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Unformatted text preview: -25th June 2010 SYNTHESIS, CHARACTERIZATIONS, LIQUID CRYSTAL PROPERTIES OF SOME HETEROCYCLIC COMPOUNDS AbdulKarim-Talaq Mohammad, Hasnah Osman and Guan-Yeow Yeap School of Chemical Sciences, Universiti Sains Malaysia, 11800 Pulau Pinang, Malaysia E-mail: [email protected] The new method for the synthesis of 1,3-oxazepine and 1,3-oxazepane from readily available aldehyde and alkyl amine was developed using the Diels-Alder reaction. Their structures were elucidated by physical measurements and the structure determination on these compounds was performed in solid state by FT-IR spectroscopy based on vibrational analysis. Their molecular structures were further 1 13 1 13 ascertained through the H, C NMR spectra along with two-dimensional COSY, NOESY, H - C HMQC and HMBC spectra. The effect of different substituents on thermal and mesomorphic behavior has been investigated by differential scanning calorimetry and polarizing optical microscopy. All compounds possess relatively high phase transition temperatures. ORG-O6 MICROBIAL TRANSFORMATION AS A TOOL FOR GREEN CHEMISTRY REACT ION ON NATURAL COMPOUNDS Sadia S., Syed A. A. S., Nauman. S., Zaimi N and Weber J.F.F. Institute for the Study of Natural Remedies (iKUS), Faculty of Pharmacy, Universiti Teknologi MARA, Campus Puncak Alam, 42300 Puncak Alam, Selangor, Malaysia E-mail: [email protected] Green chemistry can be defined as the design of chemical products and processes that reduce or eliminate the use and generation of hazardous substances. In syntheses approach, biotransformation is widely applied to modified chemical compound to another compound for the syntheses of novel or improved drugs. Microbial Biotransformation is an effective tool for the structural modification of bioactive natural and syntheses compounds. Its application in asymmetric is increasing due to its versatility and ease. Biotransformation of mesterolone, norgestrel, carbamezapine, goniothalamin and balanolcarpol was studied by utilized various fungi from endophytes and ATCC culture as a syn...
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This note was uploaded on 02/17/2011 for the course CHEMISTRY 101 taught by Professor Csr during the Spring '11 term at University of Louisville.
- Spring '11