作者:Micha�l D. B. Fenster、Gregory R. Dake
DOI:10.1002/chem.200400749
日期:2005.1.7
An asymmetric formal synthesis of fasicularin (1) is described. This natural product, isolated from the extracts of the marine invertebrate Nephteis fasicularis, has shown modest cytotoxicity towards Vero cells. Fasicularin is among only two members of the cylindricine family of natural products, along with lepadiformine (2), to possess a trans A-B ring junction. Key steps of this approach to 1 involve
描述了fasicularin(1)的不对称形式合成。从海生无脊椎动物Nephteis fasicularis的提取物中分离得到的这种天然产物对Vero细胞显示出适度的细胞毒性。Fasicularin属于天然产品cylindricine家族中仅有的两个成员,与lepadiformine(2)一起具有反式AB环连接。此方法的关键步骤包括将甲氧基环氧化物的半松果醇重新排列为5至6,通过使用烯醇三氟甲磺酸酯19进行B-烷基铃木-宫浦偶联反应,以及以底物为导向的氢化反应24。结合存在于1.中的硫氰酸酯官能团