Zobrazeno 1 - 10
of 12
pro vyhledávání: '"Bruno Baehler"'
Autor:
Bruno Baehler, Alain P. Bonenfant, Jean M. J. Tronchet, Jean‐Bernard Zumwald, Alberto Gonzalez, Ernesto Martínez, Françoise Perret
Publikováno v:
Helvetica Chimica Acta. 63:1181-1189
Synthesis of Terminal Acetylenic Sugars Derivatives and Ynuronic Acids Derivatives by Use of a Wittig Reaction The method described for the preparation of terminal acetylenic sugars presents two advantages over earlier procedures: no new asymmetric c
Publikováno v:
Carbohydrate Research. 34:376-379
Publikováno v:
Helvetica Chimica Acta. 59:941-944
Enamino- and Halogenoacetylenic sugars Traitment of an aldehydosugar (1) with secondary amines gave in an essentially quantitative yield the expected enamines (4–6). Chloro- and bromo-acetylenic sugars (11–14) were obtained in good yields by reac
Autor:
Ford Habashi, Bruno Baehler, Olivier R. Martin, Jean‐Bernard Zumwald, Alain P. Bonenfant, Jean M. J. Tronchet
Publikováno v:
Helvetica Chimica Acta. 62:894-898
Diglycosyl Derivatives. Preliminary communication Novel types of diglycosyl compounds, some of them bearing a resemblance to natural di- or tri-saccharides are described: a diglycosyldiyne (1), a diglycosylthiophene (2), a diglycosylaziridine (3), a
Publikováno v:
Carbohydrate Research. 34:331-342
p -Nitrophenylhydrazones of aldehydo sugars have been treated with one equivalent of bromine. The presence of gem -bromoazo intermediates, which have been suggested for this type of reaction with an S E 2′ mechanism, have been demonstrated, and one
Publikováno v:
Helvetica Chimica Acta. 62:866-871
Stereoselective synthesis of cyclopropylsugars Use of the phase-transfer catalysis significantly increased the yield of the reactions leading to the known compounds 2 and 3. Stereoselective cyclopropylation of 3 and 4 and 8, was brought about using i
Autor:
Jean M. J. Tronchet, Nghiep Le-Hong, Joëlle Poncet, Bruno Baehler, Françloise Perret, Hansjörg Eder, Jean‐Bernard Zumwald
Publikováno v:
Helvetica Chimica Acta. 56:1310-1317
Treatment of 3-O-benzyl-1, 2-O-isopropylidene-3-O-methyl-α-D-xylo-pentodialdlo-1,4-furanose and 2,5-anhydro-3,4-O-isopropylidene-aldehydo-D-ribose with moderately stable and stable phosphonium ylides led to the corresponding terminal-unsaturated sug
Publikováno v:
Helvetica Chimica Acta. 60:1932-1934
Synthesis of amino-sugars using reductive amination reactions. Preliminary communication Treatment of aldehydo- or keto-sugars with primary or secondary amines and hydrogen in the presence of a catalyst (Pd/C) gave with good to excellent yields (67
Publikováno v:
Chemischer Informationsdienst. 7
Autor:
Françoise Perret, Bruno Baehler, Alberto Gonzalez, Jean M. J. Tronchet, Jean‐Bernard Zumwald, Alain P. Bonenfant, Ernesto Martínez
Publikováno v:
Chemischer Informationsdienst. 11