Výsledky vyhledávání - "Barry Edward Ayres"

Synthesis and epimerisation studies on carbohydrate derived bicyclic tetronate esters: The synthesis of furanofurans related to the cytotoxic metabolite goniofufurone

Autor: Patrick J. Murphy, Brian Cox, Barry Edward Ayres, Peter R. Jones, Cristiano Cagnolini, Marina Ferri

Publikováno v: Tetrahedron. 53:4815-4820

The synthesis of the D-xylo- 12, D-lyxo- 13, D-ribo- 14 and D-arabino-furanofurans15 was accomplished from the readily available butyrolactones 4 and 5 via a non-classical Wittig cyclisation/hydrogenation sequence; these compounds are analogues of th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8cf37d23c9c504ed9dad1866dc82e685
https://doi.org/10.1016/s0040-4020(97)00164-6

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Conformational studies. Part 13.1H N.m.r. and X-ray analyses of 2β-bromo-3α-hydroxy-5α-pregnane-11,20-dione, 3α-hydroxy-2β-methoxy-5α-pregnane-11,20-dione, and 3α-hydroxy-2α-methyl-5α-pregnane-11,20-dione

Autor: Gordon Hanley Phillipps, George Ferguson, W. Basil Whalley, John M. Midgley, Barry Edward Ayres, Masood Parvez

Publikováno v: J. Chem. Soc., Perkin Trans. 2. :1176-1182

To investigate the potential relationship between structure and anaesthetic activity, the title steroids have been analysed by 1H n.m.r. spectroscopy, and by X-ray crystallography. The three compounds crystallise in the monoclinic space group P21 wit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::268874af6c76e326b7694b48ca7ed398
https://doi.org/10.1039/p29800001176

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Experimental and theoretical study of the induced paramagnetic ring-current in the 4-membered ring of biphenylene and related hydrocarbons

Autor: J. F. W. McOmie, Nicole Defay, J.B. Chadwick, Hubert Figeys, R.H. Martin, Barry Edward Ayres

Publikováno v: Tetrahedron. 32:2571-2578

Ring current intensities and proton chemical shifts have been calculated for a series of condensed aromatic hydrocarbons including biphenylenes. The calculations show that an induced paramagnetic ring current occurs in the 4-membered ring of each of

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8dca21c93425fcc9f257a643ab5e1477
https://doi.org/10.1016/0040-4020(76)88029-5

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Biphenylenes. Part XXVIII. Synthesis of some benzo[b]-, naphtho-[2,3-b]-, and anthra[2,3-b]-derivatives of biphenylene

Autor: Barry Edward Ayres, J. F. W. McOmie, Reda A. Kabli

Publikováno v: Journal of the Chemical Society, Perkin Transactions 1. :2267

The Friedel–Crafts acylation of biphenylene with the anhydrides of succinic, phthalic, and naphthalene-2,3-dicarb-oxylic acids has been studied. The resulting acylbiphenylenes were then converted into benzo[b]-, naphtho-[2,3-b]-, and anthra[2,3-b]-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5750e968ebc1adde8cb65ff628bf57cb
https://doi.org/10.1039/p19730002267

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