Organic chemistry
Alireza Banaei; Soheyla Karimi; Somayeh Minaei; Eslam Pourbasheer
Volume 5, Issue 1, pp. 1-120, Serial No. 14 , January 2017, , Pages 1-6
Abstract
In this paper, new (2E, 2'E)-3, 3'-(((3- hydroxypropane-1, 2-diyl) bis (oxy)) bis (2, 1-phenylene)) bis (1-phenylprop-2-en-1-one) (2a) was prepared in good yield by condensation reaction of acetophenone with bisaldehyde (1a) in ethanolic NaOH solutions at room temperature. The (2E, 2'E)-3, 3'-(((3- hydroxypropane-1, ...
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In this paper, new (2E, 2'E)-3, 3'-(((3- hydroxypropane-1, 2-diyl) bis (oxy)) bis (2, 1-phenylene)) bis (1-phenylprop-2-en-1-one) (2a) was prepared in good yield by condensation reaction of acetophenone with bisaldehyde (1a) in ethanolic NaOH solutions at room temperature. The (2E, 2'E)-3, 3'-(((3- hydroxypropane-1, 2-diyl) bis (oxy)) bis (2, 1-phenylene)) bis (1-phenylprop-2-en-1-one) (2a) was immediately reacted with phenyl hydrazine under refluxing conditions in the presence of potassium hydroxide to obtain the corresponding 2, 3-bis (2-(1, 3-diphenyl-4, 5-dihydro-1H-pyrazol-5-yl) phenoxy) propan-1-ol (3a). The newly synthesized compounds confirmed by melting point and TLC and their structure were established by various analytical techniques such as IR, 1H-NMR, 13C-NMR and elemental analysis.
Organic chemistry
Ali Saberi
Volume 4, Issue 2, pp. 133-235, Serial No. 11 , April 2016, , Pages 142-145
Abstract
γ-Aminobutiric acid (GABA), the major inhibitory neurotransmitter in the central nervous system is activated by the antispastic and muscle relaxant agent, Baclofen, which is a lipophilic derivative of GABA. Because of its biological and pharmacological importance, there are several reports in the ...
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γ-Aminobutiric acid (GABA), the major inhibitory neurotransmitter in the central nervous system is activated by the antispastic and muscle relaxant agent, Baclofen, which is a lipophilic derivative of GABA. Because of its biological and pharmacological importance, there are several reports in the literature about the synthesis of baclofen since 1962. In this study baclofen was easily synthesized by Claisen condensation of ethyl acetoacetate and p-chlorobenzaldehyde, formation of cyclic imide from β(p-chlorophenyl) glutaric acid and further Hoffmann rearrangement of β(p-chlorophenyl) glutarimid. Reagents used were inexpensive and commercially available. The overall yield of the reported strategy was 50% which is a good yield compare with other previous reports.
Organic chemistry
Kobra Nikoofar; Diba Kadivar; Samaneh Shirzadnia
Volume 2, Issue 4, pp. 236-325, Serial No. 5 , October 2014, , Pages 300-315
Abstract
Indole is a nitrogen-containing heterocycle. It is a very important motif in agriculture and pharmacy. Many compounds containing indole moiety has been isolated form nature. It is also an important part in natural alkaloids. Tryptophan is an amino acid which posses indole. 3-Sustituted indoles are the ...
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Indole is a nitrogen-containing heterocycle. It is a very important motif in agriculture and pharmacy. Many compounds containing indole moiety has been isolated form nature. It is also an important part in natural alkaloids. Tryptophan is an amino acid which posses indole. 3-Sustituted indoles are the main group of its derivatives. Because the wide-spread application of 3-substituted indolic compounds their synthetic procedures are in demand by organic chemists. In this review we have focused on about twenty compound of 3-substituted indole derivatives that showed pharmacological properties. A concise synthetic route for some of them has also been reported. The main pharmaceutical properties of these compounds are antibacterial, anticancer and antimicrobial activities.
Organic chemistry
Esmael Rostami; Maryam Bagherzadeh; Akram Khodadadi; Ay Soda Ghobadpoor; Fatemeh Dehghani; Zahra Heidari; Mahmood Feraidooni; Zahra Abshirini; Fatemeh Tavazo; Zahra Keshvarz
Volume 2, Issue 3, pp. 162-231, Serial No. 4 , July 2014, , Pages 187-195
Abstract
In this research work, we report the synthesis of macrocyclic diamides from the reaction of diesters and aliphatic diamines in the presence of caesium carbonate. It has been demonstrated that among the carbonate of alkali metals (Li2CO3, Na2CO3, K2CO3 and CS2CO3), CS2CO3 appear to be the best catalyst ...
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In this research work, we report the synthesis of macrocyclic diamides from the reaction of diesters and aliphatic diamines in the presence of caesium carbonate. It has been demonstrated that among the carbonate of alkali metals (Li2CO3, Na2CO3, K2CO3 and CS2CO3), CS2CO3 appear to be the best catalyst for macrocyclization. Diesters with different substitution patterns on the aromatic ring reacted smoothly with diamines under optimal conditions, affording the corresponding macrocycles in high yields. Introducing a rigid group (e.g., sulfone) on the substrate led to somewhat decreased yield. Various substrates proved to be suitable for this macrocyclization reaction, especially, the flexible ones.
Hojat Narimani; Mostafa kazemi; Homa Kohzadi
Volume 2, Issue 1, pp. 1-81, Serial No. 2 , January 2014, , Pages 48-55
Abstract
A general, simple, practical and convenient method has been described for the synthesis of anesthetic drug thiopental using thiourea in the presence of sodium ethoxide. Anesthetic drug of thiopental was prepared in two stages; during the first stage, the alkylation of mthyl cyanoacetate was performed ...
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A general, simple, practical and convenient method has been described for the synthesis of anesthetic drug thiopental using thiourea in the presence of sodium ethoxide. Anesthetic drug of thiopental was prepared in two stages; during the first stage, the alkylation of mthyl cyanoacetate was performed which was then to be followed by cyclization. Alkylation of methyl cyanoacetate which was performed by 2-iodopentane in the presence of sodium ethoxide reacts with thiourea and then the process was followed by thiopental prepration in excellent yield. Some important aspects of this methodology are the high reactivity of the substrates, avoidance of the use of hazardous solvents, simplicity of the product separation, low cost of the substrates and reagents and high yield of product. This is a applicable and efficient method for the preparation of thiopental anesthesia in high yield and in an appropriate time.