Category: 58081-05-3

The three-dimensional configuration of the ester heterocycle is basically the same as that of the carbocycle. Compound: (R)-4-Hydroxydihydrofuran-2(3H)-one(SMILESS: O=C1OC[C@H](O)C1,cas:58081-05-3) is researched.HPLC of Formula: 58081-05-3. The article 《Chiroptical properties of lactones. II. Electronic rotatory strengths of the n .far. π* transition in saturated γ- and δ-lactones》 in relation to this compound, is published in Journal of the Chemical Society, Perkin Transactions 2: Physical Organic Chemistry (1972-1999). Let’s take a look at the latest research on this compound (cas:58081-05-3).

The chiroptical properties associated with the n→π* transition of dissymmetric saturated γ- and δ-lactones were calculated and relations between the chiroptical observables and the stereochem. and electronic structural features were examined The calculations were based on the INDO MO method for the electronic structure of the mol. systems and excited states were constructed in the virtual orbital-CI approximation The highest and second highest occupied orbitals calculated for each of the 17 structures studied are, resp., the inplane n and the out-of-plane π° nonbonding orbitals localized on the O:CO group. The lowest lying singlet state is nπ* and the calculated transition wavelengths for transitions in this state are 197-230 nm. The calculated n→π* rotatory strengths and dissymmetry factors agree with experiment

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Application In Synthesis of (R)-4-Hydroxydihydrofuran-2(3H)-one. The fused heterocycle is formed by combining a benzene ring with a single heterocycle, or two or more single heterocycles. Compound: (R)-4-Hydroxydihydrofuran-2(3H)-one, is researched, Molecular C4H6O3, CAS is 58081-05-3, about Glycosidic constituents from in vitro Anoectochilus formosanus. Author is Du, Xiao-Ming; Sun, Ning-Yi; Irino, Nobuto; Shoyama, Yukihiro.

The glycosidic constituents of whole plants of Anoectochilus formosanus propagated by tissue culture were investigated. A new compound, 2-(β-D-glucopyranosyloxymethyl)-5-hydroxymethylfuran, along with the known compounds, 3-(R)-3-β-D-glucopyranosyloxybutanolide (kinsenoside), 3-(R)-3-β-D-glucopyranosyloxy-4-hydroxybutanoic acid, 1-O-isopropyl-β-D-glucopyranoside, (R)-(+)-3,4-dihydroxybutanoic acid γ-lactone, 4-(β-D-glucopyranosyloxy)benzyl alc., (6R,9S)-9-hydroxy-megastigma-4,7-dien-3-one-9-O-β-D-glucopyranoside, and corchoionoside C were isolated.

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The preparation of ester heterocycles mostly uses heteroatoms as nucleophilic sites, which are achieved by intramolecular substitution or addition reactions. Compound: (R)-4-Hydroxydihydrofuran-2(3H)-one( cas:58081-05-3 ) is researched.Application In Synthesis of (R)-4-Hydroxydihydrofuran-2(3H)-one.Tanaka, Akira; Yamashita, Kyohei published the article 《A novel synthesis of (R)- and (S)-4-hydroxytetrahydrofuran-2-ones》 about this compound( cas:58081-05-3 ) in Synthesis. Keywords: furanone hydro hydroxy chiral; hydroxy lactone chiral; butanolide hydroxy chiral; dioxolaneacetate methyl; dioxaspirodecaneacetate chiral; spirodioxadecaneacetate chiral. Let’s learn more about this compound (cas:58081-05-3).

The hydroxy ester I (R = H, R1 = OH), prepared from L-ascorbic acid by sequential treatment with acetone and AcCl, 30% H2O2 and CaCO3, and Me2SO4, was treated with MeSO2Cl and pyridine in CH2Cl2 to give 90% I (R = H, R1 = MeSO3), which, when heated at 85° with LiCl in DMF furnished a mixture of the erythro and threo chloro esters I (R = Cl, R1 = H; R = H, R1 = Cl) (II). Upon hydrogenolysis with 10% Pd/C in the presence of Et3N, II yielded the ester I (R = R1 = H), which was treated with dilute HCl giving a nearly quant. yield of hydroxylactone III. The (S)-enantiomer was analogously prepd from D-isoascorbic acid.

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Most of the compounds have physiologically active properties, and their biological properties are often attributed to the heteroatoms contained in their molecules, and most of these heteroatoms also appear in cyclic structures. A Journal, Tetrahedron called Enantiomerically pure β,γ-epoxyesters from β-hydroxylactones: synthesis of β-hydroxyesters and (-)-GABOB, Author is Larcheveque, M.; Henrot, S., which mentions a compound: 58081-05-3, SMILESS is O=C1OC[C@H](O)C1, Molecular C4H6O3, Related Products of 58081-05-3.

The preparation of enantiomerically pure β,γ-epoxy esters was achieved by chemoselective opening of β-hydroxybutanolides with Me3SiI followed by cyclization of the resulting iodohydrins with Ag2O. The reaction of these epoxy esters with lithio- or magnesiocuprates afforded stereochemically pure α-substituted-β-hydroxy esters. Alternatively, the title compound, (R)-H2NCH2CH(OH)CH2CO2H, was synthesized in optically pure form from the iodohydrin (R)-ICH2CH(OH)CH2CO2Et.

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Application In Synthesis of (R)-4-Hydroxydihydrofuran-2(3H)-one. The mechanism of aromatic electrophilic substitution of aromatic heterocycles is consistent with that of benzene. Compound: (R)-4-Hydroxydihydrofuran-2(3H)-one, is researched, Molecular C4H6O3, CAS is 58081-05-3, about New chiral synthons. β,γ-Epoxy esters. Application to the synthesis of enantiomerically pure β-hydroxy esters. Author is Larcheveque, Marc; Henrot, Serge.

The preparation of optically pure β,γ-epoxy esters I (R = H, Me) was achieved through the opening of 3-hydroxy butanolides II with trimethylsilyl iodide followed by cyclization with silver oxide. I react with organocuprates to afford β-hydroxy esters III (R1 = Me, Et, Bu, Me2C:CH, BuCH:CH) of high enantiomeric purity.

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Nakagawa, Atsushi; Suzuki, Takahiro; Kato, Ko; Shinmyo, Atsuhiko; Suzuki, Toshio published an article about the compound: (R)-4-Hydroxydihydrofuran-2(3H)-one( cas:58081-05-3,SMILESS:O=C1OC[C@H](O)C1 ).HPLC of Formula: 58081-05-3. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:58081-05-3) through the article.

(S)-4-Chloro-3-hydroxybutyrate (CHB) is essential for the synthesis of biol. and pharmacol. important compounds Rhizobium sp. DS-S-51 isolated from soil samples showed hydrolytic activity toward (R)-CHB in the racemate to (R)-3-hydroxy-γ-butyrolactone (HL) under a simple composition of the reaction. Residual (S)-CHB was obtained with high optical purity. The gene encoding the enzyme concerned, designated CHB hydrolase, was isolated from DS-S-51, and the gene was highly expressed in Escherichia coli JM109. When the resolution of racemic Me CHB (CHBM) as a substrate was performed using this recombinant cell, JM109 (pKK-R1), the hydrolytic activity was found to be 40-fold greater than that of DS-S-51, and the maximum concentration of the substrate added increased 2-fold. Moreover, (R)-HL was also obtained without decreasing the optical purity compared with that when (R)-CHBM was used as a substrate.

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Mercado-Marin, Eduardo V.; Chheda, Pratik Rajesh; Faulkner, Andrea; Carrera, Diane published the article 《Magnesium ethoxide mediated lactone aminolysis with aminoheterocycles》. Keywords: aromatic amine lactone aminolysis reaction; amino amide preparation.They researched the compound: (R)-4-Hydroxydihydrofuran-2(3H)-one( cas:58081-05-3 ).Name: (R)-4-Hydroxydihydrofuran-2(3H)-one. Aromatic heterocyclic compounds can be divided into two categories: single heterocyclic and fused heterocyclic. In addition, there is a lot of other information about this compound (cas:58081-05-3) here.

A mild method for the aminolysis of lactones with aminoheterocycles in the presence of magnesium ethoxide was described. A wide range of electronically diverse aminoheterocycles and substituted lactones successfully participated in this transformation to furnish the resulting amido-alc. products. Further application of this method to the synthesis of chiral α-amino amides derivatives was also described.

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In organic chemistry, atoms other than carbon and hydrogen are generally referred to as heteroatoms. The most common heteroatoms are nitrogen, oxygen and sulfur. Now I present to you an article called Aliphatic and aromatic glucosides from Anoectochilus koshunensis, published in 1993-07-31, which mentions a compound: 58081-05-3, mainly applied to glycoside aliphatic aromatic Anoectochilus, COA of Formula: C4H6O3.

A new simple aliphatic glucoside, 3-(R)-3-β-D-glucopyranosyloxybutanolide (kinsenoside) with its congeners and a heterocyclic aromatic glucoside, β-glucopyranosyl-3-pyridinemethanol (nicoloside) were isolated from whole plants of A. koshunensis. Their structures were elucidated from chem. and spectroscopic evidence.

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Hollingsworth, Rawle I. published an article about the compound: (R)-4-Hydroxydihydrofuran-2(3H)-one( cas:58081-05-3,SMILESS:O=C1OC[C@H](O)C1 ).Related Products of 58081-05-3. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:58081-05-3) through the article.

(S)-3,4-Dihydroxybutanoic acid and its γ-lactone [(S)-4-hydroxytetrahydrofuran-2-one] are important four-carbon synthons obtainable from some substituted D-hexose sugars and from L-malic acid. Until now there has been no easy route to the R-isomers because of the rarity both of suitably substituted L-hexose sugars and D-malic acid. Here we describe a method for preparing both enantiomeric forms of the free acids and their corresponding γ-lactones from pentose sugars.

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Zhang, Xiang; Huang, Hai-hong; Chen, Qing-hun published an article about the compound: (R)-4-Hydroxydihydrofuran-2(3H)-one( cas:58081-05-3,SMILESS:O=C1OC[C@H](O)C1 ).Electric Literature of C4H6O3. Aromatic heterocyclic compounds can be classified according to the number of heteroatoms or the size of the ring. The authors also want to convey more information about this compound (cas:58081-05-3) through the article.

A new total synthesis of the bioactive compounds, kinsenoside (I; R1 = H) and goodyeroside A (II; R2 = H), has been accomplished from readily available starting materials. The chiral 2(5H)-furanone III and its enantiomer IV were employed as the key chiral intermediates to construct the chiral glycosides V and VI with the appropriate stereochem. The spectral data of the target compounds and their acetylated derivatives (I; R1 = Ac) and (II; R2 = Ac) are identical with those of the natural and corresponding acetylated products.

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