A convergent synthesis of the trans-fused hexahydrooxonine ring system and reproduction of conformational behavior shown by ring F of ciguatoxin
作者:Masayuki Inoue、Makoto Sasaki、Kazuo Tachibana
DOI:10.1016/s0040-4020(99)00620-1
日期:1999.9
hexahydrooxonine ringsystem has been developed. The present synthesis involves an intramolecular reaction of γ-alkoxyallylsilane with acetal to form an O-linked oxacycle and a SmI2-mediated intramolecular Reformatsky reaction for constructing an oxonane ring as the key steps. Thermodynamic behavior of the trans-fused hexahydrooxonine ring was clarified for the first time and the conformational alternation