中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | methyl 2-deoxy-α-D-erythro-pentopyranoside | 6160-56-1 | C6H12O4 | 148.159 |
—— | methyl 2-deoxy-β-D-erythro-pentopyranoside | 17676-20-9 | C6H12O4 | 148.159 |
甲基2-脱氧-D-赤式-吡喃戊糖苷 | methyl-2-deoxyribopyranoside | 863396-35-4 | C6H12O4 | 148.159 |
甲基-2-脱氧-D-核糖 | 1-O-methyl-2-deoxy-D-ribofuranoside | 60134-26-1 | C6H12O4 | 148.159 |
甲基-2-脱氧-beta-D-呋喃核糖苷 | methyl 2-deoxy-β-D-erythro-pentofuranoside | 51255-18-6 | C6H12O4 | 148.159 |
甲基-2-脱氧-alpha-D-呋喃核糖苷 | methyl 2-deoxy-α-D-erythro-pentofuranoside | 51255-17-5 | C6H12O4 | 148.159 |
This paper describes a structure-based approach to elucidate the stereospecificity, including inversion of enantioselectivity, of the 2-deoxyribose-5-phosphate aldolase-catalyzed asymmetric aldol addition reaction using unnatural substrates designed for the total synthesis of epothilones. In addition, an aldolase variant with Ser-238 being altered for Asp was found to be 2.5 times more effective than the wild type in accepting the unphosphorylated substrate D-glyceraldehyde. A new H-bonding interaction between the Asp-238 carboxylate and the 3-hydroxyl of the substrate was identified and was used to rationalize the rate enhancements.Key words: aldol reaction, 2-deoxyribose-5-phosphate aldolase, mutagenesis, inversion of enantioselectivity.