中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
—— | ethyl 2-hydroxy-4-phenylbutanoate | 93921-85-8 | C12H16O3 | 208.257 |
(S)-2-羟基-4-苯基丁酸 | (S)-2-hydroxy-4-phenylbutanoic acid | 115016-95-0 | C10H12O3 | 180.203 |
2-羟基-4-苯基丁酸 | 2-hydroxy-4-phenylbutanoic acid | 4263-93-8 | C10H12O3 | 180.203 |
(alphaS)-alpha-羟基-gamma-氧代苯丁酸乙酯 | (2S)-2-hydroxy-4-oxo-4-phenyl-butyric acid ethyl ester | 243658-52-8 | C12H14O4 | 222.241 |
2-(S)-羟基-4-氧代-4-苯基丁酸 | (S)-2-hydroxy-4-oxo-4-phenylbutanoic acid | 146912-63-2 | C10H10O4 | 194.187 |
2-氧代-4-苯基丁酸乙酯 | 2-oxo-4-phenylbutanoic acid ethyl ester | 64920-29-2 | C12H14O3 | 206.241 |
—— | ethyl (S)-2-methanesulfonyloxy-4-phenylbutanoate | 129277-07-2 | C13H18O5S | 286.349 |
2-氧代-4-苯基丁酸 | 2-oxo-4-phenylbutyric acid | 710-11-2 | C10H10O3 | 178.188 |
中文名称 | 英文名称 | CAS号 | 化学式 | 分子量 |
---|---|---|---|---|
(R)-2-羟基-4-苯基丁酸乙酯 | ethyl (R)-2-hydroxy-4-phenylbutyrate | 90315-82-5 | C12H16O3 | 208.257 |
(R)-2-羟基-4-苯基丁酸 | (R)-2-hydroxy4-phenylbutanoic acid | 29678-81-7 | C10H12O3 | 180.203 |
(S)-2-羟基-4-苯基丁酸 | (S)-2-hydroxy-4-phenylbutanoic acid | 115016-95-0 | C10H12O3 | 180.203 |
—— | (S)-4-phenyl-1,2-butanediol | 124988-64-3 | C10H14O2 | 166.22 |
—— | ethyl (S)-2-methanesulfonyloxy-4-phenylbutanoate | 129277-07-2 | C13H18O5S | 286.349 |
The versatile carbonyl reductases from Gluconobacter oxydans in the enantioselective reduction of ketones to the corresponding alcohols were exploited by genome search approach. All purified enzymes showed activities toward the tested ketoesters with different activities. In the reduction of 4-phenyl-2-butanone with in situ NAD(P)H regeneration system, (S)-alcohol was obtained with an e.e. of up to 100% catalyzed by Gox0644. Under the same experimental condition, all enzymes catalyzed ethyl 4-chloroacetoacetate to give chiral products with an excellent e.e. of up to 99%, except Gox0644. Gox2036 had a strict requirement for NADH as the cofactor and showed excellent enantiospecificity in the synthesis of ethyl (R)-4-chloro-3-hydroxybutanoate. For the reduction of ethyl 2-oxo-4-phenylbutyrate, excellent e.e. (>99%) and high conversion (93.1%) were obtained by Gox0525, whereas the other enzymes showed relatively lower e.e. and conversions. Among them, Gox2036 and Gox0525 showed potentials in the synthesis of chiral alcohols as useful biocatalysts.
通过基因组搜索方法,利用Gluconobacter oxydans中多功能醛酮还原酶对酮类化合物进行对映选择性还原,获得了一系列酶。所有纯化的酶对不同活性的酮酯表现出活性。在使用原位NAD(P)H再生系统还原4-苯基-2-丁酮时,Gox0644催化得到了e.e.高达100%的(S)-醇。在相同的实验条件下,除Gox0644外,所有酶均催化乙酸乙酯4-氯乙酮酸酯生成具有高达99%的优异e.e.的手性产物。Gox2036对NADH作为辅因子有严格要求,在合成乙酸(R)-4-氯-3-羟基丁酸乙酯中表现出优异的对映选择性。在还原乙酸2-氧代-4-苯基丁酸酯时,Gox0525获得了优异的e.e.(>99%)和高转化率(93.1%),而其他酶则表现出相对较低的e.e.和转化率。其中,Gox2036和Gox0525在合成手性醇作为有用的生物催化剂方面表现出潜力。