October 2013
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98 Reads
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12 Citations
Bioorganic & Medicinal Chemistry
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October 2013
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98 Reads
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12 Citations
Bioorganic & Medicinal Chemistry
June 2010
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65 Reads
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24 Citations
Bioorganic & Medicinal Chemistry
Novel acrylic acid ethyl ester derivatives were synthesized and evaluated as potential agents against Mycobacterium species. A versatile and efficient copper-catalyzed coupling process was developed and used to prepare a library of substituted acrylic acid ethyl ester analogs. Minimum inhibitory concentration assays indicated that two of these compounds 3 and 4 have greater in vitro activity against Mycobacterium smegmatis than rifampin, one of the current, first-line anti-mycobacterial chemotherapeutic agents. Moreover, members of this new class of compounds appear to exhibit a specific anti-mycobacterial effect and do not inhibit the growth of the other Gram-positive or Gram-negative species tested.
October 2008
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112 Reads
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30 Citations
Bioorganic & Medicinal Chemistry Letters
An antimicrobial phenolic stilbene, (E)-3-hydroxy-5-methoxystilbene, 1 was recently isolated from the leaves of Comptonia peregrina (L.) Coulter and shown to possess inhibitory activity against several Gram-positive bacteria, including isolates of methicillin-resistant Staphylococcus aureus (MRSA), Mycobacterium bovis BCG, and avirulent Bacillusanthracis (Sterne strain), among others. These results prompted the design and synthesis of two new classes of compounds, phenoxystyrenes and phenothiostyrenes, as analogs of the natural antimicrobial stilbene. These and additional stilbenoid analogs were synthesized using new, efficient, copper-mediated coupling strategies. Minimum inhibitory concentration (MIC) antimicrobial assays were performed on all compounds prepared. These preliminary structure-activity relationship studies indicated that both new classes of synthetic analogs, as well as the stilbenes, show promising activity against Gram-positive bacteria when at least one phenolic moiety is present, but not when absent. The potencies of the phenolic phenoxystyrenes and phenothiostyrenes were found to be comparable to those of the phenolic stilbenes tested.
... Dalam pengembangan obat tidak hanya modifikasi molekul dan sintesis senyawa, tetapi perlu dilakukannya penelitian secara in vitro terhadap senyawa yang telah dimodifi kasi (7) . Untuk membuktikan bahwa tiga senyawa turunan isoniazid yang telah disintesis mempunyai aktivitas sebagai kandidat anti tuberkulosis, maka peneliti telah melakukan uji secara in vitro terhadap bakteri gram positif dan spesies mikrobakteri termasuk Mycobacterium tuberculosis (H 37 Rv). ...
October 2013
Bioorganic & Medicinal Chemistry
... Acrylic acids derivatives, in special cinnamic acid analogs, have a wide range of applications such as in cosmetics chemistry [1] , in medicinal chemistry: as potential new entities against schistosomiasis, tuberculosis, malaria, cancer, and others [2][3][4][5][6] , in polymer chemistry and food chemistry [7,8] . In spite of the great variety of protocols available for the synthesis of these substances [9][10][11][12] , the search for novel methodologies applicable to the multigram scale synthesis of acrylic acids is still an ongoing field. ...
June 2010
Bioorganic & Medicinal Chemistry
... Since new drugs are needed to treat S. aureus infections, our research group undertook a drug discovery project that screened methylene chloride extractions of native plants and fungi. A stilbene-based natural product was isolated from Comptonia peregrina (L.) Coulter with activity against S. aureus [7], which was followed by a structure-function analysis of hundreds of analogs that led to the discovery of the lead compound SK-03-92, an (E)-3-(2-(benzo[b]thiophen-2-yl)vinyl)-(5)-methoxyphenol. The SK-03-92 drug killed a number of S aureus strains including multidrug-resistant and methicillin-resistant S. aureus in less than 30 min [8]. ...
October 2008
Bioorganic & Medicinal Chemistry Letters