A Highly Stereoselective Total Synthesis of Hispidospermidin: Derivation of a Pharmacophore Model
作者:Alison J. Frontier、Subharekha Raghavan、Samuel J. Danishefsky
DOI:10.1021/ja9944960
日期:2000.7.1
The total synthesis of the title compound has been accomplished. Among the key steps were (i) a conjugate additionRobinson annulation-type sequence (see 4), (ii) intramolecular carbomercuration (see 3), (iii) a reduction−ketonization sequence (see 25), (iv) cycloetherification of an unactivated methylene group (see 28), and reductive amination (see 1). A highly preliminary SAR profile suggests that
标题化合物的全合成已经完成。关键步骤包括 (i) 共轭加成罗宾逊环化型序列(参见 4),(ii)分子内卡汞化(参见 3),(iii)还原 - 酮化序列(参见 25),(iv)未活化的环醚化亚甲基(见 28)和还原胺化(见 1)。高度初步的 SAR 谱表明,组精胺的功能性细胞毒性药效团涉及亚精胺衍生物 36 的呈递,通过连接到其目标的球状疏水笼。