By Walter A. & Derek Horton (eds.) Szarek
content material: The interplay among the ring-oxygen p-type lone pair and adjoining [sigma]-bonds in pyranose derivatives / Serge David --
The exo-anomeric influence / R.U. Lemieux, S. Koto, and D. Voisin --
Proton spin-lattice leisure : a brand new, quantitative degree of aglycon-sugar interactions / J.M. Berry, L.D. corridor, D.G. Welder, and K.F. Wong --
The structural houses of the anomeric heart in pyranoses and pyranosides / G.A. Jeffrey --
points of conformational research of pentopyranosyl acetates, benzoates, and halides / Hans Paulsen, Peter Luger, and Fred R. Heiker --
The effect of reactant constitution and solvent on glycoside synthesis / Conrad Schuerch --
Conformational interactions in 1,4-heterobutane segments / Ernest L. Eliel and Eusebio Juaristi.
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Extra resources for Anomeric Effect. Origin and Consequences
All spectra were monitored as for those in Figure 2 except for pulse delay — 15 sec. The duration of the selective 180°-pulse was 38 msec (13 Hz bandwidth). The time interval (sec) between the selective 180°- and 90°-pulses are indicated to the right of each spectrum. ch003 38 ANOMERIC E F F E C T TABI£ I. S p i n - l a t t i c e Relaxation R a t e s a (10"*3 ecT ±5%) f o r the Anomeric R^H-l) R^nsJ/R^H-l) S 1 Protons o f Methyl Gluoopyranosides^. 50 W u r e d using the t h r e e - p u l s e , i n v e r s i o n - r e c o v e r y sequence with a V a r i a n XI/-100 (15) spectrometer f i t t e d w i t h a V a r i a n 620 L (16K) computer and a L i n e Tape u n i t (model O0600); tlie v a l u e s were c a l c u l a t e d from the s e m i - l o g p l o t s , u s i n g a l e a s t - s q u a r e f i t , computer program.
Ch002 Literature Cited 1. Lemieux, R. U. , Tetrahedron, (1974) 30, 1933. 2. Lemieux, R. U. and C h ü , N. , Abstracts of Papers, Am. Chem. , (1958) 133, 31N. 3. Lemieux, R. , Pavia, A. , Martin, J. , and Watanabe, K. , Can J. , (1969) 47, 4427. 4. Berman, H. , Chu, S. S. , and Jeffrey, G. , Science, (1967) 157, 1576. 5. Jeffrey, G. , Pople, J. , (1972) 25, 117. 6. Delbaere, L. T. J. and James, M. N. , Department of Biochemistry, University of Alberta, unpublished results. 7. Lemieux, R. Y. Acad.
0 Figure 3. Partial 100-MHz H NMR spectra of methyl (3-D-glucopyranoside, showing the single selective determination of the spin-lattice relaxation rate of H-l using a two-pulse inversion-recovery sequence. All spectra were monitored as for those in Figure 2 except for pulse delay — 15 sec. The duration of the selective 180°-pulse was 38 msec (13 Hz bandwidth). The time interval (sec) between the selective 180°- and 90°-pulses are indicated to the right of each spectrum. ch003 38 ANOMERIC E F F E C T TABI£ I.