Coupling of Isoprenoid Triflates with Organoboron Nucleophiles: Synthesis and Biological Evaluation of Geranylgeranyl Diphosphate Analogues
作者:YongQi Mu、Lisa M. Eubanks、C.Dale Poulter、Richard A. Gibbs
DOI:10.1016/s0968-0896(01)00390-x
日期:2002.5
The Suzuki coupling reaction has been used to introduce a methyl group derived from commercially available methylboronic acid into a vinyl triflate. This has led to a concise synthesis of all-trans-geranylgeraniol, with the key step being the palladium-catalyzed, silver-mediated methylation of triflate to give ethyl geranylgeranoate. This coupling protocol has also been used to produce the novel geranylgeranyl
Suzuki偶联反应已用于将衍生自市售甲基硼酸的甲基引入三氟甲磺酸乙烯酯中。这导致了全反式香叶基香叶醇的简明合成,关键步骤是钯催化的三氟甲磺酸银的银介导的甲基化反应,得到香叶酸香叶酯乙基酯。该偶联方案也已用于生产新颖的二磷酸香叶基香叶基酯(GGPP)类似物3-磷酸-3-苯基-3-去甲基香叶基香叶基香叶基酯(3-PhGGPP,)。我们先前开发的有机铜酸酯偶联方案已用于将环丙基和叔丁基部分引入三氟甲磺酸乙烯酯的3位。四个GGPP类似物3-磷酸-3-去甲基香叶基香叶基二磷酸酯(3-vGGPP,),3-环丙基-3-去甲基香叶基香叶基二磷酸酯(3-cpGGPP,)3-叔丁基-3-去甲基-香叶基香叶基二磷酸酯(3-tbGGPP,),然后被评估为重组酵母蛋白-香叶基香叶基转移酶I(PGGTase I)的潜在抑制剂。潜在的基于机理的抑制剂3-vGGPP和3-cpGGPP并未表现出时间依赖性的PGGTase