Enantioselective Synthesis of Spliceostatin G and Evaluation of Bioactivity of Spliceostatin G and Its Methyl Ester
作者:Arun K. Ghosh、Guddeti Chandrashekar Reddy、Andrew J. MacRae、Melissa S. Jurica
DOI:10.1021/acs.orglett.7b03456
日期:2018.1.5
An enantioselective total synthesis of spliceostatin G has been accomplished. The synthesis involved a Suzuki cross-coupling reaction as a key step. The functionalized tetrahydropyran ring was constructed from commercially available optically active tri-O-acetyl-d-glucal. Other key reactions include a highly stereoselective Claisen rearrangement, a Cu(I)-mediated 1,4 addition of MeLi to install the
已经完成了对拼接素G的对映选择性全合成。该合成涉及铃木交叉偶联反应作为关键步骤。所述官能化四氢吡喃环由商购的光学活性三构造ö乙酰基d -glucal。其他关键反应包括高度立体选择性的Claisen重排,CuLi介导的1,4添加MeLi以安装C8甲基,以及还原胺化以结合spliceostatin G的C10胺官能团。合成spliceostatin G的生物学评估它的甲酯表明它不抑制体外剪接。