Bryophyte Constituents; 6: Synthesis of Herbertene-Derived Sesquiterpenes from Herberta adunca
作者:Theophil Eicher、Frank Servet、Andreas Speicher
DOI:10.1055/s-1996-4309
日期:1996.7
Efficient total syntheses are described for the racemic sesquiterpenes herbertenolide (2), α-herbertenol (3) and β-herbertenol (4) from Herberta adunca. ent-Herbertenolide [(+)-2] was prepared from enantiopure (-)-ethyl (1R)-1-methyl-2-oxocyclopentanecarboxylate (9) obtained from ethyl 2-oxocyclopentanecarboxylate (19) via reduction with baker’s yeast.
高效全合成法被描述为从Herberta adunca中获得的消旋倍半萜烯herbertenolide(2)、α-herbertenol(3)和β-herbertenol(4)。外消旋体-herbertenolide([+]-2)由手性纯的(-)-乙基(1R)-1-甲基-2-氧代环戊烷羧酸乙酯(9)制备,该物质通过面包酵母还原乙基2-氧代环戊烷羧酸乙酯(19)获得。