An efficient metal‐free, (NH4)2S2O8 mediated intramolecularoxidativecyclization for the construction of fused polycyclic quinazolinone derivatives under mild conditions was disclosed. This method provides an efficient and facile approach to the synthesis of polycyclic quinazolinone derivatives (> 40 examples), as well as the natural products tryptanthrin, rutaecarpine, and their analogues.
公开了在温和条件下用于构建稠合多环喹唑啉酮衍生物的高效无金属,(NH 4)2 S 2 O 8介导的分子内氧化环化反应。该方法为合成多环喹唑啉酮衍生物(> 40个实例)以及天然产物色胺酮,芸苔芸香碱及其类似物提供了一种高效简便的方法。
New topoisomerases inhibitors: Synthesis of rutaecarpine derivatives and their inhibitory activity against topoisomerases
作者:Seung Ill Kim、Seung Ho Lee、Eung-Seok Lee、Chong-Soon Lee、Yurngdong Jahng
DOI:10.1007/s12272-012-0504-1
日期:2012.5
A series of rutaecarpine derivatives were prepared by employing previously reported methods and their inhibitoryactivitiesagainst topoisomerase I and II were evaluated. Among them, strongly cytotoxic 10-bromorutaecarpine and 3-chlororutaecarpine showed strong inhibitoryactivitiesagainst topo I and II.
采用先前报道的方法制备了一系列芸香碱衍生物,并评估了它们对拓扑异构酶 I 和 II 的抑制活性。其中,强细胞毒性的 10-bromorutaecarpine 和 3-chlororutaecarpine 对拓扑 I 和 II 显示出强烈的抑制活性。
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
Expedious and practical synthesis of the bioactive alkaloids rutaecarpine, euxylophoricine A, deoxyvasicinone and their heterocyclic homologues
作者:Abdulkareem Hamid、Abdelhakim Elomri、Adam Daïch
DOI:10.1016/j.tetlet.2006.01.031
日期:2006.3
deoxyvasicinone (3), is reported from suitable aromatic amino acids 7 or corresponding aromatic amino esters 8 and imino-thioethers 5 or 6 in a one-step sequence in moderate to good yields. The key step of this methodology is based on an intramolecular aza-displacement of a methylthio group followed by spontaneous cyclodehydration. Furthermore, when aromatic amino esters 8 were used instead of amino acids