Synthesis of 10-Cyanoverticillene and Its Reactions Directed toward the Verticillol Synthesis
作者:Tadahiro Kato、Takumi Hirano、Masahiro Hoshikawa、Tadao Uyehara
DOI:10.1246/bcsj.69.221
日期:1996.1
Directed toward the synthesis of verticillols, 10-cyanoverticillene 8 was settled as a key intermediate. Bond formation of cyano chloride 7 possessing secoverticillane skeleton to the key intermediate 8 with LiN(TMS)2 at 60 °C proceeded smoothly with moderate yield. The tetrasubstituted double bond of 8 was selectively oxidized, providing the epoxyverticillene derivatives 15 and 16. Hydride reduction of the epoxides were attempted, giving unexpected results. Synthesis of dl-verticillene 13 was also presented.
在合成蛭石醇的过程中,10-氰基噻吩 8 被确定为关键中间体。在 60 °C 下,用 LiN(TMS)2 将具有仲维替烷骨架的氰基氯化物 7 与关键中间体 8 形成键合,过程顺利,产率适中。8 的四取代双键被选择性地氧化,生成了环氧十六烷衍生物 15 和 16。尝试对环氧化物进行氢化还原,结果出乎意料。此外,还介绍了 dl-verticillene 13 的合成。