01438nas a2200205   4500008004100000022001400041245014800055210006900203260011000272300001400382490000600396520057500402100002300977700002101000700002501021700001501046700002601061700002201087856012301109       2005                        eng d  a1477-052000aAziridine carboxylate from D-glucose: synthesis of polyhydroxylated piperidine, pyrrolidine alkaloids and study of their glycosidase inhibition0 aAziridine carboxylate from Dglucose synthesis of polyhydroxylate  aTHOMAS GRAHAM HOUSE, SCIENCE PARK, MILTON RD, CAMBRIDGE CB4 0WF, CAMBS, ENGLANDbROYAL SOC CHEMISTRYcOCT  a3720-37260 v33 a<p>The D-glucose derived aziridine carboxylate 5 was obtained from (E)-ethyl-6-bromo-1,2-O-isopropylidene-3-O-benzyl-5-deoxy-alpha-D-xylo-5 -eno-heptofuranuronate 4 through conjugate addition of benzylamine and in situ intramolecular nucleophilic expulsion of bromine. The regioselective aziridine ring-opening, using water as a nucleophile, resulted in the alpha-hydroxy-beta-aminoester 6, which was exploited in the synthesis of six and five membered azasugars 1b/1c and 2b/2c, respectively The glycosidase inhibitory activity of the title compounds was evaluated.</p>1 aDhavale, Dilip, D.1 aKumar, K., S. A.1 aChaudhari, Vinod, D.1 aSharma, T.1 aSabharwal, Sushma, G.1 aPrakashaReddy, J.  uhttps://library.ncl.res.in/content/aziridine-carboxylate-d-glucose-synthesis-polyhydroxylated-piperidine-pyrrolidine-002007nas a2200277   4500008004100000022001400041245013800055210006900193260007600262300001400338490000700352520097700359653002401336653001901360653002601379653002601405100001901431700002201450700002001472700001901492700002001511700002201531700001901553700002701572856013001599       2005                        eng d  a0947-653900aStructural rationalisation of co-crystals formed between trithiocyanuric acid and molecules containing hydrogen bonding functionality0 aStructural rationalisation of cocrystals formed between trithioc  aCOMMERCE PLACE, 350 MAIN ST, MALDEN 02148, MA USAbWILEY-BLACKWELLcAPR  a2433-24390 v113 a<p>Crystallisation of trithiocyanuric acid (TTCA) from various organic solvents that have hydrogen bonding capability (acetone, 2-butanone, dimethylformamide, dimethyl sulfoxide, methanol and acetonitrile) leads to the formation of co-crystals in which the solvent molecules are incorporated together with TTCA in the crystal structure. Structure determination by single-crystal X-ray diffraction reveals that these co-crystals can be classified into different groups depending upon the topological arrangement of the TTCA molecules in the crystal structure. Thus, three different types of single-tape arrangements of TTCA molecules and one type of double-tape arrangement of TTCA molecules are identified. In all co-crystals, hydrogen-bonding interactions are formed through the involvement of N-H bonds of TTCA molecules in these tapes and the other molecule in the co-crystal. Detailed rationalisation of the structural properties of these co-crystals is presented.</p>10acrystal engineering10ahydrogen bonds10anitrogen heterocycles10astructure elucidation1 aAhn, Sung-Hoon1 aPrakashaReddy, J.1 aKariuki, B., M.1 aChatterjee, S.1 aRanganathan, A.1 aPedireddi, V., R.1 aRao, C., N. R.1 aHarris, Kenneth, D. M.  uhttps://library.ncl.res.in/content/structural-rationalisation-co-crystals-formed-between-trithiocyanuric-acid-and-molecules-001278nas a2200205   4500008004100000022001400041245018200055210006900237260007300306300001000379490000800389520040300397653001900800653002900819653003000848100002000878700002200898700002200920856013000942       2009                        eng d  a0022-286000aC-H center dot center dot center dot N hydrogen bonds mediated solid state structures of 2,2 `-bis (4-pyridylsulfanylmethyl)-1,1 `-biphenyl and 9-(4-pyridylsulfanyl)phenanthrene0 aCH center dot center dot center dot N hydrogen bonds mediated so  aPO BOX 211, 1000 AE AMSTERDAM, NETHERLANDSbELSEVIER SCIENCE BVcNOV  a81-840 v9373 a<p>Solid state structure elucidation of sulfanyl ligands, 2,2'-bis(4-pyridylsulfany[methyl)-1,1'-biphenyl, L(1) and 9-(4-pyridylsulfanyl)plienanthrene, L(2) are reported. In the structures L(1) and L(2), the molecules are self-assembled through C-H center dot center dot center dot N hydrogen bonds, yielding ensembles of cyclic and helical networks. (C) 2009 Elsevier B.V. All rights reserved.</p>10ahydrogen bonds10anoncovalent interactions10aSupramolecular assemblies1 aUpadhye, Ketaki1 aPrakashaReddy, J.1 aPedireddi, V., R.  uhttps://library.ncl.res.in/content/c-h-center-dot-center-dot-center-dot-n-hydrogen-bonds-mediated-solid-state-structures-22-0