Category: 58081-05-3

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.Electric Literature of C4H6O3.Luk, Kin Chun; Wei, Chung Chen published the article 《Preparation of derivatives of (R)-1,2,4-butanetriol from L-ascorbic acid》 about this compound( cas:58081-05-3 ) in Synthesis. Keywords: butanetriol derivative; ascorbic acid conversion butanetriol derivative. Let’s learn more about this compound (cas:58081-05-3).

L-Threonate (I; R = H), obtained from L-ascorbic acid, was converted to thiocarbonate [I; R = PhOC(S)], which on deoxygenation with Bu3SnH/AIBN gave dihydroxybutanoate II. Treatment of II with aqueous H2SO4 in THF gave lactone III, while reduction of II with LiAlH4 gave butanetriol IV.

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Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem

Heterocyclic compounds can be divided into two categories: alicyclic heterocycles and aromatic heterocycles. Compounds whose heterocycles in the molecular skeleton cannot reflect aromaticity are called alicyclic heterocyclic compounds. Compound: 58081-05-3, is researched, Molecular C4H6O3, about Synthesis of 11-C-20-C segment of leukotriene B4 and migration of silyl protecting group, the main research direction is leukotriene B4 segment hydroxydecenal; silyloxyhydroxytetrahydrofuran Wittig silyl migration.SDS of cas: 58081-05-3.

A new synthesis of 11-C-20-C segment of leukotriene B4, 2(R)-hydroxydec-4(Z)-enal derivatives I (R = SiPh2CMe3, SiMe2CMe3, CPh3) using ascorbic acid as chiron is described. A partial or full migration of silyl protecting group from a secondary hydroxy group to a vicinal primary one is discovered in the Wittig reaction of hemiacetals II (R1 = SiPh2CMe3, SiMe2CMe3) with Me(CH2)5P+Ph3Br-.

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Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem

Hollingsworth, Rawle I. published the article 《Taming carbohydrate complexity: a facile, high-yield route to chiral 2,3-dihydroxybutanoic acids and 4-hydroxytetrahydrofuran-2-ones with very high optical purity from pentose sugars》. Keywords: synthon hydroxybutanoic acid hydroxytetrahydrofuranone lactone preparation; hydroxybutanoic acid hydroxytetrahydrofuranone lactone preparation pentose sugar.They researched the compound: (R)-4-Hydroxydihydrofuran-2(3H)-one( cas:58081-05-3 ).Quality Control of (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.

(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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Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem

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, Phytochemistry called Aliphatic and aromatic glucosides from Anoectochilus koshunensis, Author is Ito, Aiko; Kasai, Ryoji; Yamasaki, Kazuo; Sugimoto, Hiroyuki, which mentions a compound: 58081-05-3, SMILESS is O=C1OC[C@H](O)C1, Molecular C4H6O3, Product Details of 58081-05-3.

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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Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem

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.SDS of cas: 86404-63-9. The article 《Total Synthesis of (+)-Mycotrienol and (+)-Mycotrienin I》 in relation to this compound, is published in Journal of Organic Chemistry. Let’s take a look at the latest research on this compound (cas:58081-05-3).

A highly convergent asym. synthesis of the ansamycin antibiotics (+)-mycotrienin I (I) (R = cyclohexylcarbonyl-D-Ala) and (+)-mycotrienol (I) (R = H) (II) has been achieved through the synthesis and coupling of the C9-C16 subunit (III) and the aromatic subunit (IV). All four stereogenic centers were introduced using chiral allylsilane bond construction methodol. A key feature of the synthetic scheme includes the incorporation of the (E, E, E)-triene unit with simultaneous macrocyclization via a Stille-type coupling-macrocyclization.

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Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem

So far, in addition to halogen atoms, other non-metallic atoms can become part of the aromatic heterocycle, and the target ring system is still aromatic.Yin, Wei; Qiao, Chunhua researched the compound: (R)-4-Hydroxydihydrofuran-2(3H)-one( cas:58081-05-3 ).Recommanded Product: 58081-05-3.They published the article 《Synthesis of Epigoitrin from (R)-(+)-4-Hydroxy-γ-butyrolactone》 about this compound( cas:58081-05-3 ) in Journal of Heterocyclic Chemistry. Keywords: epigoitrin preparation. We’ll tell you more about this compound (cas:58081-05-3).

Epigoitrin (I) is one of the major components of several natural species, including Isatis tinctoria (Isatis indigotica) Fort, Brassica rapa rapa (turnip) and Brassica oleracea capitata (cabbage). It presents antithyroid and antivirus activities. The synthesis of the target compounds was achieved using com. available (R)-(+)-4-hydroxy-γ-butyrolactone as a starting material.

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Pyrroline – Wikipedia,
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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 Taming carbohydrate complexity: a facile, high-yield route to chiral 2,3-dihydroxybutanoic acids and 4-hydroxytetrahydrofuran-2-ones with very high optical purity from pentose sugars. Author is Hollingsworth, Rawle I..

(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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Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem

Recommanded Product: 58081-05-3. The protonation of heteroatoms in aromatic heterocycles can be divided into two categories: lone pairs of electrons are in the aromatic ring conjugated system; and lone pairs of electrons do not participate. Compound: (R)-4-Hydroxydihydrofuran-2(3H)-one, is researched, Molecular C4H6O3, CAS is 58081-05-3, about Identification of Novel Glycosidic Aroma Precursors in Saffron (Crocus sativus L.). Author is Straubinger, Markus; Bau, Brigitte; Eckstein, Susanne; Fink, Margit; Winterhalter, Peter.

The methanolic extract of saffron was separated with the aid of multilayer coil countercurrent chromatog. After purification by HPLC, the following seven novel carotenoid metabolites were identified on the basis of their spectral (UV, FTIR, MS, NMR, CD) data: (4R)-4-hydroxy-2,6,6-trimethylcyclohex-1-enecarbaldehyde O-β-D-gentiobioside (1), (4R)-4-hydroxy-2,6,6-trimethylcyclohex-1-enecarboxylic acid O-β-D-glucopyranoside (2), 6-hydroxy-3-(hydroxymethyl)-2,4,4-trimethylcyclohexa-2,5-dienone 6-O-β-D-glucopyranoside (3), (2Z)-3-methylpent-2-enedioic acid 1-[1-(2,4,4-trimethyl-3,6-dioxocyclohexenyloxy)-O-β-D-glucopyranosid-6-yl] ester (4), (5S)-5-hydroxy-7,7-dimethyl-4,5,6,7-tetrahydro-3H-isobenzofuran-1-one O-β-D-glucopyranoside (5), (1R,5S,6R)-5-(hydroxymethyl)-4,4,6-trimethyl-7-oxabicyclo[4.1.0]heptan-2-one O-β-D-glucopyranoside (6), and (1R)- 3,5,5-trimethylcyclohex-3-enol O-β-D-glucopyranoside (7).

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Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem

Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 58081-05-3, is researched, SMILESS is O=C1OC[C@H](O)C1, Molecular C4H6O3Journal, Tetrahedron called Enantiomerically pure β,γ-epoxyesters from β-hydroxylactones: synthesis of β-hydroxyesters and (-)-GABOB, Author is Larcheveque, M.; Henrot, S., the main research direction is hydroxybutanolide ring cleavage iodotrimethylsilane; iodohydrin cyclization silver oxide; epoxy ester preparation alkylation cuprate; hydroxy ester.Synthetic Route of C4H6O3.

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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Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem

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, Article, Research Support, Non-U.S. Gov’t, Journal of Medicinal Chemistry called Synthesis, X-ray Analysis, and Biological Evaluation of a New Class of Stereopure Lactam-Based HIV-1 Protease Inhibitors, Author is Wu, Xiongyu; Oehrngren, Per; Joshi, Advait A.; Trejos, Alejandro; Persson, Magnus; Arvela, Riina K.; Wallberg, Hans; Vrang, Lotta; Rosenquist, Aasa; Samuelsson, Bertil B.; Unge, Johan; Larhed, Mats, which mentions a compound: 58081-05-3, SMILESS is O=C1OC[C@H](O)C1, Molecular C4H6O3, Safety of (R)-4-Hydroxydihydrofuran-2(3H)-one.

In an effort to identify a new class of druglike HIV-1 protease inhibitors, stereopure β-hydroxy γ-lactam-containing inhibitors I (X = CH2, CH2CH2; R = H, Br, 2-pyridyl, 3-pyridyl, 4-pyridyl) have been synthesized and biol. evaluated. Three of these compounds were also cocrystd. with HIV-1 protease. The impact of the tether length of the central spacer (two or three carbons) was investigated. The compound I (X = CH2; R = Br) with a shorter tether and (3R,4S) absolute configuration exhibited high activity with a Ki of 2.1 nM and an EC50 of 0.64 μM. Further optimization by decoration of the P1′ side chain furnished an even more potent HIV-1 protease inhibitor (3R,4S)-I (X = CH2; R = 3-pyridyl) (Ki = 0.8 nM, EC50 = 0.04 μM). According to X-ray anal., this new class of inhibitors did not fully succeed in forming two sym. hydrogen bonds to the catalytic aspartates. The crystal structures of the complexes further explain the difference in potency between the shorter inhibitors (two-carbon spacer) and the longer inhibitors (three-carbon spacer).

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Reference:
Pyrroline – Wikipedia,
1-Pyrroline | C4H7N – PubChem