Synthesis of unsaturated hydroxy acids by the cobalt carbonyl and phase transfer catalyzed carbonylation of vinyl epoxides
作者:Howard Alper、Serge Calet
DOI:10.1016/s0040-4039(00)82036-5
日期:1988.1
Phase transfer catalyzedreaction of vinyl epoxides with carbonmonoxide, methyl iodide, catalytic amounts of cobaltcarbonyl and TDA-1, affords β-hydroxy acids. High regioselectivity was observed in some cases.
DIPHOSPHOMEVALONATE DECARBOXYLASE VARIANT AND METHOD FOR PRODUCING OLEFIN COMPOUND USING SAME
申请人:Riken
公开号:EP3521438A1
公开(公告)日:2019-08-07
Mutations involving amino acid substitution were introduced into various sites of diphosphomevalonate decarboxylase (MVD), thus preparing a large number of MVD variants. Then, the variants were each evaluated in terms of a catalytic activity for production of olefin compounds such as isoprene. As a result, it was found that substitution of glycine at position 152 with a different amino acid resulted in improvement in the catalytic activity. In addition, it was found that the MVD in which arginine at position 74 and threonine at position 209 in addition to the position 152 were further substituted with different amino acids, respectively, also had the high catalytic activity.
Production of alkenes from 3-hydroxycarboxylic acids via 3-hydroxycarboxyl-nucleotidylic acids
申请人:Global Bioenergies
公开号:US10017787B2
公开(公告)日:2018-07-10
The application describes a method for producing alkenes (for example propylene, ethylene, 1-butylene, isobutylene, isoamylene, butadiene or isoprene) from 3-hydroxycarboxylic acids via 3-hydroxycarboxyl-nucleotidylic acids.
Diphosphomevalonate decarboxylase variant, and method for producing olefin compound by using the same
申请人:RIKEN
公开号:US10781460B2
公开(公告)日:2020-09-22
A method which enables olefin compound production with a high productivity and an enzyme used in the method, a mutation involving amino acid substitution has been introduced into various sites of diphosphomevalonate decarboxylase (MVD), thus preparing a large number of MVD variants. Next, the result of evaluating the variants for the catalytic activity related to the production of olefin compounds such as isoprene has revealed that MVD whose threonine at position 209 is substituted with a different amino acid has the catalytic activity, and that MVD whose arginine at position 74 is further substituted with a different amino acid in addition to position 209 has the catalytic activity at higher levels.
Diphosphomevalonate decarboxylase variant and method for producing olefin compound by using the same
申请人:RIKEN
公开号:US10961548B2
公开(公告)日:2021-03-30
Mutations involving amino acid substitution were introduced into various sites of diphosphomevalonate decarboxylase (MVD), thus preparing a large number of MVD variants. Then, the variants were each evaluated in terms of a catalytic activity for production of olefin compounds such as isoprene. As a result, it was found that substitution of glycine at position with a different amino acid resulted in improvement in the catalytic activity. In addition, it was found that the MVD in which arginine at position and threonine at position in addition to the position were further substituted with different amino acids, respectively, also had the high catalytic activity.