Is an acyl group at O-3 in glucosyl donors able to control α-stereoselectivity of glycosylation? The role of conformational mobility and the protecting group at O-6

2014 ◽  
Vol 384 ◽  
pp. 70-86 ◽  
Author(s):  
Bozhena S. Komarova ◽  
Maria V. Orekhova ◽  
Yury E. Tsvetkov ◽  
Nikolay E. Nifantiev
Keyword(s):  
Conformational Mobility ◽  
Protecting Group

Stereoselective Glycosylation of Glucosamine: The Role of theN-Protecting Group

2012 ◽  
Vol 7 (11) ◽  
pp. 2482-2501 ◽  
Author(s):  
Ramu Enugala ◽  
Luísa C. R. Carvalho ◽  
Marina J. Dias Pires ◽  
M. Manuel B. Marques
Keyword(s):  
Protecting Group ◽  
Stereoselective Glycosylation

The role of conformational mobility in the stereospecific loss of water under electron impact

1979 ◽  
Vol 44 (12) ◽  
pp. 3595-3603 ◽  
Author(s):  
František Tureček ◽  
Vladimír Hanuš ◽  
Miloš Tichý
Keyword(s):  
Electron Impact ◽  
Mass Spectra ◽  
Molecular Ions ◽  
Conformational Mobility ◽  
Water Elimination

Mass spectra of nine of the sixteen possible diastereoisomeric 7-hydroxytricyclo[7.3.0.02,6]dodecanes are reported. The spectra differ considerably in the extent of water elimination from molecular ions. The diastereoisomers which have conformationally flexible cis-anti-cis, cis-anti-trans and cis-syn-trans skeletons exhibit abundant (M-H2O)+. ions. Molecular ions of the rigid trans-anti-trans isomers lose water to a markedly smaller extent, the main fragmentation proceeding via a skeletal cleavage. Effects of conformational mobility are emphasized.

ChemInform Abstract: Stereoselective Glycosylation of Glucosamine: The Role of the N-Protecting Group

ChemInform ◽  
2013 ◽  
Vol 44 (15) ◽  
pp. no-no
Author(s):  
Ramu Enugala ◽  
Luisa C. R. Carvalho ◽  
Marina J. Dias Pires ◽  
M. Manuel B. Marques
Keyword(s):  
Protecting Group ◽  
Stereoselective Glycosylation

ChemInform Abstract: Differential Reactivity of Fluorinated Homopropargylic Amino Esters vs Gold(I) Salts. The Role of the Nitrogen Protecting Group.

ChemInform ◽  
2015 ◽  
Vol 46 (27) ◽  
pp. no-no
Author(s):  
Maria Sanchez-Rosello ◽  
Javier Miro ◽  
Carlos del Pozo ◽  
Santos Fustero
Keyword(s):  
Protecting Group ◽  
Amino Esters ◽  
Differential Reactivity

Differential reactivity of fluorinated homopropargylic amino esters vs gold(I) salts. The role of the nitrogen protecting group

2015 ◽  
Vol 171 ◽  
pp. 60-66 ◽  
Author(s):  
María Sánchez-Roselló ◽  
Javier Miró ◽  
Carlos del Pozo ◽  
Santos Fustero
Keyword(s):  
Protecting Group ◽  
Amino Esters ◽  
Differential Reactivity

Biotransformation of β-amino nitriles: the role of the N-protecting group

2004 ◽  
Vol 29 (1-6) ◽  
pp. 115-121 ◽  
Author(s):  
Margit Preiml ◽  
Helmut Hönig ◽  
Norbert Klempier
Keyword(s):  
Protecting Group
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