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Ogrel, A. M.; Ogrel, Svetlana; Швец, В. И.; Raap, J.

doi:10.1023/a:1008824410340

Cited by 3 publications

(5 citation statements)

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“…Earlier, they were synthesized on the basis of histidine, valine and phenylalanine [10]. The imidazolyl group of histidine, the 2-propyl group of valine, and the phenyl group of phenylalanine mimic, respectively, the 1,2,4-triazolyle, tertiary-butyl and 4-chlorophenyl fragments of 4,4-dimethyle-2-(1',2',4'-triazolyle-1')-1-(4"-chlorophenyl)-pentanol-3.…”

Section: Strategy Of Chemical Design Of Phytoregulators and Stressmentioning

confidence: 99%

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Strategy of chemical design of phytoregulators and stress protectors with the given properties

Gafurov

Zefirov

2004

Dokl Biol Sci

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Phytohormonal regulation of the growth and development of plants is chosen as a physiological model for developing the strategy of chemical design of effective phytoregulators and stress protectors. The strategy [1 − 3] is based on the following assumptions.(1) Several, rather than one, life-supporting systems participate in the formation of the response of living organisms to any external influence. Even weak but simultaneous stimulating influence on some systems, forming a given character can cause a strong responding effect.(2) It is necessary that these influences should be complementary and coordinated.(3) The physiological activity of a molecule is a result of the interaction of its effector chemical fragments with the receptors of those systems which form the given character (quality).(4) Physical and chemical properties of the effector fragments and the whole molecule (their topochemistry and molecular parameters, including the affinity for proton, water and lipids) do not determine the regulation influence qualitatively. Instead, they strengthen or weaken it quantitatively to the degree corresponding to the structural requirements of structure the receptors of regulatory systems.Auxins and gibberellins, as natural phytohormones, carry out complementary functions in two key processes in the life of a plant: (a) the germination of a seed and rooting of the sprout and (b) the formation and development of fruits and seeds [4,5]. During germination, auxins provide rhizogenesis and gibberellins, the growth of the above-ground part of a plant. Additional stimulation of sprout rooting by auxins accompanied by a slight inhibition of the development of the aboveground part would allow redistributing stocks of nutrients of a seed for the benefit of rhizogenesis, which, in turn, would increase the stability and efficiency of crops. The same auxins together with abscisins control the flow of plastic substances from the feeding flag leaf to the developing seeds and fruits during fructification. Shortage of auxin largely determines the heterogeneity of maturing fruit ripening and slows down their development. During fructification, the inhibition of an excessive growth of the above-ground part of a plant is useful for crop, because it allows redistributing mineral and water for fruit development. Hence, phytoregulators to be designed should have two complementary growth-regulation activities: auxin and antigibberellin (retardant).On the basis of the developed strategy, compounds I, II and III [6] were selected (Table 1). They combine chemical fragments with auxin (the O-benzyl fragment) and with retardant (the quaternary ammonium group) activities favors fast and effective rooting of sprouts developing from seeds subjected to preceding processing. This raises the efficiency of a plant and its stability to stresses and phytopathogens, whereas the radionuclide carry-over from the ground is decreased [7,8]. During the preharvest processing of a plant with solutions of salts I, II and III, developing fruits receive additio...

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Section: Strategy Of Chemical Design Of Phytoregulators and Stressmentioning

confidence: 99%

“…The growth-regulation activity (in percent of the control value) of peptide antigibberellin biomimetics that are derivatives of histidine with a common formula[10] …”

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confidence: 99%

Strategy of chemical design of phytoregulators and stress protectors with the given properties

Gafurov

Zefirov

2004

Dokl Biol Sci

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“…Oligomeric hydroxyl-containing diene rubbers form the base of casting composites widely used for laying waterproofing, sealing, anticorrosion, sports, and other elastomer coatings [1][2][3][4][5][6][7][8]. Their advantage over other types of composite is that they can be cured without being heated directly on the substrates by the known scheme of urethane formation by interaction with isocyanate curing agents introduced into the composite.…”

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confidence: 99%

“…The binders used in these composites are the homeproduced hydroxyl-containing oligomers SKDP-N (divinylpiperylene) [1,2] and PDI-1K (divinylisoprene) [3] and the butadiene oligomer Krasol LBH-3000 of foreign production [4-6].…”

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confidence: 99%

Polyurethane Elastomers Based on Oligobutadienediol with a 1,2-Structure of Double Bonds

Medvedev

Ukrainskaya

Chapurkin

et al. 2012

International Polymer Science and Technology

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“…Polymer composites based on oligomeric hydroxylcontaining rubbers are widely used for the laying of cast floors as sealing, anticorrosion, waterproofing, and other protective coatings. An advantage is their ability to be processed by free casting technology and to be cured without the application of heating or any other action directly under building site conditions [1][2][3][4][5].…”

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confidence: 99%