One-Pot Synthesis of Triazoloquinazolinones<i>via</i>Copper- Catalyzed Tandem Click and Intramolecular CH Amidation
作者:Manikandan Selvaraju、Chung-Ming Sun
DOI:10.1002/adsc.201301013
日期:2014.4.14
novel and highly efficient copper‐catalyzed tandem synthesis of triazoloquinazolinones is explored. The synthetic strategy involves a sequential one‐pot click reaction followed by aerobic intramolecularCHamidation. Two distinct and important transformations were carried out in one‐pot by employing a single cost‐effective copper catalyst. The milder, rapid and ligand‐free reaction conditions as well
A Concise Building Block Approachto a Diverse Multi-Arrayed Library of the Circumdatin Family ofNatural Products
作者:Andrew Thomas、Alfred Grieder
DOI:10.1055/s-2003-40870
日期:2003.8
Using a polymer-supported phosphine-mediated intramolecular aza-Wittig reaction in a key step of a reaction sequence a diverse library of benzodiazepine-quinazolinone alkaloids (Circumdatins) has been prepared using a novel modified Eguchi protocol. The multi-arrayed library generation strategy commenced from readily accessible benzodiazepinedione derivatives (and anthranilic acids) and all library members were purified by reverse phase preparative HPLC.
Synthesis of DNA-Interactive Pyrrolo[2,1-<i>c</i>][1,4]benzodiazepines by Employing Polymer-Supported Reagents: Preparation of DC-81
作者:Ahmed Kamal、K. Reddy、V. Devaiah、N. Shankaraiah
DOI:10.1055/s-2004-834821
日期:——
generation of combinatorial library of substituted pyrrolo[2,1-c][1,4]benzodiazepine derivatives that provides a clean and efficient preparation and does not require conventional purification techniques like chromatography. This methodology involves intra molecular aza-Wittig reaction and has been extended for the synthesis of the naturalproduct DC-81 in good overall yields.
Imides: forgotten players in the Ugi reaction. One-pot multicomponent synthesis of quinazolinones
作者:Riccardo Mossetti、Tracey Pirali、Dèsirèe Saggiorato、Gian Cesare Tron
DOI:10.1039/c1cc12067k
日期:——
Up to now, the synthesis of quinazolinones has required lengthy synthetic procedures. Here, we describe an innovative one-pot multicomponent reaction leading to highly substituted quinazolinones. We believe that this novel transformation may open the door for the generation of new and pharmacologically active quinazolinones, but, most important of all, the resurrection of the imide-Ugi scaffold paves the way for the synthesis of novel molecular architectures
A methodology based on reductive cleavage followed by cyclization, for the solid-phase synthesis of pyrrolo[2,1-c][1,4]benzodiazepines employing DIBAL-H, is described.
描述了一种基于还原裂解然后环化的方法,该方法用于采用DIBAL-H固相合成吡咯并[2,1- c ] [1,4]苯并二氮杂s。