作者:Ryo Shimizu、Ryo Katsuta、Keita Takeda、Shinnosuke Wakamori、Shigefumi Kuwahara、Tomoo Nukada、Ken Ishigami
DOI:10.1016/j.tet.2023.133449
日期:2023.6
Herein, we report the syntheses of aspinolides C, F, G, H, and I, which are ten-membered lactones. Aspinolides F–I were synthesized by the stereoselective 1,4-addition of the appropriate alcohol or carboxylic acid to aspinolide C, which was prepared by the chemoselective oxidation of the allylic alcohol in aspinolide B. The stereoselectivity of the 1,4-addition reaction can be rationalized using the
在此,我们报告了十元内酯 aspinolides C、F、G、H 和 I 的合成。Aspinolides F-I 是通过将合适的醇或羧酸立体选择性地 1,4-加成到 aspinolide C 上合成的,它是由 aspinolide B 中的烯丙醇化学选择性氧化制备的。1,4-加成反应的立体选择性可以使用涉及十元内酯系统的外围攻击模型合理化。使用亚异丙基-d-核糖作为起始原料,分 11 个步骤制备 Aspinolide C,总收率为 14% 。