34549-69-4Relevant articles and documents
Campestarenes: New building blocks with 5-fold symmetry
Nam, Seong,Ware, David C.,Brothers, Penelope J.
, p. 6460 - 6469 (2018/10/02)
Campestarene is a planar, shape-persistent macrocycle with 5-fold symmetry. A range of derivatives bearing peripheral functional groups suitable for generating supramolecular interactions has been designed and synthesised for potential applications in creating 2D quasicrystal molecular assemblies. The new campestarene derivatives bear ester, carboxylic acid, methoxy, bromo, 4-pyridyl, 4-cyanophenyl and 4-phenyl carboxylic acid groups, including further derivatives of the latter two bearing alkyl chains on the phenyl groups to improve solubility. The campestarene derivatives were prepared by reductive condensation of phenol precursors bearing nitro and formyl groups using Na2S2O4. The target functional groups were installed either by pre-cyclisation derivatisation or by synthesis of methoxy-substituted campestarene and subsequent derivatisation. The cyclisation reaction is tolerant of the functional groups introduced. The ten new campestarene derivatives were characterised by NMR spectroscopy and MALDI-TOF MS, although the poor solubility of some examples precluded their detailed characterisation.
Quinazoline derivatives with anti-tumour activity
-
, (2008/06/13)
The invention concerns quinazoline derivatives of Formula I wherein each of m, R1, n, R2 and R3 have any of the meanings defined in the description; processes for their preparation, pharmaceutical compositions containing them and their use in the manufacture of a medicament for use as an anti-invasive agent in the containment and/or treatment of solid tumour disease.
Nitrodecarboxylation and nitrodeformylation of some electron-rich benzoic acids and benzaldehydes
Cotelle, Philippe,Catteau, Jeanpierre
, p. 4105 - 4112 (2007/10/03)
The nitration ipso to a carboxylic or formyl group of disubstituted and trisubstituted benzoic acids and benzaldehydes using nitric acid in acetic acid is described.