scholarly journals Effect of 2-[3-(trifluoromethyl)phenyl]-4H-furo[3,2-b]pyrrole-5-carboxhydrazides on photosynthetic processes

2022 ◽  
Vol 7 (1) ◽  
pp. 115-121
Author(s):  
Katarína Kráľová ◽  
Renata Gašparová ◽  
Martin Moncman
Keyword(s):  
Electron Transport ◽  
Microwave Irradiation ◽  
Chlorophyll Content ◽  
Chlorella Vulgaris ◽  
Room Temperature ◽  
Photosynthetic Electron Transport ◽  
Spinach Chloroplasts ◽  
Toluenesulfonic Acid ◽  
Heterocyclic Aldehydes

A new series of carboxhydrazides 6-8 was synthesized under microwave irradiation by reaction of carboxhydrazide 1 with heterocyclic aldehydes 2-4 in the presence of p-toluenesulfonic acid in ethanol. N-Benzoylcarboxhydrazide 9 was prepared by reaction of 1 with benzoylchlorid 5 in THF at room temperature. The effects of 6-9 on inhibition of photosynthetic electron transport in spinach chloroplasts and chlorophyll content in the antialgal suspensions of Chlorella vulgaris were investigated.

scholarly journals Reactions of substituted furo[3,2-b]pyrrole-5-carboxhydrazides and their biological activity

2005 ◽  
Vol 3 (4) ◽  
pp. 622-646 ◽  
Author(s):  
Renata Ga<parová ◽  
Daniel Zbojek ◽  
Margita Lácová ◽  
Katarína Král'ová ◽  
Anton Gatial ◽  
...  
Keyword(s):  
Biological Activity ◽  
Reaction Time ◽  
Electron Transport ◽  
Microwave Irradiation ◽  
Chlorophyll Content ◽  
Chlorella Vulgaris ◽  
Photosynthetic Electron Transport ◽  
Imidazole Derivatives ◽  
Spinach Chloroplasts

AbstractThe reactions of substituted furo[3,2-b]pyrrole-5-carboxhydrazides 1 with 5-arylfuran-2-carboxaldehydes 2, 4,5-disubstituted furan-2-carboxaldehydes 3 and thiophene-2-carboxaldehyde 4 has been studied. The advantage of microwave irradiation on some of these reactions was reflected in the reduced reaction time and increased yields. Reactions of 1 with 4-substituted 1,3-oxazol-5(4H)-ones 11 led to diacylhydrazines 13 or to imidazole derivatives 14 depending on the temperature. 1,2,4-Triazole-3-thione 17 was synthesized by two-step reaction of 1 with phenylisothiocyanate and subsequent base-catalyzed cyclization of thiosemicarbazide 16. The effects of hydrazones 5–10 on inhibition of photosynthetic electron transport in spinach chloroplasts and chlorophyll content in the antialgal suspensions of Chlorella vulgaris were investigated.

Characteristics of Cu deficiency-induced inhibition of photosynthetic electron transport in spinach chloroplasts

1987 ◽  
Vol 891 (1) ◽  
pp. 75-84 ◽  
Author(s):  
Magdolna Droppa ◽  
Jiři Masojidek ◽  
Zsuzsanna Rózsa ◽  
Adam Wolak ◽  
LászlóI. Horváth ◽  
...  
Keyword(s):  
Electron Transport ◽  
Photosynthetic Electron Transport ◽  
Spinach Chloroplasts ◽  
Cu Deficiency

Mode of Inhibition of Photosynthetic Electron Transport by Substituted Diphenylethers

1981 ◽  
Vol 36 (9-10) ◽  
pp. 848-852 ◽  
Author(s):  
W. Draber ◽  
H. J. Knops ◽  
A. Trebst
Keyword(s):  
Electron Transport ◽  
Electron Flow ◽  
Photosynthetic Electron Transport ◽  
Thylakoid Membranes ◽  
Photosynthetic Electron Flow ◽  
Spinach Chloroplasts

Abstract Several substituted diphenylethers were found to be effective inhibitors of photosynthetic electron flow in isolated thylakoid membranes from spinach chloroplasts. T heir site of inhibition was localized with artificial acceptor and donor systems. The phenylether of an alkyl substituted nitrophenol is prim arely inhibiting electron flow after plastoquinone function whereas a dinitro-phenylether of a phenyl substituted nitrophenol is inhibiting before plastoquinone function. Therefore certain diphenylethers interfere with plastoquinone function at the oxidation or reduction site, depending on the substitution.

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