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Reddy, Vajrala Venkata; Naga, Mandava Venkata; Rao, Brahmeswara; Ganesh, Varanasi; Kumar, Adla Vijaya; Praveen, Cherukupally; Mukkanti, Khagga; Reddy, Ganta Mahesh; Reddy, Ganta Madhusudhan Letters in Organic Chemistry, 2010 , vol. 7, # 2 p. 149 - 154