- Synthesis of new N-glycosides based on Valproic acid analogs tetrazole derivatives
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New N-glycosides based on valproic acid analogs tetrazole derivatives were synthesized. The bis-tetrazole derived from 1,6-hexandiol was also connected to acetylated glucose and formed bis-N-glycoside. Structures characterizations have been performed using FT IR, 1H and 13C NMR spectroscopy.
- Noroozi Pesyan, Nader,Ebrahimi, Marziyeh
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p. 1059 - 1067
(2017/03/11)
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- Synthesis of variously 9,9-dialkylated octahydropyrimido [3,4-a]-s-triazines with potential antifungal activity
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9,9-Dialkyloctahydropyrimido[3,4-a]-s-triazines were synthesized by iminodimethylation reaction between a 5,5-dialkyl-6-aminopyrimidine-2,4(3H,5H)-dione, a substituted aniline and two moles of formaldehyde. The synthesis of 5,5-dialkyl-6-aminopyrimidinedione consisted of the condensation of urea with ethyl 2,2-dialkylcyanoacetates. 18 Octahydropyrimido[3,4-a]-s-triazines were synthesized and compounds resulting from a supplementary aminomethylation were also obtained. Most of these compounds were tested for antifungal activity in vitro. Only 9,9-dibutyl-6,8-dioxo-3(2-chlorophenyl)2,3,4,5,6,7,8,9-octahydropyrimido[3, 4-a]-s-triazine showed some activity against Microsporum canis.
- Ghaib, Amar,Menager, Sabine,Verite, Philippe,Lafont, Olivier
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p. 109 - 116
(2007/10/03)
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- Synthesis and biological evaluation of cryptophycin analogs with substitution at C-6 (fragment C region)
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Analogs of the antitumor agents cryptophycins 1 and 8 with dialkyl substitution at C-6 (fragment C) were synthesized and evaluated for in vitro cytotoxicity against human leukemia cells (CCRF-CEM). The activity of these analogs decreased as the size of the substituents at C-6 increased. The C-6 spirocylopropyl compound (2g) was highly potent in vitro and showed excellent antitumor activity in animal models.
- Varie, David L.,Shih, Chuan,Hay, David A,Andis, Sherri L.,Corbett, Tom H.,Gossett, Lynn S.,Janisse, Samantha K.,Martinelli, Michael J.,Moher, Eric D.,Schultz, Richard M.,Toth, John E.
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p. 369 - 374
(2007/10/03)
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- Stereospecific and Stereoselective Reactions. V. Alkylation of Active Methylene Compounds by the Use of Alcohols, Diethyl Azodicarboxylate, and Triphenylphosphine
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The reagent formed by the reaction of diethyl azodicarboxylate (1) and triphenylphosphine (2) reacted with alcohols and ethyl cyanoacetate (6) to give alkylated products in 30 - 80percent yields.When ethyl acetoacetate, 1,3-1,3-coclopentanedione, or 1,3-cyclohexanedione was used in place of 6, the corresponding O-alkylated products were obtained.The reaction of either (S)-(-)-ethyl lactate or (S)-(-)-ethyl 2-hydroxy-3-phenylpropionate with 1, 2, and 6, followed by hydrolysis resulted in the formation of (S)-(-)-methylsuccinic acid or (S)-(-)-benzylsuccinic acid.The results indicate that nearly complete inversion of the configuration takes place in the alkylation step.
- Kurihara, Toshio,Sugizaki, Masaru,Kime, Itaru,Wada, Makoto,Mitsunobu, Oyo
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p. 2107 - 2112
(2007/10/02)
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