Zeatin-binding protein (67 ± 2 kDa) was isolated from the cytosol of the first leaf of 10-day-old barley plants. The protein fits to all requirements for a zeatin receptor: (i) it binds [3H]trans-zeatin reversibly and specifically, (ii) it is recognized by anti-idiotype antibodies from antiseru...

Cytokinin (CK) is a plant hormone that plays important regulatory roles in many aspects of plant growth and development. Although functions of CK and its biosynthesis pathway have been studied extensively, there is still no efficient biosynthesis inhibitor, which would be useful for studying CK ...

Cytokinins (CKs) are an important group of phytohormones. Their tightly regulated and balanced levels are essential for proper cell division and plant organ development. Here we report precise quantification of CK metabolites and other phytohormones in maize reproductive organs in the course of ...

A pot experiment was conducted to compare the content of endogenous trans-zeatin (Z), plant arsenic (As) uptake and physiological indices in the fronds of As-hyperaccumulator (Pteris cretica var. nervosa) and non-hyperaccumulator (Pteris ensiformis). Furthermore, a stepwise regression method was...

Controlling the conjugate degree of the molecules and regulating the properties of excited states are critical for determining the photoluminescence (PL) and electroluminescence (EL) properties of twisted donor–acceptor (D–A) type blue emitters. Here, two novel phenothiazine-based blue emitter...

Fifteen carbonyl compounds that are known to be flavor components have beenanalyzed as their 2,4-dinitrophenylhydrazones by gas-liquid chromatography on a 2% SE-30 column both isothermally at 232° and with a linear temperature program at a rate of 4°/min from 200 to 270° and on a 12% F-60 col...

The molecular structure of bicyclopentyl was established by gas phase electron diffraction, and it is compared with that calculated previously by molecular mechanics (MM3) and currently by ab initio methods (6–31G∗). There is good agreement between theory and experiment for the structural param...

Measurements leading to the calculation of the standard thermodynamic properties for gaseous bicyclopentyl (Chemicals s registry number [1636-39-1]) are reported. Experimental methods include adiabatic heat-capacity calorimetry, comparative ebulliometry, and differential-scanning calorimetry (d....

Oxidative coupling of phenylacetic acid ester of homochiral 1,1′-bi-2-naphthol 2 was achieved by reaction with TiCl4/Et3N to obtain the corresponding 2,3-diphenylsuccinic acid derivative 3, which on reduction using the NaBH4/I2 reagent gives homochiral 2,3-diphenyl-1,4-butanediol. X-Ray structu...

116 S-Benzylthiouronium suits have been prepared and were, if possible, checked by titration with perchloric acid in glacial acetic acid on a semi-micro scale. Out of these, 110 are salts of carboxylic acids, 2 of snlfonic acids, and 4 of nitrophenols. The melting points determined according to ...

Synthetic strategies to gain access to all four isomers of 3-(3-chloro-1H-pyrazol-5-yl)quinoxalin-2(1H)ones with monosubstituted benzo core (i.e., compounds 8a–d) are described. Preparation of these heterocyclic compounds succeeded starting from only two different substituted 2-nitroanilines (i...

Niclosamide is an antihelmintic drug susceptible to being metabolized into a bacterial mutagen by the action of enzymes present in the S9 activation mixture. Additional results from genotoxic studies in rodents and humans suggest that the drug is absorbed from the gastrointestinal tract, and mut...

The standard (po=0.1 MPa) molar enthalpies of formation for crystalline 2-chloro-4-nitroaniline and 2-chloro-5-nitroaniline were derived from the standard molar enthalpies of combustion, in oxygen, at the T=298.15 K, measured by rotating bomb combustion calorimetry. The Knudsen mass-loss effusio...

The present study was performed to investigate the effects of kavain on the sleep-wake cycle in comparison with that of rilmazafone and diphenhydramine using sleep-disturbed rats. Electrodes for the electroencephalogram (EEG) and electromyogram (EMG) were implanted into Wistar rats. Total awake ...

BackgroundKavalactones are pharmacologically active compounds present in preparations of the root trunk of Piper methysticum Forst, known as kava. This work describes the analgesic activity of some synthesized analogues of synthetic kavain, which is the main component of kava.

Kavain metabolism in humans was the target of this current investigation. In the present study a high-performance liquid chromatographic (HPLC–DAD) assay method for the simultaneous determination of kavain and its main metabolites (p-hydroxykavain, p-hydroxy-5,6-dehydrokavain and p-hydroxy-7,8-...

1-(N,N-dimethylamino)-1-silacyclohexane 1 was synthesized. Contributions of the conformers of 1, Eq-trans: Eq-gauche: Ax-trans, were found to be 55(15):15(15):30(15) mol.% in gas phase at 288 K from gas electron diffraction. The enthalpy ΔH = 0.29(15) kcal/mol for Ax-to-Eq transition was measur...

This paper demonstrates the structural and spectral characteristics of conjugated pyrazoles 3-(p-N,N dimethyl aminophenyl)-5-phenyl-1H-pyrazole (DAPP) and 3-(p-nitrophenyl)-5-phenyl-1H-pyrazole (NPP), with particular attention to the influence of functional group on their tautomeric behaviour an...

Novel substituted phthalonitrile derivatives were obtained by the reaction of 2-(4-hydroxyphenylazo)benzoic acid and 4,5-dichloro-1,2-dicyanobenzene, or 4-nitrophthalonitrile. Peripherally phenoxy phenyl diazenyl benzoic acid substituted zinc (II) phthalocyanine complexes, and their sodium salts...

1.1.|Isolating Components 1, 1′, 2 and 3 from bovine serum albumin solution heat treated at 65 °C and at pH 9.0 (Aoki, K., Hiramatsu, K., Kimura, K., Kancshina, S., Nakamura, Y. and Sato, K. (1969) Bull. Inst. Chem. Res. Kyoto Univ. 47, 274–282 and Aoki, K., Sato, K., Nagaoka, S., Kamada, M. ...