作者:Peter H. G. Wiegerinck、Lizette Fluks、Jeannet B. Hammink、Suzanne J. E. Mulders、Franciscus M. H. de Groot、Hendrik L. M. van Rozendaal、Hans W. Scheeren
DOI:10.1021/jo960438a
日期:1996.1.1
isolated from the dried needles of Taxus baccata, was converted into six novel 7-deoxypaclitaxel analogs, 20, 21a,b, and 23-25, that have structural changes at C1, C2, and C4. A method for the introduction of the benzoyl function at C2, via a benzylidene acetal at C1-C2, will be revealed. All compounds showed very little or no measurable cytotoxic activity against some well-characterized human tumor
从干燥的红豆杉针中分离出来的紫杉碱B(3)被转化为6个新颖的7-脱氧紫杉醇类似物20、21a,b和23-25,它们在C1,C2和C4处都有结构变化。将揭示一种通过在C1-C2处通过亚苄基乙缩醛在C2处引入苯甲酰基官能团的方法。所有化合物对某些特征明确的人肿瘤细胞系几乎没有或没有可测量的细胞毒活性,这可能是由于C4处的未酰化羟基所致。