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Genomic landscape of biosynthetic gene clusters in Iranian extremophiles reveals prolific metabolite potential, prophage associations, and integrated defensive-metabolic islands. [PDF]
BMC MicrobiolRahimian M +2 more
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Kinetic study on the hydrogenation of dimethyl succinate to γ-butyrolactone. [PDF]
RSC AdvDu C +5 more
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FACILE SYNTHESIS OF 2-METHYLENE-4-BUTYROLACTONES
Chemistry Letters, 1986Abstract 2-Methylene-4-butyrolactones were conveniently synthesized by treatment of an aldehyde with 2-carboethoxyallyl(-ic) bromide and metallic tin (and aluminum) in good yields. Protolichesterinic acid was synthesized by employing the method.
Junzo Nokami +3 more
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CLINICAL APPLICATION OF 4‐HYDROXYBUTYRATE SODIUM AND 4‐BUTYROLACTONE IN NEUROPSYCHIATRIC PATIENTS
Psychiatry and Clinical Neurosciences, 1966Summary4‐hydroxybutyrate sodium (HB) and/or 4‐butyrolactone (BL) were applied orally or intravenously to 288 neuropsychiatric patients and 9 normal adults.The results obtained were as follows:1. In 9 normal adults to whom 1 to 8 gm of the drugs were administered, no serious changes were observed in respiration, heart rate, blood pressure and ...
Zenryu Tanaka +8 more
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Advanced Synthesis & Catalysis, 2022
AbstractIn this paper, we designed and synthesized 4‐vinyl‐4‐butyrolactone as a precursor to generate the zwitterionic allylpalladium intermediates, which behaved as five‐membered all‐carbon synthon in palladium‐catalyzed (5+3) annulation with azomethine imines, giving eight‐membered ring‐fused heterocycles (26 examples, 49% to 97% yield, >20:1 dr ...
Sen Yang +7 more
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AbstractIn this paper, we designed and synthesized 4‐vinyl‐4‐butyrolactone as a precursor to generate the zwitterionic allylpalladium intermediates, which behaved as five‐membered all‐carbon synthon in palladium‐catalyzed (5+3) annulation with azomethine imines, giving eight‐membered ring‐fused heterocycles (26 examples, 49% to 97% yield, >20:1 dr ...
Sen Yang +7 more
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Polygraphic study of the effects of sodium 4-hydroxybutyrate and 4-butyrolactone in man
Physiology & Behavior, 1966Abstract Polygraphic observations were made after intravenous or intracarotid administration of sodium 4-hydroxy utyrate and 4-butyrolactone in man. At first theta bursts, then large continuous delta waves appeared in the EEG with increased EMG, accelerated respiration and heart rate. Consciousness was maintained.
Chihiro Ohye +3 more
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Macromolecular Chemistry and Physics, 1998
Copolymers obtained from the copolymerization of (R,S)-3-butyrolactone ((R,S)-3-BL) and 4-butyrolactone (4-BL) catalyzed by isobutylaluminoxane were compared in structure and properties to copolymers having the same types of repeating units produced by Alcaligenes eutrophus when grown with an appropriate substrate or substrate mixtures. Copolymers with
Bin Wu +2 more
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Copolymers obtained from the copolymerization of (R,S)-3-butyrolactone ((R,S)-3-BL) and 4-butyrolactone (4-BL) catalyzed by isobutylaluminoxane were compared in structure and properties to copolymers having the same types of repeating units produced by Alcaligenes eutrophus when grown with an appropriate substrate or substrate mixtures. Copolymers with
Bin Wu +2 more
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The Journal of Physical Chemistry, 1985
Solutions of LiAsF/sub 6/ at 298.2 K were studied by audiofrequency conductance in the concentration range 10/sup -4/-10/sup -2/ mol dm/sup -3/ and by radiofrequency ultrasonic absorption in the concentration range 0.05-0.5 mol dm/sup -3/. The solvents employed were mixtures of 4-butyrolactone with 2-methyltetrahydrofuran varying in compositions from ...
Yoshifumi Harada +2 more
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Solutions of LiAsF/sub 6/ at 298.2 K were studied by audiofrequency conductance in the concentration range 10/sup -4/-10/sup -2/ mol dm/sup -3/ and by radiofrequency ultrasonic absorption in the concentration range 0.05-0.5 mol dm/sup -3/. The solvents employed were mixtures of 4-butyrolactone with 2-methyltetrahydrofuran varying in compositions from ...
Yoshifumi Harada +2 more
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Electrochimica Acta, 1985
Abstract The conductivities of five 1:1 electrolytes have been measured in mixtures of dimethoxyethane with propylene carbonate and 4-butyrolactone. As in previous studies involving mixed ethereal solvents, a maximum in the molar conductances is found for a specific solvent mixture. From consideration of single ion mobilities, Stokes' radii, and the
M. Salomon, E.J. Plichta
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Abstract The conductivities of five 1:1 electrolytes have been measured in mixtures of dimethoxyethane with propylene carbonate and 4-butyrolactone. As in previous studies involving mixed ethereal solvents, a maximum in the molar conductances is found for a specific solvent mixture. From consideration of single ion mobilities, Stokes' radii, and the
M. Salomon, E.J. Plichta
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Journal of Chromatography A, 1990
Abstract Reversed-phase high-performance liquid chromatography—thermospray mass spectrometric (HPLC—MS) characteristics of four sets of lactonic complexes (one 4-butyrolactones and three dilactone complexes) derived from antimycin A were investigated. Three types of 8-hydroxy analogues were also included in the study. Pairs of a–b structures isomeric
S.L. Abidi, S.C. Ha, R.T. Rosen
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Abstract Reversed-phase high-performance liquid chromatography—thermospray mass spectrometric (HPLC—MS) characteristics of four sets of lactonic complexes (one 4-butyrolactones and three dilactone complexes) derived from antimycin A were investigated. Three types of 8-hydroxy analogues were also included in the study. Pairs of a–b structures isomeric
S.L. Abidi, S.C. Ha, R.T. Rosen
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