报道了一种新的和更有效的10 H -Indolo [3,2- b ]喹啉(quindoline)的合成。合成涉及3-氨基喹啉与二乙酸三苯基铋的N-芳基化,然后使用乙酸钯(II)进行氧化环化。还开发了喹啉的选择性N-烷基化方法。在环丁砜中在N-5上进行烷基化,而在氢氧化钾存在下在丙酮中在N-10上进行烷基化。还制定了顺序的N-5-和N-10双烷基化程序。
Synthesis and Biological Evaluation of Analogues of Cryptolepine, an Alkaloid Isolated from the Suriname Rainforest
作者:Shu-Wei Yang、Maged Abdel-Kader、Stan Malone、Marga C. M. Werkhoven、Jan H. Wisse、Isia Bursuker、Kim Neddermann、Craig Fairchild、Carmen Raventos-Suarez、Ana T. Menendez、Kate Lane、David G. I. Kingston
DOI:10.1021/np990035g
日期:1999.7.1
Bioassay-guided fractionation of an extract of a mixture of Microphilis guyanensis and Genipa americanacollected in the rainforest of Suriname yielded the known alkaloid cryptolepine (2) as the major active compound in a yeast bioassay for potential DNA-damaging agents; the same compound was later reisolated from M. guyanensis. The structure of cryptolepine was identified unambiguously by spectral
Convenient synthesis of 10 H -indolo[3,2- b ]quinolines and 6 H -indolo[2,3- b ]quinolines by sequential chemoselective Suzuki reaction followed by double C-N coupling
作者:Ghazwan Ali Salman、Sophie Janke、Ngo Nghia Pham、Peter Ehlers、Peter Langer
DOI:10.1016/j.tet.2018.01.010
日期:2018.3
A convenient and regioselective synthesis of two series of indolo[2,3-b]quinolines, namely 10H-indolo[3,2-b]quinolines and 6H-indolo[2,3-b]quinolines, has been developed. The synthesis, proceeds in moderate to high yields, involving chemoselective palladium catalyzed Suzuki reaction of 2,3-dihaloquinolines with 2-bromophenylboronic acid, followed by a double Buchwald-Hartwig C-N coupling.
已经开发了方便的区域选择性合成两个吲哚[2,3- b ]喹啉系列,即10 H-吲哚[ 3,2- b ]喹啉和6 H -indolo [2,3- b ]喹啉。合成以中等至高收率进行,涉及化学选择性钯催化的2,3-二卤代喹啉与2-溴苯基硼酸的Suzuki反应,然后进行双Buchwald-Hartwig CN偶联。
Systematic Photoassisted Access to Designer Polyheterocycles via Modular Blocks and Scaffolding
作者:Tina A. Holt、Ivan M. Novitskiy、Andrei G. Kutateladze
DOI:10.1021/acs.orglett.3c04186
日期:2024.1.26
Diverse polyheterocycles are accessed via scaffolded photoassisted synthesis involving decarboxylative aromatization of the primary photoproducts from intramolecularcycloadditions of azaxylylenes and tethered heteroaromatic unsaturated pendants.