Category: 24621-61-2

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Six secoiridoid glucosides from Adina racemosa

Six novel secoiridoid glucosides, adinosides A (1), B (2), C (3), D (4), E (5), and grandifloroside 11-methyl ester (6) were isolated, together with 27 known compounds, from the dried leaves, flowers, and twigs of Adina racemosa. The structures of the new compounds were determined by spectroscopic (NMR, MS) and chemical means.

The result showed that such a combination of chemo- and biocatalysis improved the catalytic yield more than two times compared with that of sole metal catalysis.COA of Formula: C4H10O2. I hope my blog about 24621-61-2 is helpful to your research.

Reference£º
Synthesis and Crystal Structure of a Chiral?C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur¨Cnitrogen¨Coxygen ligand derived from aminothiourea and sodium?D-camphor-¦Â-sulfonate

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An efficient synthesis of enantiomerically pure (R)-(2-benzyloxyethyl)oxirane from (S)-aspartic acid

A 3-step synthesis of the title compound from (S)-aspartic acid is described. The overall yield of this process is 65% and the enantiomeric purity (ep) of the product is greater than 99%.

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Reference£º
Synthesis and Crystal Structure of a Chiral?C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur¨Cnitrogen¨Coxygen ligand derived from aminothiourea and sodium?D-camphor-¦Â-sulfonate

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Design and synthesis of a novel class of dual PPARgamma/delta agonists

The design and synthesis of dual PPAR gamma/delta agonist (R)-3-{2-ethyl-4-[3-(4-ethyl-2-pyridin-2-yl-phenoxy)-butoxy]-phenyl}propionic acid is described. This compound dose-dependently lowered plasma glucose in hyperglycemic male Zucker diabetic fatty (ZDF) rats and produced less weight gain relative to rosiglitazone at an equivalent level of glucose control.

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Reference£º
Synthesis and Crystal Structure of a Chiral?C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur¨Cnitrogen¨Coxygen ligand derived from aminothiourea and sodium?D-camphor-¦Â-sulfonate

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ORGANIC COMPOUNDS

The application relates to novel substituted piperidines of the general formula (I) in which R1, R2, R3, R 4, W, X, Z, m and n are each as defined in detail in the description, to a process for their preparation and to the use of these compounds as medicines, in particular as renin inhibitors.

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Reference£º
Synthesis and Crystal Structure of a Chiral?C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur¨Cnitrogen¨Coxygen ligand derived from aminothiourea and sodium?D-camphor-¦Â-sulfonate

Chemistry is traditionally divided into organic and inorganic chemistry. Application In Synthesis of (S)-Butane-1,3-diol, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent£¬Which mentioned a new discovery about 24621-61-2

Redox-triggered C-c coupling of alcohols and vinyl epoxides: Diastereo- and enantioselective formation of all-carbon quaternary centers via tert -(Hydroxy)-prenylation

Iridium catalyzed primary alcohol oxidation triggers reductive C-O bond cleavage of isoprene oxide to form aldehyde-allyliridium pairs that combine to form products of tert-(hydroxy)-prenylation, a motif found in >2000 terpenoid natural products. Curtin-Hammett effects are exploited to enforce high levels of anti-diastereo- and enantioselectivity in the formation of an all-carbon quaternary center. The present redox-triggered carbonyl additions occur in the absence of stoichiometric byproducts, premetalated reagents, and discrete alcohol-to-aldehyde redox manipulations.

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Reference£º
Synthesis and Crystal Structure of a Chiral?C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur¨Cnitrogen¨Coxygen ligand derived from aminothiourea and sodium?D-camphor-¦Â-sulfonate

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Synthesis of chiral beta3-aminoxy peptides

A series of chiral beta3-aminoxy acids or amides with various side chains have been synthesized via two different approaches. One is the Arndt-Eistert homologation approach, using chiral alpha-aminoxy acids as starting materials. The other approach, utilizing the enantioselective reduction of beta-keto esters catalyzed by baker’s yeast or chiral Ru(II) complexes, produces chiral beta3-aminoxy acids with nonproteinaceous side chains. The oligomers of beta3-aminoxy acids can be readily prepared using EDCI/HOAt as the coupling reagent.

Note that a catalyst decreases the activation energy for both the forward and the reverse reactions and hence accelerates both the forward and the reverse reactions.Related Products of 24621-61-2, you can also check out more blogs about24621-61-2

Reference£º
Synthesis and Crystal Structure of a Chiral?C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur¨Cnitrogen¨Coxygen ligand derived from aminothiourea and sodium?D-camphor-¦Â-sulfonate

Synthetic Route of 24621-61-2, Chemistry is an experimental science, and the best way to enjoy it and learn about it is performing experiments.Introducing a new discovery about Synthetic Route of 24621-61-2, Name is (S)-Butane-1,3-diol

Efficient synthesis of the ketone body ester (R)-3-hydroxybutyryl-(R)-3-hydroxybutyrate and its (S,S) enantiomer

The ketone body ester (R)-3-hydroxybutyryl-(R)-3-hydroxybutyrate and its (S,S) enantiomer were prepared in a short, operationally simple synthetic sequence from racemic beta-butyrolactone. Enantioselective hydrolysis of beta-butyrolactone with immobilized Candida antarctica lipase-B (CAL-B) results in (R)-beta-butyrolactone and (S)-beta-hydroxybutyric acid, which are easily converted to (R) or (S)-ethyl-3-hydroxybutyrate and reduced to (R) or (S)-1,3 butanediol. Either enantiomer of ethyl-3-hydroxybutyrate and 1,3 butanediol are then coupled, again using CAL-B, to produce the ketone body ester product. This is an efficient, scalable, atom-economic, chromatography-free, and low cost synthetic method to produce the ketone body esters.

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Reference£º
Synthesis and Crystal Structure of a Chiral?C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur¨Cnitrogen¨Coxygen ligand derived from aminothiourea and sodium?D-camphor-¦Â-sulfonate

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Diastereo- and Enantioselective Iridium Catalyzed Coupling of Vinyl Aziridines with Alcohols: Site-Selective Modification of Unprotected Diols and Synthesis of Substituted Piperidines

The chiral cyclometalated pi-allyliridium ortho-C,O-benzoate complex (R)-Ir-VIb derived from [Ir(cod)Cl]2, allyl acetate, 4-cyano-3-nitro-benzoic acid, and (R)-MeO-BIPHEP catalyzes the coupling of N-(p-nitrophenylsulfonyl) protected vinyl aziridine 3a with primary alcohols 1a-1l to furnish branched products of C-C bond formation 4a-4l with good levels of anti-diastereo- and enantioselectivity. In the presence of 2-propanol, but under otherwise identical conditions, vinyl aziridine 3a and aldehydes 2a-2l engage in reductive coupling to furnish an equivalent set of adducts 4a-4l with roughly equivalent levels of anti-diastereo- and enantioselectivity. Using enantiomeric iridium catalysts, vinyl aziridine 3a reacts with unprotected chiral 1,3-diols 1m-1o in a site-selective manner to deliver the diastereomeric products of C-allylation syn-4m, -4n, -4o and anti-4m, -4n, -4o, respectively, with good isolated yields and excellent levels of catalyst-directed diastereoselectivity. These adducts were directly converted to the diastereomeric 2,4,5-trisubstituted piperidines syn-5m, -5n, -5o and anti-5m, -5n, -5o. (Chemical Equation Presented).

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Reference£º
Synthesis and Crystal Structure of a Chiral?C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur¨Cnitrogen¨Coxygen ligand derived from aminothiourea and sodium?D-camphor-¦Â-sulfonate

Let¡¯s face it, organic chemistry can seem difficult to learn. Especially from a beginner¡¯s point of view. Like name: (S)-Butane-1,3-diol, Name is (S)-Butane-1,3-diol. In a document type is Article, introducing its new discovery., name: (S)-Butane-1,3-diol

BORON FLUORIDE PROMOTED CLEAVAGE OF ACETALS BY ORGANOCOPPER REAGENTS. APPLICATION TO ASYMMETRIC SYNTHESIS

In the presence of BF3*Et2O, organocopper and cuprate reagents promote the substitution of one alkoxy group of an acetal.Under the same conditions, alkoxy tetrahydropyrans react selectively, by ring cleavage.Chiral cyclic acetals, having a C2 axis of symmetry are diastereoselectively cleaved.The method serves to synthesize chiral secondary alcohols, after the removal of the chiral auxiliary.

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Reference£º
Synthesis and Crystal Structure of a Chiral?C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur¨Cnitrogen¨Coxygen ligand derived from aminothiourea and sodium?D-camphor-¦Â-sulfonate

Chemistry is traditionally divided into organic and inorganic chemistry. Application In Synthesis of (S)-Butane-1,3-diol, The former is the study of compounds containing at least one carbon-hydrogen bonds.In a patent£¬Which mentioned a new discovery about 24621-61-2

Preparation of enantiomerically pure 1,3-butanediol from threonine

Enantiomerically pure R or S 1,3-butanediols were prepared in four steps from L to D threonine by nitrous deamination in the presence of bromide ion followed by esterification and reduction.

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Reference£º
Synthesis and Crystal Structure of a Chiral?C3-Symmetric Oxygen Tripodal Ligand and Its Applications to Asymmetric Catalysis,
Chiral lanthanide(III) complexes of sulphur¨Cnitrogen¨Coxygen ligand derived from aminothiourea and sodium?D-camphor-¦Â-sulfonate