Studies on monoterpene glucosides and related natural products. XLV. Synthesis of 13C-labeled acyclic monoterpenes for studies on the mechanism of the iridane skeleton formation in the biosynthesis of iridoid glucosides.
Thione Esters as Substrates for the Stereoselective Alkylation of Model Compounds of Nonactic Acids
作者:François Loiseau、Inga Kholod、Reinhard Neier
DOI:10.1002/ejoc.200901513
日期:2010.8
relative configurations could be achieved. In the third route the thioneester 18 was deprotonated with tBuOK. At temperatures below -78 °C, the enolate maintained the cis configuration of the substituents at the tetrahydrofuran ring. The alkylated product 12 could be isolated with a satisfactory cis/trans ratio of 85:15. The modelcompound 12 could be successfully transformed into more hydrophobic derivatives
Studies on monoterpene glucosides and related natural products. XLV. Synthesis of 13C-labeled acyclic monoterpenes for studies on the mechanism of the iridane skeleton formation in the biosynthesis of iridoid glucosides.
作者:SHINICHI UESATO、KOJI KOBAYASHI、HIROYUKI INOUYE
DOI:10.1248/cpb.30.927
日期:——
For studies on the cyclopentane ring formation from acyclic monoterpenes in the biosynthesis of iridoid glucosides, the following 13C-labeled precursors of the acyclic monoterpene series were synthesized : [9-13C]-and [4-13C]-10-hydroxygeraniol (9), [2-13C]-9, 10-dihydroxygeraniol (10), (R)-(+)-and (S)-(-)-[9-13C]-10-hydroxycitronellol ((R)-(+)-and (S)-(-)-8), (R)-(+)-and (S)-(-)-[8-13C]-9, 10-dihydroxycitronellol ((R)-(+)-and (S)-(-)-11).