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Molbank
Volume 2006
Issue 6
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Molbank, Volume 2006, Issue 6 (December 2006) – 18 articles

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Research

80 KiB  
Short Note
4α,14α,Dimethyl-5α-cholest-8-en-3-one thiosemicarbazone
by Noureddine Mazoir, My Youssef Ait Itto, Matías Reina Artiles and Ahmed Benharref
Molbank 2006, 2006(6), M504; https://doi.org/10.3390/M504 - 01 Dec 2006
Cited by 1 | Viewed by 4309
Abstract
The compound 2 was prepared from equimolecular quantity of 1 (1g, 2.43 mmol), derivative triterpene resulting from Euphorbia officinarum1, and thiosemicarbazide2,3 dissolved in ethanol with several drops of conc. H2SO4.[...] Full article
72 KiB  
Short Note
4α,14α,Dimethyl-5α-cholest-8-en-3-one thiadiazoline
by Noureddine Mazoir, My Youssef Ait Itto, Essediya Lassaba and Ahmed Benharref
Molbank 2006, 2006(6), M505; https://doi.org/10.3390/M505 - 01 Dec 2006
Cited by 1 | Viewed by 3692
Abstract
The compound 2 (0.21g, 0.25mmol) was dissolved in 1ml of pyridine and 1ml of acetic anhydride1,2.[...] Full article
125 KiB  
Short Note
3β-Acetoxy-elemo-lanost-8-en-24-one
by Noureddine Mazoir, Mourad Daoubi, Essediya Lassaba and Ahmed Benharref
Molbank 2006, 2006(6), M506; https://doi.org/10.3390/M506 - 01 Dec 2006
Viewed by 3360
Abstract
The sodium periodate is prepared in situ with a equimolecular quantity of soda NaOH (0.5g; 12.50 mmol) and periodic acid H5IO6 (2.85g; 12.50 mmol), the mixture is stirred at 0°C. After 15 min, 5 ml of CCl4, 5 ml of [...] Read more.
The sodium periodate is prepared in situ with a equimolecular quantity of soda NaOH (0.5g; 12.50 mmol) and periodic acid H5IO6 (2.85g; 12.50 mmol), the mixture is stirred at 0°C. After 15 min, 5 ml of CCl4, 5 ml of H3CCN and 93.03mg (0.12mmol) of ruthenium trichloride1,2 were added.[...] Full article
82 KiB  
Short Note
3β-Tosyloxy-elemo-lanost-8-en-24-one
by Noureddine Mazoir, Mourad Daoubi, Essediya Lassaba and Ahmed Benharref
Molbank 2006, 2006(6), M507; https://doi.org/10.3390/M507 - 01 Dec 2006
Viewed by 3427
Abstract
The sodium periodate is prepared in situ with equimolecular quantity of soda NaOH (0.5g; 12.50 mmol) and periodic acid H5IO6 (2.85g; 12.50 mmol), the mixture is stirred at 0°C.[...] Full article
33 KiB  
Short Note
Synthesis of 2-(1,4-oxazino[2,3-b]quinoxalin-4-yl)ethanol
by Craig A. Obafemi, Wolfgang Pfleiderer and Festus Taiwo
Molbank 2006, 2006(6), M508; https://doi.org/10.3390/M508 - 01 Dec 2006
Cited by 1 | Viewed by 3141
Abstract
A mixture of 2,3-dichloroquinoxaline 1[1] (5.0 g, 25 mmol) and diethanolamine 2 (12 mL, 125 mmol) was heated to 130° C for 3 h, with magnetic stirring.[...] Full article
36 KiB  
Short Note
Synthesis of N, N-Dimethyl-3-phenoxyquinoxalin-2-amine
by Craig A. Obafemi and Wolfgang Pfleiderer
Molbank 2006, 2006(6), M509; https://doi.org/10.3390/M509 - 01 Dec 2006
Viewed by 2974
Abstract
The two chloro groups in 2,3-dichloroquinoxaline 1 can be displaced by nucleophiles, a process that may take place in a stepwise manner [1].[...] Full article
34 KiB  
Short Note
Synthesis of 2-Chloro-3-(2-naphthyloxy)quinoxaline
by Craig A. Obafemi and Wolfgang Pfleiderer
Molbank 2006, 2006(6), M510; https://doi.org/10.3390/M510 - 01 Dec 2006
Viewed by 2845
Abstract
A mixture of 2,3-dichloroquinoxaline 1 [1] (1.0 g, 5 mmol) and 2-naphthol (0.72 g, 5 mmol) in pyridine (10 mL) was heated to 130°C for 3 h, with magnetic stirring, to give a dark-brown reaction mixture.[...] Full article
36 KiB  
Short Note
4,4'-Diethylaminoethoxyhexestrol dihydrochloride
by Behrooz H. Yousefi and Ulrich Jordis
Molbank 2006, 2006(6), M511; https://doi.org/10.3390/M511 - 01 Dec 2006
Cited by 1 | Viewed by 3602
Abstract
The bis-diethylaminoethylether of hexestrol has been shown to be hypocholesteremic by inhibiting the reduction of desmosterol to cholesterol.[...] Full article
140 KiB  
Short Note
Spectroscopic and ab-initio study of schiff base ligand 4-[(2-hydroxyethylamino)-methylene]-5-methyl-2-p-tolyl-2,4-dihydro-pyrazol-3-one
by Kiran R. Surati, B. T. Thaker and Gavrang Shah
Molbank 2006, 2006(6), M512; https://doi.org/10.3390/M512 - 01 Dec 2006
Viewed by 3247
Abstract
Pyrazolone ring systems represent an important class of compounds [1] not only for their theoretical interest but also for their number of application in diverse area [2-6].[...] Full article
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Figure 1

136 KiB  
Short Note
Synthesis of 1-benzyl-3-chloro-4-(3,4,5-trimethoxyphenyl)azetidin-2-one
by Zhaoqi Yang and Pinhua Sun
Molbank 2006, 2006(6), M513; https://doi.org/10.3390/M513 - 01 Dec 2006
Viewed by 3014
Abstract
Combretastatin A-4, isolated from a South African tree Combretum caffrum, is one of the most potent anti-tomour agents. In this paper, an analogue of Combretastatin A-4 was synthesized in order to improve the anti-tumour activity. Compound was characterized by IR and 1HNMR. Full article
104 KiB  
Short Note
Compare of three ways of synthesis of simple Schiff base
by Zhaoqi Yang and Pinhua Sun
Molbank 2006, 2006(6), M514; https://doi.org/10.3390/M514 - 01 Dec 2006
Cited by 29 | Viewed by 9234
Abstract
In this paper we propose the synthesis of (E)-4-methyl-N-(3,4,5-trimethoxybenzylidene) benzenamine in different ways and compare of the way of synthesize it. As a result, microwave irradiation is the simple way to synthesis this Schiff base. Full article
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Scheme 1

118 KiB  
Short Note
Rhodamine B Pentyl Ester and its Methyl, Ethyl, Propyl, and Butyl Homologues
by Justin A. Ross, Benjamin P. Ross, Kelly L. Cosgrove, Halina Rubinsztein-Dunlop and Ross P. McGeary
Molbank 2006, 2006(6), M515; https://doi.org/10.3390/M515 - 01 Dec 2006
Cited by 4 | Viewed by 4565
Abstract
The rhodamines are a highly fluorescent class of compound used in many different fields of research, from the lasing medium in dye lasers to biological stains and markers for cellular drug resistance [1-3].[...] Full article
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Figure 1

40 KiB  
Short Note
Synthesis of 3-[(Z)-2-piperazin-1-yl-ethylimino]-1,3-dihydro indol-2-one as a novel Schiff base
by Ramakrishna Reddy K. and Mahendra K. N.
Molbank 2006, 2006(6), M516; https://doi.org/10.3390/M516 - 01 Dec 2006
Cited by 1 | Viewed by 3161
Abstract
Isatin (1H-indole-2,3-dione) was first obtained by Erdman and Laurent in 1841 as a product from the oxidation of indigo by nitric and chromic acids [1].[...] Full article
42 KiB  
Short Note
Synthesis of 3-[(Z)-5-Amino-1, 3, 3-trimethyl cyclohexyl methylimino]-1, 3-dihydroindol-2-one as a novel Schiff base
by Ramakrishna Reddy K. and Mahendra K. N.
Molbank 2006, 2006(6), M517; https://doi.org/10.3390/M517 - 01 Dec 2006
Cited by 1 | Viewed by 3242
Abstract
Isatin (1H-indole-2,3-dione) was first obtained by Erdman and Laurent in 1841 as a product from the oxidation of indigo by nitric and chromic acids [1].[...] Full article
83 KiB  
Short Note
Synthesis of 2-(2-napthylthio)-quinoline-3-carboxaldehyde as a novel complexing agent
by Bennehalli Basavaraju, Halehatti S. Bhojyanaik and C. Prabhakara
Molbank 2006, 2006(6), M518; https://doi.org/10.3390/M518 - 01 Dec 2006
Viewed by 3329
Abstract
In this paper we propose the synthesis of 2-(2-napthylthio)-quinoline-3-carboxaldehyde. In addition to its synthesis we present elemental, IR, and NMR spectral analysis to characterize the molecule. Full article
68 KiB  
Short Note
Synthesis and Protonation Constants of an Amide-Based Chelating Cyclophane
by Julio Cesar Altamirano-Coronado, Carolina Godoy-Alcántar and Felipe Medrano
Molbank 2006, 2006(6), M519; https://doi.org/10.3390/M519 - 01 Dec 2006
Viewed by 3218
Abstract
Our research group have reported that, under high dilution conditions, condensation reactions between 4,4’-ethylenebis(2,6-morpholinedione), 1, and aromatic diamines gave a new series of tetraaza chelating cylophanes, which have amide and aromatic groups in the ring framework and pendant carboxymethyl groups [1].[...] Full article
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Figure 1

90 KiB  
Short Note
Synthesis and Detailed Spectroscopic Characterization of Two Novel N-(3-Acetyl-2-thienyl)acetamides
by Gernot A. Eller and Wolfgang Holzer
Molbank 2006, 2006(6), M520; https://doi.org/10.3390/M520 - 01 Dec 2006
Viewed by 3167
Abstract
The title compounds – N-(3-acetyl-2-thienyl)-2-bromoacetamide and N-(3-acetyl-2-thienyl)-2- phthalimidoacetamide – were synthesized in one step from 3-acetylthiophen-2-amine and the corresponding acetyl halogenides. Detailed spectroscopic data (1H NMR, 13C NMR, 15N NMR, MS, IR) for these compounds are presented. Full article
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Scheme 1

179 KiB  
Short Note
The First Example of Oxidative Nucleophilic Substitution of Hydrogen in meso-Aryl Ring of the 5,10,15,20-Tetraphenylporphyrin Derivatives
by Agnieszka Mikus, Edyta Kisielińska and Stanisław Ostrowski
Molbank 2006, 2006(6), M521; https://doi.org/10.3390/M521 - 01 Dec 2006
Cited by 1 | Viewed by 3206
Abstract
A synthesis of [2-nitro-5-(10,15,20-triphenylporphyrin-5-yl)-phenyl]phenyl-acetonitrile zinc complex by the reaction of the respective nitroporphyrin with the anion of benzyl cyanide, followed by addition of DDQ, is described. This is the first example of this type of process in the nitrophenyl side ring of meso [...] Read more.
A synthesis of [2-nitro-5-(10,15,20-triphenylporphyrin-5-yl)-phenyl]phenyl-acetonitrile zinc complex by the reaction of the respective nitroporphyrin with the anion of benzyl cyanide, followed by addition of DDQ, is described. This is the first example of this type of process in the nitrophenyl side ring of meso-tetraarylporphyrin derivatives. Full article
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Scheme 1

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