Total synthesis of (±)-pentalenene, (±)-pentalenic acid, and (±)deoxypentalenic acid through an intramolecular double Michael reaction
作者:Masataka Ihara、Mamoru Katogi、Keiichiro Fukumoto、Tetsuji Kametani
DOI:10.1039/p19880002963
日期:——
The angular triquinane sesquiterpenes, (±)-pentalenene (1), (±)-pentalenic acid (2), and (±)-deoxypentalenic acid (4), were synthesized via the intramolecular double Michael reaction as the key step. Heating the bis-enone (10), prepared from 4,4-dimethylcyclopent-2-enone (11) in six steps, with chlorotrimethylsilane, triethylamine, and zinc chloride gave the tricyclo[7.3.0.0]dodecanedione (9), which
通过分子内双迈克尔反应作为关键步骤,合成了角喹啉倍半萜,(±)-戊烯(1),(±)-戊酸(2)和(±)-脱氧戊酸(4)。将由4,4-二甲基环戊-2-烯酮(11)制备的双烯酮(10)与氯代三甲基硅烷,三乙胺和氯化锌分六步加热,得到三环[7.3.0.0]十二烷二酮(9)。环收缩后转化为上述三喹烷。