- 1-(d-Glucopyranosyl-2′-deoxy-2′-iminomethyl)-2-hydroxynaphth alene as chemo-sensor for Fe3+ in aqueous HEPES buffer based on colour changes observable with the naked eye
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A new glucose-based C2-derivatized colorimetric chemo-sensor (L1) has been synthesized by a one-step condensation of glucosamine and 2-hydroxy-1-naphthaldehyde for the recognition of transition metal ions. Among the eleven metal ions studied, v
- Mitra, Atanu,Ramanujam, Balaji,Rao, Chebrolu P.
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- 1-(d-Glucopyranosyl-2′-deoxy-2′-iminomethyl)-2-hydroxybenzene as chemosensor for aromatic amino acids by switch-on fluorescence
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A glucose based C2-glyco-conjugate, that is, 1-(d-glucopyranosyl-2′-deoxy-2′-iminomethyl)-2-hydroxybenzene (L), has been synthesized in a high yield and characterized. Titration of L with all the 20 naturally occurring amino acids resulted in a large fluo
- Mitra, Atanu,Chinta, Jugun Prakash,Rao, Chebrolu P.
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Read Online
- Synthesis and antimicrobial activity of novel 3-benzyloxy-4-substituted-2- azetidinones: Formation of a hydrophobic layer via a self-organization effect
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We report the synthesis of new persulfide-spacer N-substituted-2- azetidinone-D-glucosamine in an attempt to potentially provide new antibiotics. The Schiff base ligands considered for this study were derived from D-glucosamine and 2-hydroxybenzaldehyde, 4-methoxy-benzaldehyde, cinnamaldehyde, 4-chlorobenzaldehyde, and 4-hydroxy-3-methoxy-benzaldehyde. Staudinger [2+2] cycloaddition of benzyloxyacetyl chloride to the newly reported per-O-allyl-N-substituted benzylidene-2-deoxy - D-glucosamine provided the sugar-based monocyclic -lactams in moderate yields. Radical addition of 2-mercaptoethanol catalyzed by azobisisobutyronitrile to the per-O-allyl-N-substituted-2-azetidinone-D-glucosamine led to the corresponding persulfide-spacers in good yields. All new compounds were characterized by spectroscopic and spectrometric methods. The scanning electron microscopy image of 1,3,4,6-tetra-O-[3-(hydroxythioethyl)-propyl]-2-deoxy-2-N-[(3-benzyloxy-4-(4- chloropenyl)-2-azetidinone] - D-glucopyranoside, as a representative example, demonstrated a super hydrophobic layer formed via highly organized thioether spacers on gold as the adsorbate system through the formation of sulfur-gold bonds. The reported glucosides showed a moderate antifungal activity against Candida albicans while being slightly to moderately active against gram-positive and gram-negative bacteria used in this investigation at a concentration of 1 mg/mL dissolved in dimethyl sulfoxide. Supplemental materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfur, and Silicon and the Related Elements to view the free supplemental file. Taylor & Francis Group, LLC.
- Hassan, Hammed H. A. M.,Soliman, Raafat
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experimental part
p. 1932 - 1947
(2011/10/09)
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- Synthesis of new optically active D-glucosamine-pyrrole derivatives
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From D-glucosamine hydrochloride was synthesized, for the first time, three new optically active derivatives of D-glucosamine-pyrrole with the pyrrole group unsubstituted in the 2- and 5-positions. New N-benzylpyrrole-D-glucosamine derivatives were also prepared from the same substrate. Georg Thieme Verlag Stuttgart.
- Frontana-Uribe, Bernardo A.,Escarcega-Bobadilla, Martha V.,Juarez-Lagunas, Jorge,Toscano, Ruben A.,De La Mora, Gustavo A. Garcia,Salmon, Manuel
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scheme or table
p. 980 - 984
(2009/12/04)
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- Molybdenum(VI) cis-dioxo complexes bearing sugar derived chiral Schiff-base ligands: Synthesis, characterization, and catalytic applications
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Molybdenum(VI)-cis-dioxo complexes bearing sugar derived chiral Schiff-base ligands of general formula MoO2(L)(Solv) have been synthesized (with L = N-salicylidene-D-glucosamine; N-salicylidene-1,3,4,6-tetraacetyl-α-D-glucosamine; N-5-chlorosal
- Zhao, Jin,Zhou, Xiangge,Santos, Ana M.,Herdtweck, Eberhardt,Romao, Carlos C.,Kuehn, Fritz E.
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p. 3736 - 3742
(2007/10/03)
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