Results 131 to 140 of about 4,811 (177)

Facile Synthesis of 8-Azido-6-Benzylaminopurine

Nucleosides, Nucleotides and Nucleic Acids, 2011
Bromination of 6-benzylaminopurine (1) with Br(2) in AcOH in the presence of AcONa afforded 6-benzylamino-8-bromopurine (2) in 59% yield. The position of bromination was confirmed by direct transformation of bromide 2 by reaction with NaN(3) in dimethyl sulfoxide to 8-azido-6-benzylaminopurine (3) in a yield of 70% and comparison of its properties with
Georgy Romanov, Sergey Mikhailov
exaly   +3 more sources

Enzymic glucosylation of the cytokinin, 6-benzylaminopurine

Plant Science Letters, 1979
Abstract Two separate enzyme activities for the formation of the 7- and 9-glucopyranosyl derivatives of the cytokinin 6-benzylaminopurine (BAP), have been found in soluble extracts of expanded cotyledons of radish ( Raphanus sativus ). The enzymes have been purified partially by column chromatography on DEAE-cellulose.
D S Letham
exaly   +2 more sources

6-benzylaminopurine and its glycosides as naturally occurring cytokinins

Plant Science, 1989
Abstract Primary crown gall tumours induced on stems on tomato plants by Agrobacterium tumefaciens yielded extracts with pronounced cytokinin activity. By mass spectrometry and other methods, 6-benzylaminopurine and its 9-β-ribofuranoside were identified as cytokinins in the extracts which also contained a 9-hexoside of 6-benzylaminopurine.
D S Letham
exaly   +2 more sources

6-Benzylaminopurine improves the quality of harvested litchi fruit

Postharvest Biology and Technology, 2018
Abstract 6-Benzylaminopurine (BAP), a synthetic cytokinin, can elicit plant growth and development by stimulating cell division. In this study, the effects of BAP on decay and pericarp browning of harvested litchi fruit in relation to phenolics and ROS metabolism were investigated.
Zhengke Zhang, Yueming Jiang, Xuewu Duan   +2 more
exaly   +2 more sources

Determination of the first dissociation constant of 6-benzylaminopurine

Analytica Chimica Acta, 2000
Petr Bednar, Petr Tarkowski, Petr Barták   +2 more
exaly   +2 more sources

Cytotoxicity reduction by O-nicotinoylation of antiviral 6-benzylaminopurine ribonucleosides

Toxicology in Vitro, 2022
One of the promising approaches in the development of nucleoside prodrugs is to use the nucleoside analogs containing lipophilic biodegradable residues, which are cleaved to biologically active forms after metabolic transformations in the cell. The introduction of such fragments makes it possible to reduce the general toxicity of the drug candidate and
Anastasia A, Zenchenko, Vladimir E, Oslovsky, Irina V, Varizhuk, Evgenia V, Karpova, Dmitry I, Osolodkin, Liubov I, Kozlovskaya, Aydar A, Ishmukhametov, Mikhail S, Drenichev   +7 more
openaire   +2 more sources

Thermochemistry of copper complex of 6-benzylaminopurine

Journal of Thermal Analysis and Calorimetry, 2008
The copper(II) complex of 6-benzylaminopurine (6-BAP) has been prepared with dihydrated cupric chloride and 6-benzylaminopurine. Infrared spectrum and thermal stabilities of the solid complex have been discussed. The constant-volume combustion energy, ΔcU, has been determined as −12566.92±6.44 kJ mol−1 by a precise rotating-bomb calorimeter at 298.15 K.
Y. Xu-Wu, Z. Hang-Guo, S. Wu-Juan, W. Xiao-Yan, G. Sheng-Li   +4 more
openaire   +1 more source

Uptake and metabolism of 6‐benzylaminopurine in shoot cultures of

Physiologia Plantarum, 1991
Shoots of Gerbera jamesonii Bolus, cultured in vitro were induced to multiply by the addition of 2.22 μM 6‐benzylaminopurine (BAP) to the medium. Shoots growing in the presence of [14C]‐BAP were harvested every 4 days and sub‐divided into petioles plus apices, laminae and basal callus.
D. Blakesley, J. R. Lenton, R. Horgan
openaire   +1 more source

Synthesis of raphanatin and its 6-benzylaminopurine analogue

Journal of the Chemical Society, Chemical Communications, 1975
The complete structures of raphanatin, the stable zeatin metabolite isolated from de-rooted radish seedlings, and the analogous 6-benzylaminopurine metabolite from the same plant system, have been confirmed by synthesis to be the 7-β-D-glucopyranosides of zeatin and 6-BAP respectively.
Colin C. Duke, Andris J. Liepa, John K. MacLeod, David S. Letham, Charles W. Parker   +4 more
openaire   +1 more source

Synthesis of 2-fluoro-6-benzylaminopurine and other purine derivatives

Archives of Biochemistry and Biophysics, 1961
Abstract The effects of a 2-fluoro substituent and of the replacement of the imidazole ring by a triazole ring upon the biological activities of a 6-(substituted)purine were determined. The 2-fluoro and 2-amino-8-aza analogs of 6-benzylaminopurine were synthesized, and the 2-fluoro but not the 2-amino-8-aza derivative was found to replace kinetin in ...
E O, LEONARD, C G, SKINNER, W, SHIVE
openaire   +2 more sources