“Reverse chromophore” of actinomycin d. Synthesis of 2-substituted 7-amino-8<i>H</i>-8-oxo-oxazolo[4,5-<i>b</i>] phenoxazine ring system
作者:Sisir K. Sengupta、S. Karin Tinter
DOI:10.1002/jhet.5570170104
日期:1980.1
physico-chemical properties of a new 7-amino-8H-8-oxo-oxazolo[4,5-b]-phenoxazine ring system (8a and 8b) are reported. These tetracyclic heteroaromatic rings posses an extra oxazolo ring fused to the phenoxazinone chromophore observed in actinomycin D (1b). These tetracyclic compounds (8a-8b) possess a structure in which the orientation of the A and B rings in 1b are “reversed”. Since DNA binding and the resulting
报道了新的7-氨基-8 H -8-氧代-恶唑并[4,5- b ]-吩恶嗪环系统(8a和8b)的合成和理化性质。这些四环杂芳族环具有一个额外的恶唑环,与放线菌素D (1b)中观察到的苯恶嗪酮发色团稠合。这些四环化合物(8a-8b)具有1b中的A环和B环的取向被“反转”的结构。由于DNA结合和抗肿瘤抗生素1b的特异性被认为取决于P(α)和P(β)的空间方向,相对于1b B环的功能这些新化合物代表了一种研究AMD与DNA相互作用的新颖方法。