Synthetic Studies of Tedanolide, a Marine Macrolide Displaying Potent Antitumor Activity. Stereoselective Synthesis of the C(13)−C(23) Segment
作者:Yasuhiro Iwata、Keiji Tanino、Masaaki Miyashita
DOI:10.1021/ol050569a
日期:2005.6.1
displaying significant cytotoxicity against KB and PS tumor cell lines, is described which involves two stereoselective epoxidations of regioisomeric trisubstituted double bonds and a stereospecific S(N)2' methylation reaction of a trans-gamma,delta-epoxy-cis-alpha,beta-unsaturated ester as the key steps.
[结构:参见正文]描述了泰达内酯(1)的C13-C23片段的高度立体选择性合成,该化合物是一种从加勒比海海绵Tedania ignis分离的18元大环内酯,对KB和PS肿瘤细胞系表现出显着的细胞毒性,涉及区域异构体三取代双键的两个立体选择性环氧化和反式-γ-δ-环氧-顺式-α-β-不饱和酯的立体特异性S(N)2'甲基化反应是关键步骤。