Synthetic Studies of Halichondrin B, an Antitumor Polyether Macrolide Isolated from a Marine Sponge. 6. Synthesis of the C1-C15 Unit via Stereoselective Construction of the B and A Rings by Kinetically and Thermodynamically Controlled Michael Reactions with the Aid of Computational Search for Dominant Conformers.
作者:Kiyoshi HORITA、Shun-ichiro HACHIYA、Tatsuya YAMAZAKI、Tae NAITOU、Jun'ichi UENISHI、Osamu YONEMITSU
DOI:10.1248/cpb.45.1265
日期:——
The C1-C15 unit of halichondrin B was synthesized starting from D-glucose via stereoselective construction of the B and A rings, which have 2, 6-trans- and 2, 6-cis-disubstituted tetrahydropyran rings, respectively. With the aid of MM2 calculations kinetically and thermodynamically controlled Michael reactions were successfully applied for the construction of the B and A rings, respectively.
从D-葡萄糖出发,合成了海绵素B的C1-C15单元,通过立体选择性构建B环和A环,分别具有2,6-反式和2,6-顺式取代的四氢呋喃环。在MM2计算的帮助下,成功地应用了动力学和热力学控制的迈克尔反应来构建B环和A环。