β-Amino Acid and Amino-Alcohol Conjugation of a Nonsteroidal Anti-Inflammatory Drug (NSAID) Imparts Hydrogelation Displaying Remarkable Biostability, Biocompatibility, and Anti-Inflammatory Properties
摘要:
A well-known nonsteroidal anti-inflammatory drug (NSAID), namely, naproxen (Np), was conjugated with beta-alanine and various combinations of amino alcohols and L-alanine. Quite a few bioconjugates, thus synthesized, were capable of gelling pure water, NaCl solution (0.9 wt %), and phosphate-buffered saline (PBS) (pH 7.4). The hydrogels were characterized by rheology and electron microscopy. Hydrogelation was probed by FT-IR and temperature-variable H-1 NMR studies. Single-crystal X-ray diffraction (SXRD) of a nonhydrogelator and a hydrogelator in the series established a useful structure-property (gelation) correlation. MTT assay of the hydrogelators in the mouse macrophage RAW 264.7 cell line showed excellent biocompatibility. The prostaglandin E-2 (PGE(2)) assay of the hydrogelators revealed their anti-inflammatory response, which was comparable to that of the parent NSAID naproxen sodium (Ns).
β-Amino Acid and Amino-Alcohol Conjugation of a Nonsteroidal Anti-Inflammatory Drug (NSAID) Imparts Hydrogelation Displaying Remarkable Biostability, Biocompatibility, and Anti-Inflammatory Properties
摘要:
A well-known nonsteroidal anti-inflammatory drug (NSAID), namely, naproxen (Np), was conjugated with beta-alanine and various combinations of amino alcohols and L-alanine. Quite a few bioconjugates, thus synthesized, were capable of gelling pure water, NaCl solution (0.9 wt %), and phosphate-buffered saline (PBS) (pH 7.4). The hydrogels were characterized by rheology and electron microscopy. Hydrogelation was probed by FT-IR and temperature-variable H-1 NMR studies. Single-crystal X-ray diffraction (SXRD) of a nonhydrogelator and a hydrogelator in the series established a useful structure-property (gelation) correlation. MTT assay of the hydrogelators in the mouse macrophage RAW 264.7 cell line showed excellent biocompatibility. The prostaglandin E-2 (PGE(2)) assay of the hydrogelators revealed their anti-inflammatory response, which was comparable to that of the parent NSAID naproxen sodium (Ns).
Microwave assisted synthesis and QSAR study of novel NSAID acetaminophen conjugates with amino acid linkers
作者:Anand D. Tiwari、Siva S. Panda、Adel S. Girgis、Sandhyamayee Sahu、Riham F. George、Aladdin M. Srour、Brian La Starza、Abdullah M. Asiri、C. Dennis Hall、Alan R. Katritzky
DOI:10.1039/c4ob01281j
日期:——
Novel, non-steroidal anti-inflammatory drug (NSAID), acetaminophen conjugates 6a–l with amino acid linkers were synthesized utilizing benzotriazole chemistry. Biological data acquired for all the novel bis-conjugates showed (a) some bis-conjugates (6d, 6e, 6h, and 6k) exhibit more potent anti-inflammatory activity than their parent drugs, (b) the potent bis-conjugates show no visible stomach lesions
Selective syntheses of S-acyl glutathiones are achieved in 79-98% yields using 1-acyl-1H-benzotriazoles in the presence of potassium bicarbonate in aqueous methanol at 20 ËC. N-Acylation of S-(p-nitrobenzoyl) glutathione with 1-acyl-1H-benzotriazoles followed by deprotection of the p-nitrobenzoyl groups under mild conditions gave 63-78% yields of N-acyl glutathiones. These methodologies should be useful for the S-acylation and N-acylation of peptides and glycopeptides.
Benzotriazole-mediated syntheses of novel bioconjugates of nonsteroidal anti-inflammatory drugs with carnosine and with amino acids were prepared in yields of 50-97% as potential drug candidates.
β-Amino Acid and Amino-Alcohol Conjugation of a Nonsteroidal Anti-Inflammatory Drug (NSAID) Imparts Hydrogelation Displaying Remarkable Biostability, Biocompatibility, and Anti-Inflammatory Properties
A well-known nonsteroidal anti-inflammatory drug (NSAID), namely, naproxen (Np), was conjugated with beta-alanine and various combinations of amino alcohols and L-alanine. Quite a few bioconjugates, thus synthesized, were capable of gelling pure water, NaCl solution (0.9 wt %), and phosphate-buffered saline (PBS) (pH 7.4). The hydrogels were characterized by rheology and electron microscopy. Hydrogelation was probed by FT-IR and temperature-variable H-1 NMR studies. Single-crystal X-ray diffraction (SXRD) of a nonhydrogelator and a hydrogelator in the series established a useful structure-property (gelation) correlation. MTT assay of the hydrogelators in the mouse macrophage RAW 264.7 cell line showed excellent biocompatibility. The prostaglandin E-2 (PGE(2)) assay of the hydrogelators revealed their anti-inflammatory response, which was comparable to that of the parent NSAID naproxen sodium (Ns).