Synthesis of optically active alkynyl alcohols and α-hydroxy esters by microbial asymmetric hydrolysis of the corresponding acetates
作者:Kenji Mori、Hiroko Akao
DOI:10.1016/0040-4020(80)85030-7
日期:1980.1
Asymmetric hydrolysis of the acetates of racemic alkynyl alcohols and α-hydroxy esters by Bacillus subtilis var. Niger afforded optically active acetates and alcohols in 7–90% optical purities. The both enantiomers of optically pure mandelie acid were prepared by this microbial method.
HIGHLY ENANTIOSPECIFIC AND ERYTHRO-SELECTIVE [2,3]-WITTIG REARRANGEMENT OF ENANTIOMERICALLY-ENRICHED ALLYLIC BENZYL ETHERS. A NEW, FORMAL CHIRAL SYNTHESIS OF<i>l</i>-EPHEDRINE
作者:Noboru Sayo、Ei-ichiro Kitahara、Takeshi Nakai
DOI:10.1246/cl.1984.259
日期:1984.2.5
The [2,3]-Wittigrearrangement of chiral (Z)-allylic benzyl ethers provides 94–97% of asymmetric transfer (enantiospecificity), along with 90–96% of erythroselectivity. Its synthetic potential is illustrated through the stereocontrolled synthesis of an optically-active precursor of l-ephedrine.
Practical Preparation of Both Optically Pure Enantiomers of But-1-yn-3-ol, Oct-1-yn-3-ol and 6-Methylhept-2-yn-4-ol Using Biocartol as Resolving Agent
作者:Veronique Michelet、Isabelle Besnier、Suzelle Tanier、Anne Marie Touzin、Jean Pierre Genet、Jean Pierre Demoute
DOI:10.1055/s-1995-3866
日期:1995.2
A new facile preparation of optically pure secondary alkynols has been developed. This involves resolution of the corresponding racemic alcohols using biocartol as the resolving agent.
Asymmetric synthesis of optically active compounds
申请人:Hoffmann-La Roche Inc.
公开号:US04000169A1
公开(公告)日:1976-12-28
Asymmetric synthesis of optically active 3,7,11-trimethyl-dodecan-1-ol, an intermediate for producing optically active vitamin E, from isovaleraldehyde or prenal including intermediates in this synthesis.