作者:Thomas Lindel、Michael Zöllinger、Peter Mayer
DOI:10.1055/s-2007-986664
日期:——
The antitumor active pyrrole-imidazole alkaloid (-)-dibromophakellstatin from the marine sponge Phakellia mauritiana was synthesized enantioselectively in ten steps, starting from hydroxyproline. The key step is the diastereoselective three-component imidazolidinone annulation to a chiral dipyrrolopyrazinone. Deoxygenation of a hydroxyphakellstatin precursor was achieved by Appel reaction, followed by reduction with SmI2.
以羟脯氨酸为原料,分十步对映选择性合成了来自海绵 Phakellia mauritiana 的抗肿瘤活性吡咯-咪唑生物碱 (-)-二溴法凯尔他汀。关键步骤是非对映选择性三组分咪唑烷酮环化为手性二吡咯并吡嗪酮。羟基法凯尔他汀前体的脱氧通过 Appel 反应实现,然后用 SmI2 还原。