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Showing posts from March, 2015

Design and Synthesis of (E)-4-(2-Phenyl-2H-chromen-3-yl)but-3-en-2-ones and Evaluation of their In Vitro Antimicrobial Activity

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Letters in Organic Chemistry, 2015, 12, 1-7 Design and   Synthesis   of   ( E )-4-(2-Phenyl-2 H -chromen-3-yl)but-3-en-2-ones and Evaluation of their In Vitro Antimicrobial Activity Sabita Nayak 1,* , Subhendu Chakroborty 1 , Sujitlal Bhakta 1 , Pravati Panda 1 , Seetaram Mohapatra 1 , Sanjeet Kumar 2 , Padan Kumar Jena 2   and Chandrasekhar Purohit 3 1 Department of Chemistry and 2 Department of Botany, Ravenshaw University, Cuttack, Odisha, India; 3 National Insti- tute of Science Education and Research, Bhubaneswar, Odisha, India Received January 23, 2015: Revised March 10, 2015: Accepted March 25, 2015 Abstract: 2 H -Chromene and its derivatives are an important class of organic compounds due to their wide range of bio- logical activities such as antimicrobial, antiviral, antiimflamatory and antitubercular agents. In the present work we have synthesized ten ne

Grey Wagtail (Motacilla cinerea): a avifauna play an vital role to maintain the ecology

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The grey wagtail ( Motacilla cinerea ) is a small member of the wagtail family, Motacillidae . The species looks similar to the yellow wagtail but has the yellow on its underside restricted to the throat and vent . Breeding males have a black throat. The species is widely distributed, with several populations breeding in Europe and Asia and migrating to tropical regions in Asia and Africa. They are usually seen on open marshy ground or meadows where they walk solitarily or in pairs along the ground, capturing insects that are disturbed. Like other wagtails, they frequently wag their tail and fly low with undulations and they have a sharp call that is often given in flight. This species was first described by   Marmaduke Tunstall in his 1771 Ornithologia Britannica This slim wagtail has a narrow white supercilium and a broken eye ring. The upperparts are grey and the yellow vent contrasting with whitish underparts makes it distinctive. The breeding male has a black throat that i