physiological pH, with citrate being the most effective competitor for picolinate. All of the complexes trigger glucose uptake and degradation by simian virus modified mice fibroblasts at non-toxic concentrations (<100 microM), with 2 a, [VO(2)(pic)(2)](-) and [VO(2)(dipic)](-) being at least as effective as insulin. Vanadium uptake by the cells is most effective in the case of 2 a. 2 a also effectively inhibits
5-羰基烷氧基
吡啶甲酸(5 ROpicH,R = Me,Et,iPr,sBu; 1 ad)与
硫酸氧钒反应生成配合物[VO(H(2)O)(5 ROpic)(2)],2 ad ,在赤道位置具有H(2)O和一个picolinato
配体,而第二个
吡啶甲酸盐占据了赤道(N)和轴向(O)位置。1 a与[NH(4)] [VO(3)]反应生成[NH(4)] [VO(2)(5 Meopic)(2)],[NH(4)]-3,其中
吡啶甲酸酯的N个官能团被转化为双键,顺位的氧代基团。配合物1 aH(2)O,1 b,1 c,2 a.3.5 H(2)O和[NH(4)]-3.4 H(2)O的结构已得到表征。对系统VO(2 +)-1a的详细pH电位溶液形态分析表明,在pH 2和6之间,VO(5 OMepic)(2)占主导地位,具有相同的配位模式,由EPR光谱法证明,如结晶固态。在含有生理浓度的低分子量
生物结合剂(B)的