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Synthesis and Antiproliferative Potency within Anticonvulsant of Novel Bichalcone Derivatives
Mansour, Eman,El-Badry, Yaser A.,El-Tokhy, Afaf,Ayyad, Rezed,Abd-Rabou, Ahmed A. Korean Chemical Society 2020 대한화학회지 Vol.64 No.1
An efficient and facile procedure has been developed for the synthesis of novel bichalcone derivatives (4a, 4b). The key step contains the solvent-free aldol synthesis of bichalcones based on quinones. Bichalcones (4a, 4b) were used as precursors for the synthesis of some interesting heterocyclic compounds like, diazepines (5a, 5b), pyrazolo-pyrimidines (7a, 7b), and pyrazoline derivatives (8a, 8b). Moreover, new thioxopyrimidine derivatives (9a, 9b) were furnished and used as a functionalizing agent to produce the triazole-pyrimidines (11, 12) and the carbonitrile derivative (14). All the synthesized compounds were fully characterized using physical and spectral data like, FT-IR, <sup>1</sup>H NMR, <sup>13</sup>C NMR, and MS. Bichalcones (4a, 4b) and diazepines (5a, 5b) were screened for their anticonvulsant activity, where compounds (4a, 5a, and 5b) revealed potent anticonvulsant activity compared to diazepam. On the other hand, some of the prepared compounds were screened for their antiproliferative activity and they showed significant cytotoxic effects on most of the cancer cell lines with regard to broad spectrum antitumor activity.
Enhancing the Image Transmission over Wireless Networks through a Novel Interleaver
( M. A. M. El-bendary ),( A. E. Abou-el-azm ),( N. A. El-fishawy ),( F. Shawki ),( M. El-tokhy ),( F. E. Abd El-samie ),( H. B. Kazemian ) 한국인터넷정보학회 2011 KSII Transactions on Internet and Information Syst Vol.5 No.9
With increasing the using of wireless technologies in essential fields such as the medical application, this paper proposes different scenarios for the transmission of images over wireless networks. The paper uses the IEEE ZigBee 802.15.4 for applying the proposed schemes. It is a Wireless Personal Area Network (WPAN). This paper presents a novel chaotic interleaving scheme against error bursts. Also, the paper studies the proposed interleaver with the convolutional code with different constraint lengths (K). A comparison study between the standard scheme and proposed schemes for image transmission over a correlated fading channel is presented. The simulation results show the superiority of the proposed chaotic interleaving scheme over the traditional schemes. Also, the chaotic interleaver packet-by-packet basis gives a high quality image with (K=3) and reduces the need for the complex encoder with K=7.