007.11.094
日期:2008.1
The quinazolinocarboline alkaloids including rutaecarpine (1a), euxylophoricine A (1b), and euxylophoricine C (1c) have been synthesized efficiently from the ring opened β-carboline derivative as key intermediate by a one-pot reductive-cyclization reaction. The key intermediate was prepared from tryptamine (6) following Bischler–Napieralski cyclization, benzoylation, and oxidative cleavage of the exocyclic
通过一锅还原环化反应,以开环β-咔啉衍生物为主要中间体,有效地合成了芸苔芸香碱(1a),硫氧鸟嘌呤A(1b)和硫氧鸟嘌呤C(1c)等喹唑啉基咔啉生物碱。在Bischler–Napieralski环化,苯甲酰化和环外双键的氧化裂解后,由色胺(6)制备关键中间体。