Aqueous Glycosylation of Unprotected Sucrose Employing Glycosyl Fluorides in the Presence of Calcium Ion and Trimethylamine
作者:Guillaume Pelletier、Aaron Zwicker、C. Liana Allen、Alanna Schepartz、Scott J. Miller
DOI:10.1021/jacs.5b13384
日期:2016.3.9
synthetic glycosylation reaction between sucrosyl acceptors and glycosyl fluoride donors to yield the derived trisaccharides. This reaction proceeds at room temperature in an aqueous solvent mixture. Calcium salts and a tertiary amine base promote the reaction with high site-selectivity for either the 3'-position or 1'-position of the fructofuranoside unit. Because nonenzymatic aqueous oligosaccharide syntheses
作者:Lichtenthaler, Frieder W.、Immel, Stefan、Pokinskyj, Peter
DOI:——
日期:——
Hamann, Carl Heinz; Fischer, Susanne; Polligkeit, Herbert, Zeitschrift fur Physikalische Chemie, 1994, vol. 185, # 1, p. 69 - 78
作者:Hamann, Carl Heinz、Fischer, Susanne、Polligkeit, Herbert、Schleif, Daniela、Wolf, Peter
DOI:——
日期:——
RETARDATION FILM, ELONGATED CIRCULARLY POLARIZING PLATE AND ORGANIC EL DISPLAY PRODUCED USING SAID RETARDATION FILM
申请人:Konica Minolta, Inc.
公开号:US20150253480A1
公开(公告)日:2015-09-10
Disclosed is a retardation film which has a slow axis with an angle of 10 to 80° with respect to a longitudinal direction thereof, wherein the retardation film contains cellulose acylate having a degree of acyl substitution of 2.0 to 2.7, and wherein: Ro
550
is 115 to 160 nm; ΔRo is 3 to 30 nm; each of ΔRc, ΔRa, and Rc and Ra at a wavelength of 550 nm is equal to or greater than 0; a retardation share ratio of Ra
550
to Ro
550
is 10 to 80; and a wavelength-dispersion share ratio of ΔRa to ΔRo is 0 to 80.