发明名称 |
Process for the preparation of R-2,2-R1,R2-1,3-dioxolane-4-methanol |
摘要 |
Process for the preparation of R-2,2-R1,R2-1,3-dioxolane-4-methanol wherein R1 and R2 are H or alkyl groups or wherein R1 and R2 together with the carbon atom to which they are attached form a carbocyclic ring by subjecting a mixture of R- and S-2,2-R1,R2-1,3-dioxolane-4-methanol to the action of a micro-organism or substances derived therefrom having the ability for stereoselective consumption of S-2,2-R1,R2-1,3-dioxolane-4-methanol preferably until at least 80 wt % and more preferably all the S-2,2-R1,R2-1,3-dioxolane-4-methanol is consumed. Various micro-organisms of the genus Rhodococcus, Nocardia and Corynebacterium are disclosed as suitable for the purpose. The R-isomer is a valuable intermediate for stereospecific synthesis of various biologically active compounds including S-metoprolol.
|
申请公布号 |
US5190867(A) |
申请公布日期 |
1993.03.02 |
申请号 |
US19920822653 |
申请日期 |
1992.01.21 |
申请人 |
SHELL INTERNATIONAL PETROLEUM COMPANY, LTD. |
发明人 |
BERTOLA, MAURO A.;MARX, ARTHUR F.;KOGER, HEIN S.;CLAASSEN, VOLKERT P.;PHILLIPS, GARETH T. |
分类号 |
C07D317/20;C07D317/32;C07D317/72;C12P41/00 |
主分类号 |
C07D317/20 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|