experiments. The interaction of the novel supramolecular adducts with calf thymus DNA was investigated by means of linear dichroism, ultraviolet-visible spectroscopy, thermal denaturation, and isothermal titration calorimetry experiments which revealed a bimodal binding regime with DNA intercalation favored at low [drug]/[DNA] ratios, while at higher drug loading, surface aggregation was observed. Furthermore
的手性,异构体的一系列新的富
硼的Pt II metallointercalators(专利文献2(苯)](NO 3)2:L =(X) - (1,ÿ -闭合碳-carboran -1-基)pyrid- ž -
甲醇:x = R,S ; y = 7,12 ; z = 3,4)已制备并充分表征。通过变温NMR光谱,鉴定了Δ头对尾,头对头和Λ头对尾旋转异构体的不同组合,以及Pt–N键旋转的活化自由能测定的是具有ΔG ‡的
吡啶-4-基配合物307 = 16.1±0.3 kcal mol –1和ΔG ‡ 325 = 16.2±0.5 kcal mol –1(对于1,7-碳戊基衍
生物)和ΔG ‡ 307 = 16.4±0.5 kcal mol –1和ΔG ‡ 325 = 16.2 1,12-碳戊基衍
生物的±0.5 kcal mol –1。还制备了相应的2:1主客体β-
环糊精(β-CD)加合物([PtL 2(phen)·2β-CD](NO