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p. 796-802
Received: 4 December 2000; in revised form: 12 September 2001 / Accepted: 12 September 2001 / Published: 30 September 2001
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| Download PDF Full-text (38 KB) Abstract: Full and unambiguous asssignment of all 1 H- and 13 C-NMR resonances of the free bases as well as the hydrochloride salts of the antiarrhythmic agent propafenone and a thiophene analogue in different solutions (DMSO-d 6 , CDCl3 ) is reported.
p. 803-814
Received: 1 April 2001; in revised form: 6 September 2001 / Accepted: 8 September 2001 / Published: 30 September 2001
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| Download PDF Full-text (110 KB) Abstract: The first total synthesis of Na -formyl-16α-hydroxyaspidospermidine and its isomer via (±)-vincadifformine is described and their structure elucidation using different methods of analysis is reported.
p. 815-824
Received: 8 February 2001; in revised form: 24 September 2001 / Accepted: 26 September 2001 / Published: 30 September 2001
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| Download PDF Full-text (93 KB) Abstract: A few 4-allyl/amino-5-aryl-1,2,4-triazoles were synthesized and tested for antibacterial and antifungal effects against Escherichia coli, Bacillus subtilis, Salmonella enteritidis, Staphylococcus aureus, Aspergillus niger and Candida albicans . 4-Allyl-5-aryl-1,2,4-triazoles were obtained by the oxidative cyclization of the appropriate 1-substituted-4-allylthiosemicarbazides and 4-amino-5-aryl-1,2,4-triazoles were obtained by cyclization of the potassium salts of appropriately substituted dithiocarbazinic acids with hydrazine hydrate. The new synthesized compounds were characterized using IR, 1 H- NMR, 13 C-NMR and UV spectral data together with elemental analysis.
p. 825-830
Received: 30 September 2001 / Accepted: 10 October 2001 / Published: 31 October 2001
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| Download PDF Full-text (30 KB) Abstract: A simple method for selective phosphorylation of ribityl containing starting materials to afford FMN derivatives is presented. The method is in particular valuable for the synthesis of labile FMN derivatives.
p. 831-844
Received: 7 September 2001 / Accepted: 10 October 2001 / Published: 31 October 2001
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| Download PDF Full-text (101 KB) Abstract: Metallophthalocyanine complexes are obtained quickly and efficiently by the reaction of phthalodinitrile with hydrated metallic salts without solvent and under microwave irradiation. The use of a modified commercial microwave oven to perform this type of reactions under dry conditions is described. Metallophthalocyanines and metallododecachlorophthalocyanines of some divalent metals can be also obtained from phthalic or tetrachlorophthalic anhydrides with hydrated metallic salt and urea under microwave irradiation and without solvent.
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