http://nopr.niscair.res.in/handle/123456789/2466 Search the Channel search http://nopr.niscair.res.in/simple-search http://nopr.niscair.res.in/handle/123456789/2557 Title: BiCl₃ mediated synthesis of 4-chloro-5,6-dihydro-2H-pyran derivatives using microwave irradiation <br/> <br/>Authors: Thirupathaiah, A; Rao, G Venkateshwar <br/> <br/>Abstract: The reaction of aldehydes/ketones with homopropargylic alcohols in the presence of bismuth chloride generates the 4-chloro-5,6-dihydro-2H-pyran derivatives in excellent yield by employing microwave irradiation. <br/> <br/>Page(s): 1762-1765 http://nopr.niscair.res.in/handle/123456789/2556 Title: Synthesis of thiazines using an unusual means-sonication <br/> <br/>Authors: Dabholkar, Vijay V; Ansari, Faisal Y <br/> <br/>Abstract: A trouble free & swift method have been established for synthesis of thiazines from carbostyril CAB¹ and dimidone DIM² using sulphur powder and iodine as a catalyst in presence of THF solvent. The structures of the compounds have been elucidated on the basis of spectral analysis. <br/> <br/>Page(s): 1759-1761 http://nopr.niscair.res.in/handle/123456789/2555 Title: Synthesis of novel isoxazolyl 1,3,5-benzoxadiazocine-4-thiones as possible biodynamic agents <br/> <br/>Authors: Rajanarendar, E; Shaik, Firoz Pasha; Reddy, A Siva Rami <br/> <br/>Abstract: Synthesis of novel isoxazolyl 1,3,5-benzoxadiazocine-4-thiones 5 has been accomplished by condensation of 4-amino-3-methyl-5-styrylisoxazole 1 with salicylaldehydes, followed by reduction, treatment with arylisothiocyanates and subsequent ring closure in the presence of formaldehyde. The methodology used in this synthesis is the first approach of its kind towards the synthesis of title compounds. <br/> <br/>Page(s): 1753-1758 http://nopr.niscair.res.in/handle/123456789/2552 Title: Synthesis of 4-deoxy-4-thioarabinofuranosyl disaccharides, analogs of Mycobacterial arabinogalactan <br/> <br/>Authors: Khare, Naveen K; Reynolds, Robert C; Maddry, Joseph A <br/> <br/>Abstract: The first chemical synthesis of disaccharides, octyl 5-O-(4-deoxy-4-thio-⍺-D-arabinofuranosyl)-⍺-D-arabinofuranoside 1 and octyl 5-O-(4-deoxy-4-thio-β-D-arabinofuranosyl)-⍺-D-arabinofuranoside 2 incorporating 4-deoxy-4-thioarabinose is described. Designed to mimic components of mycobacterial arabinogalactan, a major and essential constituent of the cell wall of tuberculosis and related bacteria, the compounds may disrupt cell wall biogenesis. A variety of coupling methods have been investigated before finding satisfactory techniques useful for thiofuranoses. Reductive deprotection of the sulfur-containing species is problematic, though lithium naphthalenide has proved to be an effective technique. <br/> <br/>Page(s): 1748-1752