Simple Preparation of Rhodococcus erythropolis DSM 44534 as Biocatalyst to Oxidize Diols into the Optically Active Lactones [0.03%]
Rhodococcus erythropolis DSM 44534的简易制备及其作为生物催化剂氧化二醇生成光学活性内酯的研究
Enriqueta Martinez-Rojas,Teresa Olejniczak,Konrad Neumann et al.
Enriqueta Martinez-Rojas et al.
In the current study, we present a green toolbox to produce ecological compounds like lactone moiety. Rhodococcus erythropolis DSM 44534 cells have been used to oxidize both decane-1,4-diol () and decane-1,5-diol () into the corresponding ...
Validation of a Chiral Liquid Chromatographic Method for the Degradation Behavior of Flumequine Enantiomers in Mariculture Pond Water [0.03%]
用于水产养殖池水中氟尼辛旋光异构体降解行为的拆分液相色谱法的验证
Yan-Fei Wang,Xiao-Feng Gao,Huo-Xi Jin et al.
Yan-Fei Wang et al.
In this work, flumequine (FLU) enantiomers were separated using a Chiralpak OD-H column, with n-hexane-ethanol (20:80, v/v) as the mobile phase at a flow rate of 0.6 mL/min. Solid phase extraction (SPE) was used for cleanup and enrichment. ...
An Integrated Experimental and Computational Approach for Characterizing the Kinetics and Mechanism of Triadimefon Racemization [0.03%]
一种表征三唑类杀菌剂三苯美 fung 胺消旋化动力学和机理的集成实验与计算方法
Qianyi Cheng,Quincy Teng,Satori A Marchitti et al.
Qianyi Cheng et al.
Enantiomers of chiral molecules commonly exhibit differing pharmacokinetics and toxicities, which can introduce significant uncertainty when evaluating biological and environmental fates and potential risks to humans and the environment. Ho...
Chiral HPLC Separation and Modeling of Four Stereomers of DL-Leucine-DL-Tryptophan Dipeptide on Amylose Chiral Column [0.03%]
DL-亮氨酸-L-色氨酸端氨基二肽四种对映异构体的光学纯度测定及模型建立
Mohammed F Alajmi,Afzal Hussain,Mohd Suhail et al.
Mohammed F Alajmi et al.
Chiral high-performance liquid chromatography (HPLC) separation and modeling of four stereomers of DL-leucine-tryptophan DL-dipeptide on AmyCoat-RP column are described. The mobile phase applied was ammonium acetate (10 mM)-methanol-acetoni...
Revised Absolute Configuration of Sibiricumin A: Substituent Effects in Simplified Model Structures Used for Quantum Mechanical Predictions of Chiroptical Properties [0.03%]
西伯利亚红霉素A的绝对构型修正：在量子力学预测圆二色性性质的简化模型结构中的取代基效应
Dan Zhao,Zheng-Qiu Li,Fei Cao et al.
Dan Zhao et al.
This study discusses the choice of different simplified models used in computations of electronic circular dichroism (ECD) spectra and other chiroptical characteristics used to determine the absolute configuration (AC) of the complex natura...
Heme Orientation of Cavity Mutant Hemoglobins (His F8 → Gly) in Either α or β Subunits: Circular Dichroism, (1) H NMR, and Resonance Raman Studies [0.03%]
血红蛋白腔体突变体（His F8→Gly）在α或β亚基中的血红素取向：圆二色性，H-1NMR及共振拉曼研究
Masako Nagai,Yukifumi Nagai,Yayoi Aki et al.
Masako Nagai et al.
Native human adult hemoglobin (Hb A) has mostly normal orientation of heme, whereas recombinant Hb A (rHb A) expressed in E. coli contains both normal and reversed orientations of heme. Hb A with the normal heme exhibits positive circular d...
Enantioselective Ethylation of Various Aldehydes Catalyzed by Readily Accessible Chiral Diols [0.03%]
一类可方便获得的手性二醇的不对称催化体系及其在醛的选择性乙基化反应中的应用研究
Yaşar Gök,Seda Kiliçarslan,Halil Zeki Gök et al.
Yaşar Gök et al.
Four chiral C2 -symmetric diols were synthesized in a straightforward three-step reaction and demonstrated excellent enantioselectivities and good overall yields. Their catalytic activities were examined via the addition of diethylzinc to v...
Characterization of a Crosslinked Elastomeric-Protein Inspired Polypeptide [0.03%]
一种交联的橡胶蛋白型多肽的表征研究
Brigida Bochicchio,Angelo Bracalello,Antonietta Pepe
Brigida Bochicchio
Materials inspired by natural proteins have a great appeal in tissue engineering for their biocompatibility and similarity to extracellular matrix (ECM). Chimeric polypeptides inspired by elastomeric proteins such as silk, elastin, and coll...
Isolation, Stereochemical Study, and Antioxidant Activity of Benzofuranone Derivatives from a Mangrove-derived Fungus Eurotium rubrum MA-150 [0.03%]
来源于红树林真菌Eurotium rubrum MA-150的苯并呋喃化合物的分离、立体结构测定及抗氧化活性研究
Ling-Hong Meng,Attila Mándi,Xiao-Ming Li et al.
Ling-Hong Meng et al.
Enantiomers of a 2-benzofuran-1(3H)-one derivative [(-)- and (+)-] and four known analogs () were isolated and identified from the culture extract of Eurotium rubrum MA-150, a fungus obtained from the mangrove-derived rizospheric soil. Thei...
Cooperative Effects Between Arginine and Glutamic Acid in the Amino Acid-Catalyzed Aldol Reaction [0.03%]
氨基酸催化的醛缩合反应中赖氨酸和谷氨酸的协同效应
Guillem Valero,Albert Moyano
Guillem Valero
Catalysis of the aldol reaction between cyclohexanone and 4-nitrobenzaldehyde by mixtures of L-Arg and of L-Glu in wet dimethyl sulfoxide (DMSO) takes place with higher enantioselectivity (up to a 7-fold enhancement in the anti-aldol for th...