THE ENANTIOSELECTIVE BIOTRANSFORMATION OF α-TERPINEOL AND ITS ACETATE WITH THE CULTURED CELLS OF<i>NICOTIANA TABACUM</i>
作者:Takayuki Suga、Toshifumi Hirata、Ym Sook Lee
DOI:10.1246/cl.1982.1595
日期:1982.10.5
In the biotransformation of the enantiomers of p-menth-1-en-8-ol (α-terpineol) and 8-acetoxy-p-menth-1-ene (α-terpinyl acetate) with the culturedsuspensioncells of Nicotianatabacum, it was clarified that the culturedcells effected the hydroxylation at the 6-position of (4R)-(+)-enantiomer in preference to the (4S)-(−)-enantiomer, whereas the cells did the hydrolysis of the acetoxyl group and the
AbstractWater loss from frans‐sobrerol upon electron impact ionization selectively involves the tertiary OH group, predominantly occurring by a stereocontrolled H‐transfer from C(5) position in a rate‐determining step process, as proved by 18O and deuterium labelling. Monomethyl ethers behave accordingly. Ionic structures of the water‐loss product or products are investigated by metastable ion and collision activation mass‐analysed ion kinetic energy spectroscopy, using model ions generated from some substrates, which are chemically related to fralts‐sobrerol in condensed phase, i.e. α‐pinane epoxide, cis‐sobrerol and pinol. A substantial conversion of cis‐sobrerol molecular ions to ionized pinol by loss of water has been demonstrated.
Schmidt, Chemische Berichte, <hi>1953</hi>, vol. 86, p. 1437,1443