New PDF release: Anomeric Effect. Origin and Consequences

By Walter A. & Derek Horton (eds.) Szarek

ISBN-10: 0841204705

ISBN-13: 9780841204706

ISBN-10: 0841205973

ISBN-13: 9780841205970

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 middle in pyranoses and pyranosides / G.A. Jeffrey --
facets of conformational research of pentopyranosyl acetates, benzoates, and halides / Hans Paulsen, Peter Luger, and Fred R. Heiker --
The impression 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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Download e-book for iPad: Anomeric Effect. Origin and Consequences 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 impact / R. U. Lemieux, S. Koto, and D. Voisin -- Proton spin-lattice rest : a brand new, quantitative degree of aglycon-sugar interactions / J. M. Berry, L.

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Extra resources for Anomeric Effect. Origin and Consequences

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And Shatkina, T. , Tetrahedron, (1962) 18, 237. 11. Tardella, P. , Tetrahedron Letters, (1969) 14, 1117. 12. House, H. , Czuba, L. , and Olmstead, H. , J. Org. , (1969) 34, 2324. 13. Eliel, E. , Martin, R. J. , Org. , (1967) 47, 16. 14. Johnson, W. S. , J. Am. Chem. , (1947) 69, 1361. 15. , Bull. Soc. , France, (1950) 17, 631. 16. , Progr. Nucl. Magn. , (1969) 5, 149. 17. Lemieux, R. , Bundle, D. , and Baker, D. , J. Am. Chem. , (1975) 97, 4076 18. Painter, T. , J. Chem. , Perkin Trans. II, (1976) 215.

The point for a specific angle corresponds to the conformation for which the tp ' angle provided the minimum nonbonded interaction. H H H 2. 25 Exo-Anomeric Effect LEMIEUX E T A L . e f f e c t i s s u f f i c i e n t l y s t r o n g t o m a i n t a i n H = - 6 0 ° , t h e <|>H t o r s i o n a n g l e w h i c h would p r o v i d e t h e most f a v o r a b l e compromise c o u l d t e n d t o w a r d and p e r h a p s a c h i e v e - 3 0 ° . As w i l l be s e e n b e l o w , a c a s e c a n be made t h a t t h e K a r p l u s r e l a t i o n s h i p o f t h e form JQH 1^ cos <{> may u s e f u l l y a p p l y f o r t h e c o u p l i n g o f an a g l y c o n i c c a r b o n w i t h t h e a n o m e r i c h y d r o g e n .

14. Johnson, W. S. , J. Am. Chem. , (1947) 69, 1361. 15. , Bull. Soc. , France, (1950) 17, 631. 16. , Progr. Nucl. Magn. , (1969) 5, 149. 17. Lemieux, R. , Bundle, D. , and Baker, D. , J. Am. Chem. , (1975) 97, 4076 18. Painter, T. , J. Chem. , Perkin Trans. II, (1976) 215. RECEIVED September 27, 1978. ) Measure of Aglycon-Sugar Interactions (1) J. M. BERRY, L. D. HALL, D. G. WELDER, and K. F. ch003 Department of Chemistry, The University of British Columbia, Vancouver, British Columbia, Canada V6T 1W5 It is now well known that the anomeric effect of many substituents can dominate the conformations favoured by carbohydrate derivatives in solution.

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Anomeric Effect. Origin and Consequences by Walter A. & Derek Horton (eds.) Szarek


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