Heat stress (HS) due to increased air temperature is a major agricultural problem. On the other hand, short-term HS can represent a natural easy-to-use elicitor of bioactive compounds in plants. Similar elicitations can be induced by biotechnological approaches such as hydroponic cultures. The p...

Gametophytes of the liverwort Marchantia polymorpha contain both abscisic acid and 2-trans-abscisic acid in a 1.2: 1 ratio. Abscisic acid is present in concentrations similar to those in higher plants. Indole-3-acetic acid was also detected. This is the first chemical demonstration that ABA and ...

SummaryThe time course of the metabolization of abscisic acid (ABA) and its trans-trans isomer (trans-ABA) by cell suspension cultures of Lycopersicon peruvianum was investigated during 20 min and 5 h incubation. Whereas ABA is biotransformed by the cells both to acidic metabolites and to glucos...

SummaryThe influence of abscisic acid (ABA) and t cinnamic acid, individually and in combination, on senescence of excised nasturtium (Tropaeolum majus) leaves as related to stomatal movements has been studied. ABA (10∔5 M) induced an acceleration of chlorophyll loss in dark that was accompanied...

The ligand 2-isonicotinoyl-N-phenylhydrazine-1-carboxamide (H3L) and its metal complexes with Co(II), Ni(II), Cu(II) and Zn(II) acetates have been synthesized. The isolated compounds have been characterized by elemental analyses, FT-IR, 1H NMR, 13C NMR, ESR, mass, electronic spectra, electrical ...

Nicotinic and isonicotinic thiosemicarbazide or hydrazine carbothioamides 3–27 were synthesized and the structures of synthetic compounds were elucidated by various spectroscopic techniques such as EI-MS, 1H-, and 13C NMR. Synthetic derivatives were evaluated for their urease inhibitory activit...

The new Mn(II) polymeric complexes [Mn(pot)2(H2O)2]n (1) {pot− = 5-(4-pyridyl)-1,3,4-oxadiazole-2-thione} and [Mn(ttfa)(μ-pchcm)]n (3) {Hpchcm = [N′-(pyridine-4-carbonyl)-hydrazine]-carbodithioic acid methyl ester}, from the precursor [Mn(ttfa)2(bpy)] (2) {Httfa = thenoyltrifluoroacetone}, as ...

In present work, we have analysed the structural property of newly synthesized ligand and its coordination complex molecules with Ni2+, Mn2+ and Fe3+. The spectroscopic techniques UV–visible, IR, Raman and DFT methods are used. The newly synthesized ligand 1-isonicotinoyl-3-thiosemicarbazide (H...

The lipase mediated selective O-acylation and alcoholysis of the corresponding alcohols/butanoates have been investigated for the production of both (R)- and (S)-1-(2-aryl-thiazol-5-yl)ethanols. In terms of stereoselectivity and activity, CaL-B mediated selective acylation gave similar good resu...

IntroductionMetabotropic glutamate subtype receptor 1 (mGluR1) is implicated in several neuropsychiatric disorders and is a target for drug development. [18F]FIMX ([18F]4-fluoro--N-methyl-N--(4-(6-(methylamino)pyrimidin-4-yl)thiazol-2-yl)benzamide) is an effective radioligand for imaging brain m...

2-amino-4-methylbenzothiazole (AMBT) and one of its derivatives (E)-2-methylbenzo[d]thiazol-2-yl)imino-4-methyl) phenol (MBTP) were used as synergistic pair for the protection of mild steel in 0.5 M HCl. The combination of inhibitors, AMBT-MBTP, adsorbs on electrode surface through chemical and ...

N-Methylthio β-lactams represent a novel family of antibacterial agents for methicillin-resistant Staphylococcus aureus (MRSA). The structure–activity functions and mechanism of action of these compounds, although still largely undefined, differ dramatically from those of all previously report...

A novel o-carborane derivative incorporating 4-amino-phthalimide as fluorophore group 1,2-bis(4-amino-phthalimidomethyl)-1,2-dicarba–closo-dodecaborane has been successfully synthesized and characterized. The new compound is found to emit green light. Incorporation of o-carborane cluster into t...

We recently designed a series of N-[4-(t-amino-yl)-but-2-yn-1-yl] isoindoline-1,3-diones as anti-inflammatory compounds, called ZM compounds. These ZM compounds were categorized according to the nature of the cyclic amino groups into ZM2, ZM3, ZM4, and ZM5 and were shown to reduce carrageenan-in...

Aminoacetylenic isoindoline-1,3-dione derivatives were synthesized from the reaction of potassium phthalimide with propargyl bromide to generate 2-(prop-2-yn-1-yl)isoindoline-1,3-dione (ZM1). Treatment of 2-(prop-2-yn-1-yl)isoindoline-1,3-dione with appropriate cyclic amines through Mannich reac...

Knoevenagel condensation between 3-nitro-2-pyridinecarbaldehyde and diethyl malonate catalyzed by titanium(IV) chloride gave diethyl 3-nitro-2-pyridylidenemalonate which was oxidized with peracetic acid to give corresponding 1-oxide. Reaction of the latter with diethylamine in the presence of pr...

Two new 2-methoxy -4-chromanones were synthesized from 3-formylchromone and 2-aminopyridine/2-amino-5-nitropyridine in methanolic media and was characterised using various spectral and analytical techniques. Reactions of these ligands with copper (II), zinc (II) and nickel (II) acetates lead to ...

Publisher SummaryThis chapter provides an overview of further advances in pyridazine chemistry. The chapter illustrates that many bioactive natural products containing pyridazine rings as a part of their molecules have been discovered and their structures determined. Many new synthetic approache...

In the search for new antifungal compounds and to explore structure activity relationships, a series of 24 chiral benzyl amine type antifungals was synthesised and characterised. In vitro testing against the human pathogen Cryptococcus neoformans revealed that several derivatives had MIC50 value...

The thermochemistry of 4-HOC6H4COR (R = H, CH3, C2H5, n-C3H7, n-C4H9, n-C5H11, and n-C6H13) compounds was investigated using enthalpy of vaporization/sublimation measurements by Calvet-drop microcalorimetry and W1-F12 and CCSD(T)-F12 ab initio calculations. Based on the obtained results, standar...