Anticancer Agents from the Australian Tropical Rainforest: Spiroacetals EBC-23, 24, 25, 72, 73, 75 and 76
作者:Lin Dong、Heiko Schill、Rebecca L. Grange、Achim Porzelle、Jenny P. Johns、Peter G. Parsons、Victoria A. Gordon、Paul W. Reddell、Craig M. Williams
DOI:10.1002/chem.200901525
日期:2009.10.26
EBC‐23, 24, 25, 72, 73, 75 and 76 were isolated from the fruit of Cinnamomum laubatii (family Lauraceae) in the Australian tropical rainforests. EBC‐23 (1) was synthesized stereoselectively, in nine linear steps in 8 % overall yield, to confirm the reported relative stereochemistry and determine the absolute stereochemistry. Key to the total synthesis was a series of Tietze–Smith linchpin reactions
EBC-23、24、25、72、73、75和76是从澳大利亚热带雨林中的laubatii肉桂(月桂科)的果实中分离出来的。EBC-23(1)以9个线性步骤立体选择性合成,总产率为8%,以确认报道的相对立体化学并确定绝对立体化学。全面合成的关键是一系列的Tietze–Smith linchpin反应。发现新的螺缩醛结构基序,例如EBC-23(1),可在小鼠模型中抑制雄激素非依赖性前列腺肿瘤细胞DU145的生长,表明其具有治疗成人难治性实体瘤的潜力。