Oxobenzofuranylidene-dihydroindolones of formulae trans-(Ia) and cis-(Ib)
and of formulae trans-(IIa) and cis-(IIb)
wherein
A1 and A2 are each independently of the other unsubstituted or mono- to tetra-substituted ortho-C6-C18arylene, and R1 is hydrogen or an organic radical, with the proviso that when R1 is hydrogen and A2 is 1,2-phenylene, A1 is not 9,10-anthraquinon-1,2-ylene, 4-chloro-3,5-dimethyl-1,2-phenylene or 3,5-dimethyl-1,2-phenylene, processes for their preparation and the use thereof.
Application of nanoparticle mediated N-arylation of amines for the synthesis of pharmaceutical entities using vit-E analogues as amphiphiles in water
作者:Atul Kumar、Ajay Kumar Bishnoi
DOI:10.1039/c4ra15267k
日期:——
The first CuI-nanoparticle catalyzed inter and intramolecular N-arylation of amines using vitamin E analogues as amphiphiles was developed in water and is extended to azoles, substituted indoles, a bioactive natural product and intermediates of pharmaceutical entities.
Symmetrical and Asymmetrical Bisphosphonate Esters. Synthesis, Selective Hydrolysis, and Isomerization
作者:Wafaa M. Abdou、Neven A. Ganoub、Amin F. Fahmy、Abeer A. Shaddy
DOI:10.1007/s00706-005-0403-y
日期:2006.1
asymmetrical or symmetrical bisphosphonates ( BP s). In the second approach, the same halocompounds were reacted with tetraethyl methyl-1,1-bisphosphonate to give the requisite BP s. Partial and complete hydrolysis of the prepared BP s were also investigated. The products contain functional groups advantageous for further synthetic modification as structural units for coupling with the drug.
概述了两个简单而有效的一锅法,用于合成一系列α-支化的N-杂环取代的甲烷-1,1-双膦酸酯。在第一种方法中,使母体卤代底物与氰基甲基膦酸酯反应,然后与二烷基膦酸酯反应,得到不对称或对称的双膦酸酯( BPs )。在第二种方法中,相同的卤代化合物与1,1,1-二膦酸四乙酯四乙酯反应生成所需的 BP 。还研究了所制备的 BP 的部分和完全水解 。产物包含有利于进一步合成修饰的官能团作为与药物偶联的结构单元。
The structure and properties of some indolic constituents in Couroupita guianensis aubl
作者:Jan Bergman、Jan-Olof Lindström、Ulf Tilstam
DOI:10.1016/s0040-4020(01)96609-8
日期:1985.1
Extraction of the dried fruits from the cannon ball tree, Couroupita guianensisAubl., yielded 6,12-dihydro-6, 12-dioxoindolo[2,1-b]quinazoline (tryptanthrin), 1a as well as indigo (7) indirubin (8a) and isatin. Compound 1a could readily be synthesized by condensation of isatin with isatoic anhydride (6) in pyridine.
从炮弹球树Couroupita guianensis Aubl。中提取干果,得到6,12-dihydro-6、12-dioxoindolo [2,1- b ] quinazoline(tryptanthrin),1a和靛蓝(7)靛玉红(8a)和isatin。化合物1a可以容易地通过在吡啶中将Isatin与isatoic酸酐(6)缩合来合成。
Nukleophile Reaktionen an 2-Phenylindolenin-3-onen
作者:Jean-Marie Adam、Tammo Winkler
DOI:10.1002/hlca.19840670820
日期:1984.12.19
Nucleophilic Reactions on 2-Phenylindolenin-3-ones