Results 31 to 40 of about 6,596 (245)

Novel Steroidal 5α,8α-Endoperoxide Derivatives with Semicarbazone/Thiosemicarbazone Side-chain as Apoptotic Inducers through an Intrinsic Apoptosis Pathway: Design, Synthesis and Biological Studies

open access: yesMolecules, 2020
A series of novel steroidal 5α,8α-endoperoxide derivatives bearing semicarbazone (7a−g) or thiosemicarbazone (7h−k) side chain were designed, synthesized and evaluated for their cytotoxicities in four human cancer cell lines (HepG2,
Liwei Ma   +5 more
doaj   +1 more source

Functionalization of chitosan with 3,4-dihydroxybenzoic acid for the adsorption/collection of uranium in water samples and its determination by inductively coupled plasma-mass spectrometry [PDF]

open access: yes, 2007
A chitosan resin derivatized with 3,4-dihydroxybenzoic acid moiety (CCTS-DHBA resin) was newly synthesized for the collection/concentration of trace uranium by using cross-linked chitosan (CCTS) as base material, and the adsorption behavior of uranium as
Gao, Yun Hua   +6 more
core   +1 more source

(E)-1-(4-Fluorophenyl)ethan-1-one semicarbazone

open access: yesActa Crystallographica Section E, 2009
In the title compound, C9H10FN3O, the semicarbazone group is nearly planar, with the maximum deviation of 0.044 (1) Å for one of the N atoms. The mean plane of semicarbazone group forms a dihedral angle of 30.94 (4)&
Hoong-Kun Fun   +4 more
doaj   +1 more source

THE STRUCTURE OF 5-AMINO-4-METHYL-1-ISOQUINOLINECARBALDEHYDE THIOSEMICARBAZONE HYDROCHLORIDE, C12H14N5S+.CL- [PDF]

open access: yes, 1984
Mr=295.80 , P21/n , a=8.284(1), b= 13.906 (1), c= 12.040 (2) A, fl= 92.95 (1) °, V= 1385.0 (5) ,/k 3, Z = 4, D m = 1.42, D x = 1.418 Mg m -3, 2(Cu K~t) = 1.54178 A,, g = 3.8134 mm -~, F(000) = 616, R =0.061 for 628 unique significant reflections ...
KURODA, R, NEIDLE, S, WILMAN, D
core   +2 more sources

DFT (B3LYP) COMPUTATIONAL STUDY ON THE MECHANISMS OF FORMATION OF SOME SEMICARBAZONES [PDF]

open access: yesChemistry Journal of Moldova: General, Industrial and Ecological Chemistry, 2016
Thermodynamic and kinetic mechanisms of forming six semicarbazones have been investigated computationally by DFT B3LYP method. All the reactions proceed via two transitions and include two consecutive steps: bimolecular and unimolecular.
Abdulfatai Siaka   +3 more
doaj  

[(E)-(1-Phenylethylidene)amino]urea methanol monosolvate

open access: yesActa Crystallographica Section E, 2011
In the title compound, C9H11N3O·CH4O, the semicarbazone moiety is nearly planar [maximum deviation = 0.017 (2) Å] and is twisted by a dihedral angle of 29.40 (13)° with respect to the phenyl ring ...
Guang-Bin Liu   +4 more
doaj   +1 more source

Thiosemicarbazone organocatalysis:Tetrahydropyranylation and 2-deoxygalactosylation reactions and kinetics-based mechanistic investigation [PDF]

open access: yes, 2017
Thiosemicarbazones are introduced as a new class of highly tunable and efficient organocatalysts. We showcase this by studies of the tetrahydropyranylation reaction, where insights to the mechanism was achieved by a double Hammett analysis of both the ...
Akselsen, Olivia M.   +4 more
core   +2 more sources

Synthesis and Spectral Studies on Thorium (IV) Coordination Compounds of 4-[N-(2-Hydroxybenzalidene)amino] AntipyrineSmeicarbazone and 4-[N-Cinnamalidene) amino] ANtipyrine Semicarbazone [PDF]

open access: yesIranian Journal of Chemistry & Chemical Engineering, 2002
The stereochemistry of the actinide elements has recently undergone considerable development and a wide variety of coordination numbers and geometries have been observed.
Ram K. Agrawal   +2 more
doaj  

(E)-1-(4-Chlorophenyl)ethanone semicarbazone

open access: yesActa Crystallographica Section E, 2009
In the title compound, C9H10ClN3O, the semicarbazone group is approximately planar, with an r.m.s. deviation from the mean plane of 0.054 (1) Å.
Hoong-Kun Fun   +4 more
doaj   +1 more source

A preparation of phenylacetone. [PDF]

open access: yes, 1938
Thesis (M.A.)--Boston ...
Terry, Lewis Isaac
core   +1 more source

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