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Molbank
Volume 2016
Issue 1
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Molbank, Volume 2016, Issue 1 (March 2016) – 9 articles

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337 KiB  
Short Note
(S)-4-[(3aR,4S,7aR)-4-Methoxy-6-methyl-3-methylene-2-oxo-2,3,3a,4,7,7a-hexahydrobenzofuran-5-yl]pentyl Acetate
by Xin Guo, Jin-Ming Gao and Jiang-Jiang Tang
Molbank 2016, 2016(1), M890; https://doi.org/10.3390/M890 - 18 Mar 2016
Viewed by 3125
Abstract
A new etherified 1-O-acetylbritannilactone (ABL) analogue 2 was semi-synthesized by a mild etherification reaction. The structure of the newly synthesized analogue was identified by 1H-NMR, 13C-NMR and HR-ESI-MS analysis. 2 exhibited similar cytotoxicity against HCT116, SGC-7901 and HeLa human [...] Read more.
A new etherified 1-O-acetylbritannilactone (ABL) analogue 2 was semi-synthesized by a mild etherification reaction. The structure of the newly synthesized analogue was identified by 1H-NMR, 13C-NMR and HR-ESI-MS analysis. 2 exhibited similar cytotoxicity against HCT116, SGC-7901 and HeLa human cancer cell lines with ABL. Full article
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327 KiB  
Short Note
2,3-Dimethylbenzoxazolium Methosulfate
by Atanas Kurutos, Nikolai Gadjev, Tamara Šmidlehner, Stela Minkovska, Ivo Piantanida and Todor Deligeorgiev
Molbank 2016, 2016(1), M889; https://doi.org/10.3390/M889 - 5 Mar 2016
Cited by 3 | Viewed by 3430
Abstract
An economically benign solvent-free approach to synthesise 2,3-dimethylbenzoxazolium methosulfate is reported in the present work. The title compound is derived from 2-methylbenzoxazole reacting with a slight excess of dimethylsulfate, at room temperature. The reaction proceeds via an intrinsic exothermic reaction, and the benzoxazolium [...] Read more.
An economically benign solvent-free approach to synthesise 2,3-dimethylbenzoxazolium methosulfate is reported in the present work. The title compound is derived from 2-methylbenzoxazole reacting with a slight excess of dimethylsulfate, at room temperature. The reaction proceeds via an intrinsic exothermic reaction, and the benzoxazolium salt crystallized after a short time into a white crystalline form. The product was filtered off and washed with acetone and diethyl ether to provide the desired product in 89% yield. The target compound was evaluated by ESI/MS analysis. Full article
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346 KiB  
Short Note
1-Hydroxy-3-(3-methylbut-2-enyloxy)anthracene-9,10-dione
by Siti Nurbayti, Didin Mujahidin and Yana M. Syah
Molbank 2016, 2016(1), M888; https://doi.org/10.3390/M888 - 25 Feb 2016
Viewed by 3567
Abstract
An anthraquinone derivative, 1-hydroxy-3-(3-methylbut-2-enyloxy)anthracene-9,10-dione (4), has been synthesized in two steps from benzoic acid, 3,5-dihydroxybenzoic acid, and prenylbromide. Full article
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652 KiB  
Editorial
Acknowledgement to Reviewers of Molbank in 2015
by Molbank Editorial Office
Molbank 2016, 2016(1), M887; https://doi.org/10.3390/M887 - 25 Jan 2016
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Abstract
The editors of Molbank would like to express their sincere gratitude to the following reviewers for assessing manuscripts in 2015. [...] Full article
1014 KiB  
Short Note
Tris(3,7-dihydroxyflavonolate-κO3,O4)chromium(III) Complex
by Anamaria D. P. Alexiou, Denny D. E. Silva, Paulete Romoff and Marcelo J. P. Ferreira
Molbank 2016, 2016(1), M886; https://doi.org/10.3390/M886 - 22 Jan 2016
Cited by 3 | Viewed by 3405
Abstract
The complex [Cr(3,7diHF)3]·3H2O (3,7diHF is the monoanion of flavonoid 3,7-dihydroxyflavone) was synthetized and characterized by mass spectrometry, thermogravimetry, UV-Vis and FTIR spectroscopies. The data indicated that the coordination of the chromium(III) ion to the flavonoid increased its thermal stability. Full article
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364 KiB  
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9-(4-Methoxyquinazolin-2-yl)-9H-purin-6-amine
by Ioanna Vlachou, Eleni Kourtidou and Ioannis Papasotiriou
Molbank 2016, 2016(1), M885; https://doi.org/10.3390/M885 - 19 Jan 2016
Cited by 1 | Viewed by 3389
Abstract
A novel hybrid consisting of quinazoline and adenine moieties has been synthesized as a precursor of a potential biologically active target compound. The structure of 9-(4-methoxyquinazolin-2-yl)-9H-purin-6-amine (2) was characterized and confirmed using the following spectroscopic methods: LC-UV-MS, 1H-NMR, 13C-NMR and HSQC-NMR. Full article
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473 KiB  
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9-(4-Hydroxybutyl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione
by Camilo A. Navarro, Cesar Sierra and Cristian Ochoa-Puentes
Molbank 2016, 2016(1), M884; https://doi.org/10.3390/M884 - 12 Jan 2016
Cited by 1 | Viewed by 4186
Abstract
The title compound 9-(4-hydroxybutyl)-3,3,6,6-tetramethyl-3,4,5,6,7,9-hexahydro-1H-xanthene-1,8(2H)-dione was synthesized in 72% yield through a simple, convenient and environmentally friendly one-pot reaction between dimedone and 3,4-dihydro-2H-pyran in aqueous citric acid. Additionally, a plausible reaction mechanism for the formation of the target xanthene is proposed. Full article
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341 KiB  
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Methyl 3-(Quinolin-2-yl)indolizine-1-carboxylate
by Roumaissa Belguedj, Esma Lamera, Abdelmalek Bouraiou, Zouhair Bouaziz and Aissa Chibani
Molbank 2016, 2016(1), M883; https://doi.org/10.3390/M883 - 28 Dec 2015
Cited by 1 | Viewed by 3410
Abstract
A novel compound, methyl 3-(quinolin-2-yl)indolizine-1-carboxylate (2) has been synthesized by cycloaddition reaction of 1-(quinolin-2-ylmethyl)pyridinium ylide (1) with methyl propiolate in presence of sodium hydride in THF. The structure of this compound was established by IR, 1H-NMR, 13C-NMR and MS data Full article
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738 KiB  
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1,3-Bis(5′-methyl-4′-phenyl-2′-thiazolylimino)isoindoline
by Róbert Csonka, Miklós István Szávuly, Michel Giorgi, Gábor Speier and József Kaizer
Molbank 2016, 2016(1), M882; https://doi.org/10.3390/M882 - 23 Dec 2015
Viewed by 3541
Abstract
A new sterically hindered isoindoline-based 1,3-bis(5′-methyl-4′-phenyl-2′-thiazolylimino)isoindoline (1) was synthesized by fusion method with satisfyingly good yield. The structure of the newly synthesized compound was identified by FT-IR, UV-Vis, 1H-NMR, 13C-NMR and X-ray analysis. Full article
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