ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was e... more ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Universidad de Malaga. Campus de Excelencia Internacional Andalucia Tech. Plan Propio de Investig... more Universidad de Malaga. Campus de Excelencia Internacional Andalucia Tech. Plan Propio de Investigacion de la UMA MAT2016-77648R
The Agrobacterium T-DNA oncogene 6b induces tumors and modifies the growth of transgenic plants b... more The Agrobacterium T-DNA oncogene 6b induces tumors and modifies the growth of transgenic plants by an unknown mechanism. We have investigated changes in roots of tobacco seedlings that express a dexamethasone-inducible T-6b (dex-T-6b) gene. On induction medium with sucrose, intact or isolated dex-T-6b roots accumulated sucrose, glucose, and fructose and changed their growth, contrary to noninduced roots. Root fragments bridging agar blocks with or without sucrose accumulated sugars at the site of sucrose uptake, resulting in local growth. Induced root fragments showed enhanced uptake of 14C-labeled sucrose, glucose, and fructose. When seedlings were placed on sucrose-free induction medium, sugar levels strongly decreased in roots and increased in cotyledons. Collectively, these results demonstrate that 6b stimulates sugar uptake and retention with drastic effects on growth. Apart from sugars, phenolic compounds also have been found to accumulate in 6b tissues and have been proposed ...
ABSTRACT a b s t r a c t Two new cobalt(II) phosphonate salts, {3[Co(H 2 O) 6 ] 2 (C 12 H 18 O 9 ... more ABSTRACT a b s t r a c t Two new cobalt(II) phosphonate salts, {3[Co(H 2 O) 6 ] 2 (C 12 H 18 O 9 P 3)}Á11H 2 O (1) and {[Co(H 2 O) 6 ](C 12 H 19 O 9-P 3)}Á6H 2 O (2), were obtained in crystalline form. Compound 1 crystallises in the centrosymmetric space group of the triclinic system, whereas compound 2 crystallises in the P2 1 /n space group of the monoclinic system. The asymmetric unit of 1 consists of one and a half hexaaqua cobalt(II) ions, one phosphonic acid residue and five and a half lattice water molecules. One Co 2+ ion lies in a special position and the other one in a general position. In 1, both independent Co 2+ cations are surrounded by water molecules forming distorted octahedral coordination geometry. The asymmetric unit of 2 consists of one hexaaqua cobalt(II) ion, phosphonic acid residue and six lattice water molecules. In crystal 2, similarly as in crystal 1, the environment of the Co 2+ consists of water molecules that form distorted octahedral coordination geometry. The hexaaqua cobalt(II) cations interact with phosphonate counter ions and together with the solvated water molecules they form a three-dimensional hydrogen bonding supramolecular network. Magnetic susceptibility measurements exhibit paramagnetic behaviour with very weak antiferromag-netic interactions for both compounds.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
Phosphorus, Sulfur, and Silicon and the Related Elements, 1999
Abstract As part of our studies on the design, synthesis and evaluation of inhibitors of phenylal... more Abstract As part of our studies on the design, synthesis and evaluation of inhibitors of phenylalanine ammonialyase [1–3], we hive investigated the preparation of (±)-1- aminoindan-1-phosphonic acid, a struaural isomer of the strongest in vivo inhibitor [2]. After out unsuccesful amidophosphonylation of l-indanone, we turned our attention to hydrophosphonylrtion of N-(l'-indanylidenc)dipbenylmethylamine obtained from l-indanone and diphenylmethylamine, according to the known procedure for aldehydes [4, 51. Diethyl ± l-(diphenylmethylamino)indan-l-phosphonate has been obtained as shown on the scheme reaction.
ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was e... more ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.
Universidad de Malaga. Campus de Excelencia Internacional Andalucia Tech. Plan Propio de Investig... more Universidad de Malaga. Campus de Excelencia Internacional Andalucia Tech. Plan Propio de Investigacion de la UMA MAT2016-77648R
The Agrobacterium T-DNA oncogene 6b induces tumors and modifies the growth of transgenic plants b... more The Agrobacterium T-DNA oncogene 6b induces tumors and modifies the growth of transgenic plants by an unknown mechanism. We have investigated changes in roots of tobacco seedlings that express a dexamethasone-inducible T-6b (dex-T-6b) gene. On induction medium with sucrose, intact or isolated dex-T-6b roots accumulated sucrose, glucose, and fructose and changed their growth, contrary to noninduced roots. Root fragments bridging agar blocks with or without sucrose accumulated sugars at the site of sucrose uptake, resulting in local growth. Induced root fragments showed enhanced uptake of 14C-labeled sucrose, glucose, and fructose. When seedlings were placed on sucrose-free induction medium, sugar levels strongly decreased in roots and increased in cotyledons. Collectively, these results demonstrate that 6b stimulates sugar uptake and retention with drastic effects on growth. Apart from sugars, phenolic compounds also have been found to accumulate in 6b tissues and have been proposed ...
ABSTRACT a b s t r a c t Two new cobalt(II) phosphonate salts, {3[Co(H 2 O) 6 ] 2 (C 12 H 18 O 9 ... more ABSTRACT a b s t r a c t Two new cobalt(II) phosphonate salts, {3[Co(H 2 O) 6 ] 2 (C 12 H 18 O 9 P 3)}Á11H 2 O (1) and {[Co(H 2 O) 6 ](C 12 H 19 O 9-P 3)}Á6H 2 O (2), were obtained in crystalline form. Compound 1 crystallises in the centrosymmetric space group of the triclinic system, whereas compound 2 crystallises in the P2 1 /n space group of the monoclinic system. The asymmetric unit of 1 consists of one and a half hexaaqua cobalt(II) ions, one phosphonic acid residue and five and a half lattice water molecules. One Co 2+ ion lies in a special position and the other one in a general position. In 1, both independent Co 2+ cations are surrounded by water molecules forming distorted octahedral coordination geometry. The asymmetric unit of 2 consists of one hexaaqua cobalt(II) ion, phosphonic acid residue and six lattice water molecules. In crystal 2, similarly as in crystal 1, the environment of the Co 2+ consists of water molecules that form distorted octahedral coordination geometry. The hexaaqua cobalt(II) cations interact with phosphonate counter ions and together with the solvated water molecules they form a three-dimensional hydrogen bonding supramolecular network. Magnetic susceptibility measurements exhibit paramagnetic behaviour with very weak antiferromag-netic interactions for both compounds.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
An entry from the Cambridge Structural Database, the world's repository for small molecule cr... more An entry from the Cambridge Structural Database, the world's repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space group, experimental conditions and quality measures.
Phosphorus, Sulfur, and Silicon and the Related Elements, 1999
Abstract As part of our studies on the design, synthesis and evaluation of inhibitors of phenylal... more Abstract As part of our studies on the design, synthesis and evaluation of inhibitors of phenylalanine ammonialyase [1–3], we hive investigated the preparation of (±)-1- aminoindan-1-phosphonic acid, a struaural isomer of the strongest in vivo inhibitor [2]. After out unsuccesful amidophosphonylation of l-indanone, we turned our attention to hydrophosphonylrtion of N-(l'-indanylidenc)dipbenylmethylamine obtained from l-indanone and diphenylmethylamine, according to the known procedure for aldehydes [4, 51. Diethyl ± l-(diphenylmethylamino)indan-l-phosphonate has been obtained as shown on the scheme reaction.
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