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Stereoselective synthesis of alpha,alpha?-substituted medium-sized cyclic ethers has been achieved by means of nucleophilic substitution of the corresponding lactone-derived thioacetals and their sulfone counterparts. Nucleophilic substitution of medium-sized lactone-derived thioacetals could be achieved efficiently either by (i) activation with NIS/TMSOTf in the presence of allyltrimethylsilane or TMSCN or by (ii) oxidation to the corresponding sulfones followed by treatment with an appropriate organometallic species such as divinylzinc or dimethyl(2-phenylethynyl)aluminum. Interestingly, the stereochemical consequence was found to be largely dependent on the local structure of substrates. In some cases, the gauche steric interaction developed in the transition state was considered to be responsible for the observed diastereoselectivity. The present method enables an efficient synthesis of a variety of alpha,alpha?-substituted seven- to nine-membered cyclic ethers from readily accessible lactone precursors.

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Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H2037NO – PubChem

 

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Reference of 497-25-6, Because a catalyst decreases the height of the energy barrier, its presence increases the reaction rates of both the forward and the reverse reactions by the same amount.497-25-6, Name is Oxazolidin-2-one, molecular formula is C3H5NO2. In a article,once mentioned of 497-25-6

Tamiflu (oseltamivir phosphate), clinically working antiviral chiral drug, is most effective against the infectious disease caused by both influenza A and B. It is also the last resort drug for the treatment of N1H1 virus infection at a high cost with minimal global availability. The current industrial method uses natural (-)-shikimic acid obtained from Chinese star anise and coffee beans, hence the limited natural resource and scarcity restricted the Tamiflu production. While most of the synthetic methods reported were composed of natural chiral pools and relatively low-cost reagents, however, the industrial process is fundamentally limited to the use of hazardous azide or tedious purification methods. In case of an influenza outbreak, producing the Tamiflu according to its demand may be difficult. This document detailed the synthetic progress of chemistry over the last two decades emphasizing the starting materials, hazards of reagents, time needed, number of steps, and overall yields etc. for the interest in academia as well as industrial research.

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Oxazolidine – Wikipedia,
Oxazolidine | C3H750NO – PubChem

 

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A powerful new continuous process for the formation and use of donor/acceptor-substituted carbenes is described. The safety profile of diazo group transfer on methyl phenylacetate was determined including kinetic studies in batch and in flow using in-line IR analysis. Batch work-up and liquid chromatography were circumvented by developing an optimized liquid/liquid flow separation method providing aryl diazoacetates in high purity. Fast screening of reaction conditions in flow with in-line IR analysis allowed rapid reaction optimization. Finally, a multistep process of diazo group transfer, extraction, separation and subsequent diazo decomposition combined with multiple X-H insertion reactions was established.

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Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H846NO – PubChem

 

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Acanthodendrilline (1), a new bromotyrosine alkaloid, was isolated from the Thai marine sponge Acanthodendrilla sp. The structure of 1 was fully characterized by spectroscopic analysis, in agreement with the synthesized compound used to resolve the single chiral center at C-11. Total synthesis of the enantiomers of 1 allowed for the comparison of specific rotation values and hence the determination of the absolute configuration as 11-S. Cytotoxicity evaluation revealed that (S)-1 exhibited approximately three-fold more potent cytotoxicity against the human non-small cell lung cancer H292 cell line than (R)-1.

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Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H1402NO – PubChem

 

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Five-membered secondary amine heterocycles containing an alpha-heteroatom were prepared and shown to be ineffective as catalysts for the iminium ion catalysed Diels-Alder reaction between cinnamaldehyde and cyclopentadiene. Their six-membered counterparts proved to be highly active catalysts. In stark contrast, the catalytic activity observed when comparing the non alpha-heteroatom cyclic amines proline methyl ester and methyl pipecolinate showed the five-membered ring amine was significantly more active. Concurrent density functional theoretical calculations suggest a rationale for the observed trends in reactivity, highlighting that LUMO activation through an iminium ion intermediate plays a key role in catalytic activity.

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Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H1279NO – PubChem

 

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The chlorination reactions of 2-oxazolidinone with hypochlorous acid (HOCl), tert-butyl hypochlorite (tBuOCl) and N-chlorosuccinimide (NCS) were studied at 25-C, constant ionic strength, and under isolation conditions. The kinetic results obtained in the formation processes of the N-chloro-2-oxazolidinone are summarized in this paper. The kinetics studied showed a first order with respect to the concentration of the each reactant and a complex dependence of the pH on the rate constant. The reactivity order with respect to the chlorinating agent found is k(HOCl)>k(tBuOCl)>k(NCS).

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Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H883NO – PubChem

 

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We report the preparation and characterization of charged, amphiphilic block copolypeptides that form stable vesicles and micelles in aqueous solution. Specifically, we prepared and studied the aqueous self-assembly of a series of poly(L-lysine)-b-poly(L-leucine) block copolypeptides, KxL y, where x ranged from 20 to 80 and y ranged from 10 to 30 residues, as well as the poly(L-glutamatic acid)-b-poly(L-leucine) block copolypeptide, E60L20. Furthermore, the vesicular assemblies show dynamic properties, indicating a high degree of membrane fluidity. This characteristic provides stimuli-responsive properties to the vesicles and allows fine adjustment of vesicle size using liposome-based extrusion techniques. Vesicle extrusion also provides a straightforward means to trap solutes, making the vesicles promising biomimetic encapsulants.

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Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H1507NO – PubChem

 

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N-Phosphonomethylglycine and its salts are manufactured by hydrolysing N-phosphonomethyl-2-oxazolidinone in an aqueous medium and thereafter oxidising the hydrolysis product in an aqueous alkaline medium using an oxygen-containing gas in the presence of an oxidation catalyst, for example a platinum or palladium catalyst optionally containing a promoter such as bismuth.

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Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H120NO – PubChem

 

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The reactant in an enzyme-catalyzed reaction is called a substrate. Enzyme inhibitors cause a decrease in the reaction rate of an enzyme-catalyzed reaction.I hope my blog about 102029-44-7 is helpful to your research. 102029-44-7.

102029-44-7, In chemical reaction engineering, simulations are useful for investigating and optimizing a particular reaction process or system. 102029-44-7, Name is (R)-4-Benzyl-2-oxazolidinone, molecular formula is C10H11NO2. In a Article,once mentioned of 102029-44-7

The alkaloid tyroscherin (2), which contains a vicinal anti-amino alcohol subunit was prepared from 4-hydroxyphenylpropionic acid (5) and meso-diol 9. After desymmetrization of diol 9 and suitable protecting group manipulations, one terminus was extended via a Claisen rearrangement giving rise to enoate ent-15. The missing carbon on the other end could be incorporated using MeMgCl/CuBr·SMe2 leading eventually to aldehyde ent-22. The acylated oxazolidinone 32 derived from acid 5 and aldehyde ent-22 were combined in an aldol reaction. A subsequent Curtius rearrangement on the carboxylic group furnished the amino function of tyroscherin (2). In a proof of concept study the same strategy was used to prepare tyroscherin analog 28.

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Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H2060NO – PubChem

 

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Chemistry involves the study of all things chemical – chemical processes, chemical compositions and chemical manipulation – in order to better understand the way in which materials are structured, how they change and how they react in certain situations. Formula: C10H11NO2

The title compounds were synthesized by the efficient route previously explored for the synthesis of enantiomeric pairs of thiolactomycin and its 3-demethyl derivative. These studies were carried out to prove the flexibility of the previously explored synthetic route to natural thiolactomycin (TLM) 1 and to examine the structure-activity relationship on the 5-position of 1. While all of the synthesized congeners lacked in vitro antibacterial activity, these studies led us to find 5-(alk-2-enyl)-TLM (ent-4d) which exhibits mammalian type I fatty acid synthase (FAS) inhibitory activity equal to that of C75, a potent inhibitor reported previously. It was also found that 5-[(E)-cycloalk-2- enylidenemethyl]-TLM (ent-5c) exhibited slightly less potent mammalian type I FAS inhibitory activity than C75.

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Reference:
Oxazolidine – Wikipedia,
Oxazolidine | C3H1961NO – PubChem