Výsledky vyhledávání - "Gilbert J. Lewis"

Use of carbohydrate derivatives for studies of phosphorus stereochemistry

Publikováno v: Carbohydrate Research. 45:65-72

Cyclic phosphonamidothioate and cyclic phosphoramidothioate derivatives of carbohydrates are converted stereospecifically into acyclic S -methyl phosphonothioate and phosphorothioate carbohydrate derivatives. These derivatives are convenient substrat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9a742723a8bd5d18d7fc8e050f20dbe1
https://doi.org/10.1016/s0008-6215(00)85866-8

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Conversion of L-rhamnose and D-mannitol into the enantiomeric acetyl-α- and -β-methylcholines

Autor: Gilbert J. Lewis, Thomas D. Inch

Publikováno v: Carbohydrate Research. 16:455-458

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::14a90236a83688d235c7ecf4b32dfbea
https://doi.org/10.1016/s0008-6215(00)81182-9

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A stereochemical comparison of some addition reactions to methyl 4,6-O-benzylidene-3-deoxy-3-C-ethyl-α-D-hexopyranosid-2-uloses

Autor: Thomas D. Inch, N. Williams, Gilbert J. Lewis

Publikováno v: Carbohydrate Research. 19:17-27

Methyl 4,6-O-benzylidene-3-deoxy-3-C-ethyl-α- D -ribo-hexopyranosid-2-ulose (2) reacts with lithium aluminium hydride, methylmagnesium iodide, and phenylmagnesium bromide to give products having only the allo configuration. The C-3 epimer of 2, meth

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::4fb9e6912b001fad9a466ccf75383c79
https://doi.org/10.1016/s0008-6215(00)80308-0

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The synthesis and degradation of benzyl 4,6-O-benzylidene-2,3-dideoxy-3-C-ethyl-2-C-hydroxymethyl-α-d-glucopyranoside and -mannopyranoside

Autor: Gilbert J. Lewis, Thomas D. Inch

Publikováno v: Carbohydrate Research. 22:91-101

The use of carbohydrates for establishing, by synthesis, the absolute configuration of branched aliphatic alcohols is demonstrated by the synthesis and degradation of carbohydrate derivatives that contain two branch points. Benzyl 4,6- O -benzylidene

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::133a95b8f6400f68dbd87c03ff24821f
https://doi.org/10.1016/s0008-6215(00)85729-8

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The influence of steric factors in diazoalkane-pyranosid-2-ulose reactions

Autor: Gilbert J. Lewis, R. P. Peel, Thomas D. Inch

Publikováno v: Carbohydrate Research. 19:29-38

The reactions of diazomethane with methyl 4,6-O-benzylidene-3-deoxy-3-C-ethyl-α- D -arabino- and -ribo-hexopyranosid-2-uloses (1 and 2) afford spiro-epoxides preponderantly, whereas the corresponding reactions of 1 and 2 with diazoethane give, exclu

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::a11e224e870a163fbb32a9c74739e14e
https://doi.org/10.1016/s0008-6215(00)80309-2

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The synthesis of branched-chain, deoxy sugars by sugar epoxide-grignard reagent reactions

Autor: Thomas D. Inch, Gilbert J. Lewis

Publikováno v: Carbohydrate Research. 15:1-10

Alkylmagnesium chlorides react with methyl 2,3-anhydro-4,6- O -benzylidene-α- d -mannopyranoside ( 1 ) and -α- d -allopyranoside ( 2 ) to give, preponderantly, 3-alkyl and 2-alkyl, branched-chain, deoxy sugars. In contrast, alkylmagnesium iodides a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1d0d5c0b0a2a0e382bf39e0f32c4e80b
https://doi.org/10.1016/s0008-6215(00)80287-6

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