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Keywords asymmetric reduction;chiral amino alcohol;acetophenone;potassium borohydride; 不对称还原;手性氨基醇;苯乙酮;硼氢化钾;
The asymmetric reduction of OPBE catalyzed by Baker Yeast in nonaqueous phase to synthesis HPBE was investigated. 对面包酵母非水相催化不对称还原OPBE进行研究。
The asymmetric reduction of OPBE catalyzed by Baker Yeast in water medium to synthesis HPBE was investigated. 对面包酵母水相催化不对称还原OPBE进行研究。
The advances in asymmetric reduction of prochiral ketones to chiral alcohols with biocatalysis are reviewed. 综述了国内外利用生物催化羰基的不对称还原合成手性醇的研究情况。
And it was found that the concentration of COBE and product had some degree negative effect on the asymmetric reduction. 同时发现COBE的浓度和产物对不对称还原都有一定负面的影响。
When the [Et 3NH]+[HFe 3(CO) 11]- as catalyst was used for asymmetric reduction of 1,1-diphenylacetone, high enantioselectivity up to 98% was achieved. 当用三核的铁簇合物 [Et3 NH] + [HFe3 (CO) 11] -体系催化 1;1 二苯基丙酮的氢化时 ;最高可获得 98%25的对映选择性 .
The asymmetric reduction mechanism of p-methylcyclohexanone by sodium borohydride was investigated with ab initio calculations. 用从头计算方法对硼氢化钠不对称还原对甲基环己酮的机理进行了研究。
It is promising to synthesis these chiral aryl alcohols by asymmetric reduction of the corresponding prochiral ketones catalyzed by active cells. 含芳香基手性醇是许多手性药物合成的关键手性砌块,生物催化不对称还原前手性酮是合成该类醇的重要方法之一。
The asymmetric reduction of ketosulfone with borane catalyzed by oxazaborolidine is computed by means of the semi-empirical MNDO method. 对恶唑硼烷催化前手性酮砜不对称还原反应进行了半经验MNDO研究。
The successful result of above asymmetric reduction using metal-ligand complex could be a basis for developing a new method of reticuline synthesis. 本文将过渡金属络合物催化不对称氢化反应扩展应用到本文目标分子合成上的新探索并获得成功，其结果为今后开展这方面的工作打下了良好的基础。
In this review, asymmetric reduction of prochiral ketones and its recent advances have been described according to the reaction types. 按反应类型分类,综述了酮的不对称还原方法及其近年来的新进展。
The asymmetric reduction of ethyl 4-chloroacetoacetate(COBE) to ethyl(R)-(+)-4-chloro-3-hydroxybutyrate((R)-CHBE) by the recombinant cells in an aqueous phase was investigated. 将重组细胞用于催化4-氯乙酰乙酸乙酯不对称还原;合成出具有光学活性的(R)-(+)-4-氯-3-羟基丁酸乙酯.
To reduce product inhibition, the asymmetric reduction of COBE was carried out in a water/n-butyl acetate two-phase system by using whole-cells of Candida magnoliae. 为减轻产物抑制的影响,研究Candida magnoliae两相体系中不对称还原反应,并优化其还原反应条件。
To reduce the product inhibition, the asymmetric reduction of COBE was carried out in a water/n-butyl acetate two-phase system by using whole-cells of the recombinant cells- E. 为减轻产物抑制的影响,研究了重组菌在两相体系中不对称还原反应,并优化其还原反应条件。
Keywords Asymmetric catalysis;Terpineol;Synthesis; 不对称催化;萜品醇;合成;
Keywords asymmetric membrane;polyimide;imidization; 不对称膜;聚酰亚胺;亚胺化;
It was found that the stereoselectivity of the asymmetric reduction of COBE by yeast cells was not meeting the practical application requires. So controlling and improving the stereoselectivity of this reaction were studied. 其次,由于酵母细胞不对称还原COBE的立体选择性达不到实际应用的要求,因此研究了利用酶抑制剂预处理酵母细胞来提高反应的立体选择性。
The asymmetric reduction of ethyl 4-chloro-3-oxobutanoate (COBE) to optically active ethyl 4-chloro-3-hydroxybutanoate (CHBE) catalyzed by yeast cells in aqueous phase was investigated. 利用活性酵母细胞催化 4 氯乙酰乙酸乙酯 (COBE)的不对称还原可以直接合成具有光学活性的 4 氯 3 羟基丁酸乙酯(CHBE) .
AIM: To optimize the asymmetric reduction of ethyl 4-chloro-3-oxobutanoate (COBE) to (S)-ethyl 4-chloro-3-hydroxybutanoate [(S)-CHBE] directly catalyzed by yeast (Saccharomyces cerevisiae) fermentation broth. 目的优化酵母发酵液直接催化4-氯乙酰乙酸乙酯(COBE)合成(S)-4-氯-3-羟基-丁酸乙酯((S)-CHBE)的反应条件.
When the COBE was reduced, the product was mainly S configuration. The results indicated that both the conversion and the stereoselectivity of reaction were attractive for asymmetric reduction. 不对称还原COBE生成的主要是S(D) 型产物 ,反应COBE的转化率、光学选择性都比较高。