Tag: M.W=500-600

Reference of 81058-27-7, Children learn through play, and they learn more than adults might expect. Science experiments are a great way to spark their curiosity, 81058-27-7, Name is (2R,3R,4S,5R,6R)-2-Bromo-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tris(2,2-dimethylpropanoate), SMILES is CC(C)(C)C(OC[C@@H]1[C@@H](OC(C(C)(C)C)=O)[C@H](OC(C(C)(C)C)=O)[C@@H](OC(C(C)(C)C)=O)[C@@H](Br)O1)=O, belongs to chiral-nitrogen-ligands compound. In a article, author is Jida, Mouhamad, introduce new discover of the category.

An Efficient One-Pot Synthesis of Chiral N-Protected 3-Substituted (Diketo)piperazines via Ugi-4CR/De-Boc/Cyclization Process

A convenient and high yielding method to prepare a vast array of enantiomerically pure 3-substituted diketopiperazines (3-DKPs), bearing a benzyl protecting group on nitrogen 1 is reported. The methodology describes a simple one-pot procedure, starting from readily available N-protected L- or D-amino acids employing the Ugi-4CR in pure water, followed by a one-step Boc-deprotection and final lactamisation in acetic acid. All disubstituted DKPs were obtained in short times and isolated in excellent yields (84-94%) by simple precipitation in water and subsequent filtration. The practical utility of this procedure proved efficient for the synthesis of cialis (Tadalafil) analogues.

Reference of 81058-27-7, 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 81058-27-7 is helpful to your research.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
,Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Chemistry can be defined as the study of matter and the changes it undergoes. You¡¯ll sometimes hear it called the central science because it is the connection between physics and all the other sciences, starting with biology. 81058-27-7, Name is (2R,3R,4S,5R,6R)-2-Bromo-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tris(2,2-dimethylpropanoate), molecular formula is , belongs to chiral-nitrogen-ligands compound. In a document, author is Sietmann, Jan, Safety of (2R,3R,4S,5R,6R)-2-Bromo-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tris(2,2-dimethylpropanoate).

Desymmetrization of Prochiral Cyclobutanones via Nitrogen Insertion: A Concise Route to Chiral gamma-Lactams

Asymmetric access to gamma-lactams is achieved via a cyclobutanone ring expansion using widely available (1S,2R)-1-amino-2-indanol for chiral induction. Mechanistic analysis of the key N,O-ketal rearrangement reveals a Curtin-Hammett scenario, which enables a downstream stereoinduction (up to 88:12 dr) and is corroborated by spectroscopic, crystallographic, and computational studies. In combination with an easy deprotection protocol, this operationally simple sequence allows the synthesis of a range of optically pure gamma-lactams, including those bearing all-carbon quaternary stereocenters. In addition, the formal synthesis of drug molecules baclofen, brivaracetam, and pregabalin further demonstrates the synthetic utility and highlights the general applicability of the presented method.

Sometimes chemists are able to propose two or more mechanisms that are consistent with the available data. If a proposed mechanism predicts the wrong experimental rate law, however, the mechanism must be incorrect.Welcome to check out more blogs about 81058-27-7, in my other articles. Safety of (2R,3R,4S,5R,6R)-2-Bromo-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tris(2,2-dimethylpropanoate).

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
,Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Electric Literature of 81058-27-7, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 81058-27-7, Name is (2R,3R,4S,5R,6R)-2-Bromo-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tris(2,2-dimethylpropanoate), SMILES is CC(C)(C)C(OC[C@@H]1[C@@H](OC(C(C)(C)C)=O)[C@H](OC(C(C)(C)C)=O)[C@@H](OC(C(C)(C)C)=O)[C@@H](Br)O1)=O, belongs to chiral-nitrogen-ligands compound. In a article, author is Tiwari, Pawankumar R., introduce new discover of the category.

Synthesis and Antimicrobial Evaluation of Chiral 3, 5-Diaryl-5, 6-dihydro-thiazolo[2, 3-c] [1,2,4]triazoles

Disclosed herein is a general approach for the synthesis of chiral thiazolo triazoles 5a-e. An efficient 3-step synthetic strategy has been developed to obtain the fused heterocycles in good yields. The key step involves formation of a secondary carbocation under acidic condition and intramolecular attack of the nitrogen of the 1,2,4-triazolo part leads to the formation of fused bicyclic compound in a regioselective manner. A new chiral center was created during the reaction and Chiral !PLC analyses confirmed the presence of the same and the racemic nature of the synthesized compounds. Their antimicrobial activities were evaluated by broth micro-dilution method and expressed as the minimum inhibitory concentration. The preliminary bioassay results demonstrate that most of the target compounds exhibit a significantly wide spectrum activity against S. aureus and E. coli comparable to ampicillin. The efficacies of compounds against C. albicans are either more or similar compared to Griseofulvin.

Electric Literature of 81058-27-7, Each elementary reaction can be described in terms of its molecularity, the number of molecules that collide in that step. The slowest step in a reaction mechanism is the rate-determining step.you can also check out more blogs about 81058-27-7.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
,Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like 81058-27-7, Name is (2R,3R,4S,5R,6R)-2-Bromo-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tris(2,2-dimethylpropanoate). In a document, author is Milton, Ross D., introducing its new discovery. Product Details of 81058-27-7.

Nitrogenase Bioelectrochemistry for Synthesis Applications

CONSPECTUS: The fixation of atmospheric dinitrogen to ammonia by industrial technologies (such as the Haber Bosch process) has revolutionized humankind. In contrast to industrial technologies, a single enzyme is known for its ability to reduce or fix dinitrogen: nitrogenase. Nitrogenase is a complex oxidoreductase enzymatic system that includes a catalytic protein (where dinitrogen is reduced) and an electron-transferring reductase protein (termed the Fe protein) that delivers the electrons necessary for dinitrogen fixation. The catalytic protein most commonly contains a FeMo cofactor (called the MoFe protein), but it can also contain a VFe or FeFe cofactor. Besides their ability to fix dinitrogen to ammonia, these nitrogenases can also reduce substrates such as carbon dioxide to formate. Interestingly, the VFE nitrogenase can also form carbon-carbon bonds. The vast majority of research surrounding nitrogenase employs the Fe protein to transfer electrons, which is also associated with the rate-limiting step of nitrogenase catalysis and also requires the hydrolysis of adenosine triphosphate. Thus, there is significant interest in artificially transferring electrons to the catalytic nitrogenase proteins. In this Account, we review nitrogenase electrocatalysis whereby electrons are delivered to nitrogenase from electrodes. We first describe the use of an electron mediator (cobaltocene) to transfer electrons from electrodes to the MoFe protein. The reduction of protons to molecular hydrogen was realized, in addition to azide and nitrite reduction to ammonia. Bypassing the rate-limiting step within the Fe protein, we also describe how this approach was used to interrogate the rate-limiting step of the MoFe protein: metal-hydride protonolysis at the FeMo-co. This Account next reviews the use of cobaltocene to mediate electron transfer to the VFe protein, where the reduction of carbon dioxide and the formation of carbon-carbon bonds (yielding the formation of ethene and propene) was realized. This approach also found success in mediating electron transfer to the FeFe catalytic protein, which exhibited improved carbon dioxide reduction in comparison to the MoFe protein. In the final example of mediated electron transfer to the catalytic protein, this Account also reviews recent work where the coupling of infrared spectroscopy with electrochemistry enabled the potential-dependent binding of carbon monoxide to the FeMo-co to be studied. As an alternative to mediated electron transfer, recent work that has sought to transfer electrons to the catalytic proteins in the absence of electron mediators (by direct electron transfer) is also reviewed. This approach has subsequently enabled a thermodynamic landscape to be proposed for the cofactors of the catalytic proteins. Finally, this Account also describes nitrogenase electrocatalysis whereby electrons are first transferred from an electrode to the Fe protein, before being transferred to the MoFe protein alongside the hydrolysis of adenosine triphosphate. In this way, increased quantities of ammonia can be electrocatalytically produced from dinitrogen fixation. We discuss how this has led to the further upgrade of electrocatalytically produced ammonia, in combination with additional enzymes (diaphorase, alanine dehydrogenase, and transaminase), to selective production of chiral amine intermediates for pharmaceuticals. This Account concludes by discussing current and future research challenges in the field of electrocatalytic nitrogen fixation by nitrogenase.

I hope this article can help some friends in scientific research. I am very proud of our efforts over the past few months and hope to 81058-27-7 help many people in the next few years. Product Details of 81058-27-7.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
,Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

81058-27-7, Name is (2R,3R,4S,5R,6R)-2-Bromo-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tris(2,2-dimethylpropanoate), molecular formula is C26H43BrO9, belongs to chiral-nitrogen-ligands compound, is a common compound. In a patnet, author is Liao, Hsuan-Hung, once mentioned the new application about 81058-27-7, Formula: C26H43BrO9.

Multiple Hydrogen-Bond Activation in Asymmetric BrOnsted Acid Catalysis

An efficient protocol for the asymmetric synthesis of chiral tetrahydroquinolines bearing multiple stereogenic centers by means of asymmetric BrOnsted acid catalysis was developed. A chiral 1,1-spirobiindane-7,7-diol (SPINOL)-based N-triflylphosphoramide (NTPA) proved to be an effective BrOnsted acid catalyst for the insitu generation of aza-ortho-quinone methides (aza-o-QMs) and their subsequent cycloaddition reaction with unactivated alkenes to provide the products with excellent diastereo- and enantioselectivities. In addition, DFT calculations provided insight into the activation mode and nature of the interactions between the N-triflylphosphoramide catalyst and the generated aza-o-QMs.

We¡¯ll also look at important developments in the pharmaceutical industry because understanding organic chemistry is important in understanding health, medicine, 81058-27-7. The above is the message from the blog manager. Formula: C26H43BrO9.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
,Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Synthetic Route of 81058-27-7, As an important bridge between the micro and macro material world, chemistry is one of the main methods and means for humans to understand and transform the material world. 81058-27-7, Name is (2R,3R,4S,5R,6R)-2-Bromo-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tris(2,2-dimethylpropanoate), SMILES is CC(C)(C)C(OC[C@@H]1[C@@H](OC(C(C)(C)C)=O)[C@H](OC(C(C)(C)C)=O)[C@@H](OC(C(C)(C)C)=O)[C@@H](Br)O1)=O, belongs to chiral-nitrogen-ligands compound. In a article, author is Alidagi, Husnuye Ardic, introduce new discover of the category.

Pyrene functionalized cyclotriphosphazene-based dyes: Synthesis, intramolecular excimer formation, and fluorescence receptor for the detection of nitro-aromatic compounds

A series of pyrene functionalized cyclotriphosphazene-based dyes, mono- (1), cis- and trans-non-geminal-bis (2a, 2b), geminal-bis-(4), geminal-tetrakis-(6), and hexalcis-(7) derivatives, has been synthesized and, their photo physical properties such as molar absorption coefficients (epsilon), fluorescence emission, fluorescence quantum yields (phi F) and fluorescence lifetimes (tau F) have been investigated. On the relationship between molecular geometry and emission properties of dyes has been also discussed. It was found that bis-pyrene substituted compounds (2a, 2b and 4) exhibited three different fluorescence spectra which consisted of an excimer, a monomer and both monomer and excimer emissions in the same solvents, respectively. The emission difference between 2a and 2b clearly revealed that intramolecular excimer formation, which permitted to characterize unambiguously as a cis isomer, observed for compound 2a whereas 2b showed only monomer emission and consequently as a trans-isomer. These formation behaviors were supported by DFT calculation with wB97XD/6-31G (d, p) and P-31 NMR spectroscopy on addition of chiral solvating agent (CSA) experimental studies. Additionality, sensing behaviors of 2a, 4 and 6 were investigated for the detection of nitro aromatic compounds (NACs). It was found that the fluorescence emissions of the compounds were significantly quenched in presence of TNT, nitrobenzene or nitrophenol, while other tested metal ions induced no spectral changes.

Synthetic Route of 81058-27-7, Because enzymes can increase reaction rates by enormous factors and tend to be very specific, typically producing only a single product in quantitative yield, they are the focus of active research.you can also check out more blogs about 81058-27-7.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
,Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Let¡¯s face it, organic chemistry can seem difficult to learn, HPLC of Formula: C26H43BrO9, Especially from a beginner¡¯s point of view. Like 81058-27-7, Name is (2R,3R,4S,5R,6R)-2-Bromo-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tris(2,2-dimethylpropanoate), molecular formula is C7H4F3I, belongs to iodides-buliding-blocks compound. In a document, author is Matzel, Philipp, introducing its new discovery.

Synthesis of beta-Chiral Amines by Dynamic Kinetic Resolution of alpha-Branched Aldehydes Applying Imine Reductases

Imine reductases (IREDs) allow the one-step preparation of optically active secondary and tertiary amines by reductive amination of ketones. Until now, mainly alpha-chiral amines have been prepared by this route. In this study, we explored the possibility of synthesizing beta-chiral amines, a class of compounds which is also frequently found as structural motif in pharmaceuticals but much more challenging to prepare due to the following reasons: (i) The aldehyde substrate already contains the chiral center and needs to be racemized to enable full conversion. (ii) Because the intermediate imine bears the stereo center two carbon atoms remote to the imine nitrogen, it is more challenging to achieve high enantioselectivity compared to alpha-chiral amine synthesis. For investigating the proof of concept, we first confirmed that different IREDs are able to convert a variety of alpha-branched aldehydes when combined with five different amine substrates. The IRED from Streptomyces ipomoeae was a suitable enzyme facilitating the dynamic kinetic resolution of 2-phenylpropanal and a substituted 2-methyl-3-phenylpropanal: the corresponding N-methylated beta-chiral amines were obtained with >95 % conversion and 78 and 95 %ee. Other amines were formed with low to moderate enantiomeric excess. This exemplifies the potential of IREDs for the one-step synthesis of secondary beta-chiral amines, but also the challenge to identify highly selective enzymes for a desired amine product.

If you are hungry for even more, make sure to check my other article about 81058-27-7, HPLC of Formula: C26H43BrO9.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
,Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Synthetic Route of 81058-27-7, Catalysts allow a reaction to proceed via a pathway that has a lower activation energy than the uncatalyzed reaction. 81058-27-7, Name is (2R,3R,4S,5R,6R)-2-Bromo-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tris(2,2-dimethylpropanoate), SMILES is CC(C)(C)C(OC[C@@H]1[C@@H](OC(C(C)(C)C)=O)[C@H](OC(C(C)(C)C)=O)[C@@H](OC(C(C)(C)C)=O)[C@@H](Br)O1)=O, belongs to chiral-nitrogen-ligands compound. In a article, author is Cai, Kai, introduce new discover of the category.

Chiral determination of nornicotine, anatabine and anabasine in tobacco by achiral gas chromatography with (1S)-(-)-camphanic chloride derivatization: Application to enantiomeric profiling of cultivars and curing processes

The alkaloid enantiomers are well-known to have different physiological and pharmacological effects, and to play an important role in enantioselectivity metabolism with enzymes catalysis in tobacco plants. Here, we developed an improved method for simultaneous and high-precision determination of the individual enantiomers of nornicotine, anatabine and anabasine in four tobacco matrices, based on an achiral gas chromatography-nitrogen phosphorus detector (GC-NPD) with commonly available Rtx-200 column using (IS)-(-)-camphanic chloride derivatization. The method development consists of the optimization of extraction and derivatization, screening of achiral column, analysis of the fragmentation mechanisms and evaluation of matrix effect (ME). Under the optimized experimental conditions, the current method exhibited excellent detection capability for the alkaloid enantiomers, with coefficients of determination (R-2) > 0.9989 and normality test of residuals P > 0.05 in linear regression parameters. The ME can be neglected for the camphanic derivatives. The limit of detection (LOD) and limit of quantitation (LOQ) ranged from 0.087 to 0.24 mu g g(-1) and 0.29 to 0.81 mu g g(-1), respectively. The recoveries and within-laboratory relative standard deviations (RSDR) were 94.3%similar to 104.2% and 0.51%similar to 3.89%, respectively. The developed method was successfully applied to determine the enantiomeric profiling of cultivars and curing processes. Tobacco cultivars had a significant impact on the nornicotine, anatabine, anabasine concentration and enantiomeric fraction (EF) of (R)-nornicotine, whereas the only significant change induced by the curing processes was an increase in the EF of (R)-anabasine. (C) 2020 Elsevier B.V. All rights reserved.

Synthetic Route of 81058-27-7, 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 81058-27-7 is helpful to your research.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
,Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

Chemistry is the experimental and theoretical study of materials on their properties at both the macroscopic and microscopic levels. 81058-27-7, Name is (2R,3R,4S,5R,6R)-2-Bromo-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tris(2,2-dimethylpropanoate), molecular formula is C26H43BrO9. In an article, author is Tumer, Yasemin,once mentioned of 81058-27-7, Recommanded Product: 81058-27-7.

Phosphorus-nitrogen compounds: Part 43. Syntheses, spectroscopic characterizations and antimicrobial activities of cis- and trans-N/O dispirocyclotriphosphazenes containing ferrocenyl pendant arms

The cis- (5 and 6) and trans-dispiroferrocenylphosphazenes (7 and 8) containing ferrocenyl pendant arms were synthesized from the reactions of hexachlorocyclotriphosphazene, N3P3Cl6, with two equimolar amounts of the sodium salts of the ligands; [2-(N-ferrocenylmethylamino)-1-ethanoxide (1) and 3-(N-ferrocenylmethylamino)-1-propanoxide (2)]. The monospiroferrocenylcyclotriphosphazenes (3 and 4) were also isolated from the reaction mixtures as by-products. The characterizations of the new compounds (5-8) were elucidated using MS, FTIR and H-1, C-13 and P-31 NMR techniques. The molecular structure of 6 was established by X-ray crystallography. As expected, compounds 5, 6, 7 and 8 have two stereogenic P-atoms. The compounds 5 and 6 are likely to be in cis (meso) forms, whereas the compounds 7 and 8 are in trans (racemic) forms. Besides, the antimicrobial activities of the cyclotriphosphazenes against G(+) and G(-) bacteria and fungi were evaluated. The interactions of the compounds with pBR322 plasmid DNA were also investigated. (C) 2018 Elsevier B.V. All rights reserved.

If you¡¯re interested in learning more about 81058-27-7. The above is the message from the blog manager. Recommanded Product: 81058-27-7.

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
,Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis

One of the major reasons for studying chemical kinetics is to use measurements of the macroscopic properties of a system, such as the rate of change in the concentration of reactants or products with time. 81058-27-7, Name is (2R,3R,4S,5R,6R)-2-Bromo-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tris(2,2-dimethylpropanoate), formurla is C26H43BrO9. In a document, author is Aguiar de Souza, Isabela Cristina, introducing its new discovery. Name: (2R,3R,4S,5R,6R)-2-Bromo-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tris(2,2-dimethylpropanoate).

Investigation of cobalt(III)-phenylalanine complexes for hypoxia-activated drug delivery

Four cobalt(iii)-phenylalanine complexes, [Co(Phe)(py(2)en)](ClO4)(2)center dot H2O (1), [Co(Phe)(TPA)](ClO4)(2)center dot H2O (2), [Co(Phe)(py(2)enMe(2))](ClO4)(2)center dot H2O (3) and [Co(bipy)(2)(Phe)](ClO4)(2)center dot H2O (4), were investigated as prototype models for hypoxia-activated delivery of melphalan – a phenylalanine derivative anticancer drug of the class of nitrogen mustards. Single crystal X-ray diffraction analysis provided the molecular structures of 1-4, as a single isomer/conformer. According with NMR and theoretical calculations, the solid-state structures of 2 and 4 are maintained in solutions. For complexes 1 and 3, though, a mixture of isomers was found in DMSO solutions: Delta-cis alpha(exo,exo) and Delta-cis beta(1)(exo,exo) for 1 (3 : 2 ratio), and Delta-cis alpha(exo,exo) and Delta-cis alpha(exo,exo) for 3 (5 : 1 ratio). Theoretical calculations point to a re-equilibration reaction of the solid-state Delta-cis beta(1) isomer of 1 in solution. Electrochemical analysis revealed a correlation between the electron-donor capacity of the ancillary ligands and the redox potentials of the complexes. The potentials varied from +0.01 for 1 to +0.31 V vs. SHE for 4 in aqueous media and indicate that reduction should be achieved in biological media. The integrity of the complexes in pH 5.5 and 7.4 buffered solutions was confirmed by UV-Vis monitoring up to 24 h at 25 degrees C. Reduction by ascorbic acid (AA) shows an O-2-dependent dissociation of the L-Phe for complexes 1-3, with higher conversion rates at pH 7.4. For complex 4, a fast dissociation of L-Phe was observed, with conversion rates unaffected by the pH and presence of O-2.

If you are hungry for even more, make sure to check my other article about 81058-27-7, Name: (2R,3R,4S,5R,6R)-2-Bromo-6-((pivaloyloxy)methyl)tetrahydro-2H-pyran-3,4,5-triyl tris(2,2-dimethylpropanoate).

Reference:
Chiral nitrogen ligands in late transition metal-catalysed asymmetric synthesis¡ªI. Addressing the problem of ligand lability in rhodium-catalysed hydrosilations,
,Nitrogen-Containing Ligands for Asymmetric Homogeneous and Heterogeneous Catalysis