Methods and systems for evaluating and predicting the reactivity of monooxygenase enzymes
申请人:Fasan Rudi
公开号:US09273342B2
公开(公告)日:2016-03-01
Methods and systems for evaluating and predicting the reactivity of natural and engineered monooxygenase enzymes are provided. Methods are provided for acquiring a functional profile (fingerprint) of monooxygenases that encode information regarding the active site configuration of such monooxygenases. Methods are also provided for carrying out analysis of a monooxygenase fingerprint, to formulate predictions regarding the reactivity properties (e.g., substrate reactivity, chemo-, regio, and stereoselectivity properties) of the fingerprinted monooxygenases.
Four types ofO-methylated substrates were designed as probes for the detection of fingerprints of Type IV P450s.
设计了四种O-甲基化底物作为探针,用于检测IV型P450的指纹。
2-Substituted and 2,2-disubstituted adamantane derivatives as models for studying substituent chemical shifts and C–Hax⋯Yax cyclohexane contacts—results from experimental and theoretical NMR spectroscopic chemical shifts and DFT structures
The complete 1H and 13CNMR chemical shifts assignment for various 2-substituted and 2,2-disubstituted adamantane derivatives 1–38 in CDCl3 solution was realized on the basis of NMR experiments combined with chemical structure information and DFT-GIAO (B3LYP/6-31+G(d,p)-GIAO) calculations of chemical shifts in solution. Substituent-induced 13CNMR chemical shifts (SCS) are discussed. C–Hax⋯Yax contacts
One-Pot Etherification of Ketones and Aldehydes with Organic Halides Using Sodium Hydride as a Reductant
作者:Qingwei Meng、Bin Gong、Chuang Hui、Zhanxian Gao
DOI:10.1080/00397910802579178
日期:2009.4.22
Abstract One-pot etherification reaction of aromatic and some aliphatic carbonylcompounds with organic halides in the presence of sodium hydride as a reducing reagent proceeded smoothly in dioxane, a polar solvent with higher boiling point, to provide desired ethers in moderate to high yields.
intermolecular reactions and we found a rare singlet carbene pathway in CH3OH involving protonation and formation of a carbocation, detected due to the specific rearrangement of the pentacycloundecane skeleton. Singlet diazirines undergo intersystem crossing and deliver triplet carbenes that react with oxygen to form ketones which were isolated after irradiation. Our main finding is that the formation of diazirine
通过在不同溶剂中的制备性辐照,激光闪光光解(LFP)和量子化学计算,研究了五环十一烷(PCU)和金刚烷重氮的光化学反应性。此外,通过1 H NMR光谱,等温微量热法和圆二色性光谱研究了瓜子[7]尿素,β-和γ-环糊精(β-和γ-CD)与二嗪类的包合物的形成,然后研究了形成的配合物的光化学反应性。Diazirines经受氮的高效光化学消除(Φ - [R > 0.5),并提供相应的单卡宾。单线态碳烯在分子内和分子间反应中反应,我们在CH 3中发现了罕见的单线态卡宾通路由于五环十一烷骨架的特定重排,检测到涉及质子化和碳正离子形成的OH。单重二叠氮灵经过系统间交换并传递三重碳烯,这些碳三烯与氧反应形成酮,并在辐照后将其分离出来。我们的主要发现是,带有β-CD和γ-CD的二嗪类夹杂物的形成改变了单重态与三重态途径的相对比,单重碳烯产物在受辐照配合物的化学作用中占主导地位。我们的理论和实验研究相结合,