作者:Sven Adolph、Serge A Poulet、Georg Pohnert
DOI:10.1016/s0040-4020(03)00382-x
日期:2003.4
α,β,γ,δ-Unsaturated aldehydes have gained increasing attention since 2,4-decadienal and 2,4,7-decatrienal were isolated from the diatom Thalassiosira rotula and characterized as cell antiproliferative metabolites. Structurally related α,β,γ,δ-unsaturated aldehydes were found in this alga as well as in other diatom species. We present a short and universal synthesis of this compound class along with
自从旋转硅藻Thalassiosira rotula分离出2,4-癸二烯醛和2,4,7-十二碳烯醛并表征其为细胞抗增殖代谢产物以来,α,β,γ,δ-不饱和醛类受到越来越多的关注。在该藻类以及其他硅藻物种中发现了与结构相关的α,β,γ,δ-不饱和醛。我们提供了该化合物类别的简短而通用的合成方法,以及对抑制海胆卵裂的潜力的结构活性研究。Pd 0-或Co II介导的5-碘-戊-2,4-二烯醛与有机锌的交叉偶联可从该通用前体快速灵活地合成许多醛。前体双键系统的立体化学在偶联过程中得以保留。生物测定法表明,与短链脂族同系物和共轭双系统的ω-氧代酸相比,侧链的极性对于抗增殖活性非常重要,其中2,4-癸二烯是最活泼的化合物。相反,双键几何形状对生物活性没有影响。α,β-不饱和2 E-癸烯也具有很高的活性,而在类似链长的饱和醛的情况下,活性降低。1-癸醇,2-癸酮和癸酸没有活性。