Recombinant 2-Deoxyribose-5-phosphate Aldolase in Organic Synthesis: Use of Sequential Two-Substrate and Three-Substrate Aldol Reactions
作者:Chi-Huey Wong、Eduardo Garcia-Junceda、Lihren Chen、Olga Blanco、Harrie J. M. Gijsen、Darryl H. Steensma
DOI:10.1021/ja00117a003
日期:1995.3
A new procedure has been developed for the large scale preparation of recombinant 2-deoxyribose-5-phosphate aldolase (DERA, EC 4.1.2.4) from E. coli strain DH5 alpha (ATCC 86963). The enzyme was purified to homogeneity with an overall yield of 83% and in sufficient quantity to grow crystals suitable for X-ray diffraction studies. Using the sequential two- or three-substrate aldol reaction, DERA was applied to the synthesis of a variety of sugar analogs including deoxyriboses, 2-deoxyfucose analogs, dideoxyhexoses, trideoxyhexoses, deoxythiosugars, and C-13-substituted 2-deoxyribose-5-phosphate.
Chemoenzymatic synthesis of homoazasugars
作者:Ian Henderson、Karen Laslo、Chi-Huey Wong
DOI:10.1016/0040-4039(94)85053-4
日期:1994.1
A chemoenzymatic approach for the synthesis of homoazasugars is described, utilizing an aldolase to catalyze the key asymmetric aldol addition reaction. This approach is illustrated by the synthesis of β-D-homomannonojirimycin (11) using D-fructose diphosphate (FDP) aldolase.