Publications by authors named "Ahmed L Zein"
Article Synopsis
- - New compounds called aroylhydrazones (4a-f) were created from an acid hydrazide (3) and different aldehydes or sugars.
- - These aroylhydrazones reacted with malononitrile to form 5-amino-4-cyano-1H-pyrazole derivatives (6a-f).
- - The new compounds were tested for their effectiveness against bacteria and fungi, showing moderate to high inhibition, with the best results from those containing both sugar and pyrazole structures.
Enantioselective total syntheses and X-ray structures of both (S)-tetrahydropalmatrubine (2) and (S)-corytenchine (3) are reported for the first time. They were both derived from (S)-N-norlaudanidine, a benzyltetrahydroisoquinoline that was synthesized with high (>95% ee) enantioselectivity using a chiral auxiliary-assisted Bischler-Napieralski cyclization/reduction approach.
View Article and Find Full Text PDF[2,2'-Imino-diethano-lato(2-)-κO,N,O'][4-(meth-oxy-carbonyl-meth-yl)phen-yl]boron.
Acta Crystallogr Sect E Struct Rep Online
September 2010
The title compound, C(13)H(18)BNO(4), was readily obtained from the reaction of methyl 4-boronobenzene acetate with ethano-lamine. A combination of inter-molecular N-H⋯O hydrogen bonds and C-H⋯π inter-actions leads to the pairwise association of mol-ecules.
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