The quinazolinocarbolinealkaloids 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
A New and Facile Synthesis of Rutaecarpine Alkaloids
作者:Chih-Shone Lee、Cheng-Kuo Liu、Yen-Yao Cheng、Che-Ming Teng
DOI:10.3987/com-08-11606
日期:——
efficiently from the ring opened β-carboline derivatives (3a-d) as key intermediates. A unique one-pot reductive-cyclization as key reaction furnished the synthesis of rutaecarpine alkaloids in excellent yields. The key intermediates (3a-d) were prepared from tryptamine following acylation, Bischler-Napieralski cyclization, benzoylation, and oxidative cleavage of the exocyclic double bond. This new synthetic