The synthesis of new framework structures containing rigidly-linked pyrimidines suitable for uracil and cytosine elaboration
作者:Ronald N Warrener、Mirta Golic、Douglas N Butler
DOI:10.1016/s0040-4039(98)00866-1
日期:1998.6
Fusednorbornenes and tricyclo[4.2.2.12,5]undec-3,7,9-trienes containing 2,4-dichloropyrimidine and 2,4-dimethoxy pyrimidine units are coupled with norbornadiene, benzonorbornadienes and dimethoxynaphthaleno norbornadienes using s-tetrazines or ACE coupling techniques to afford framework structures where different geometrical interrelationships can be attained between the chromophores.
1,3-Diazaanthracenes: photochemical [4π+4π] cycloadditions with cyclopenta-1,3-diene and dimerisations to new bis-pyrimidines
作者:Ronald N Warrener、Mirta Golic、Douglas N Butler
DOI:10.1016/s0040-4039(98)00865-x
日期:1998.6
Ultra-violet irradiation of 2,4-dichloro-1,3-diazaanthracene 2 or 2,4-dimethoxy-1,3-diazaanthracene 3 with cyclopentadiene yields single [4π+4π] cycloadducts, which can be transformed into the fused uracil and related pyrimidines by chemical modification of the chlorine or methoxy substituents; [4π+4π] head to head anti-dimers 17 and head to tail anti-dimers 19 are the exclusive products from solution
The Synthesis of Geometric Variants of Rigidly-Linked Uracil-{Spacer}-Uracil and Uracil-{Spacer}-Effector Molecules Using Block Assembly Methods
作者:R. N. Warrener、D. N. Butler、M. Golic
DOI:10.1080/07328319908044631
日期:1999.11
Pyrimidine-containing building BLOCKs, formed from the thermal reaction of norbornadiene with 2,4-dimethoxy-1,3-diazaanthracene, are linked together using LEGO-like assembly methods and chemically modified (hydrolysis) to form rigidly linked bis-uracils in which the pyrimidine rings can be aligned in northern or southern geometries and HH or HT variants. Similar methods are used to link pyrimidine BLOCKs to chromophore-containing BLOCKs to access rigid uracil-spacer}-chromophore molecules which are available in a variety of different geometries.
Legrand; Lepage, Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, 1952, vol. 235, p. 303