ISSN:
0018-019X
Keywords:
Chemistry
;
Organic Chemistry
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The conformation of 34 branched-chain unsaturated sugars, prepared by reacting different Wittig reagents with a series of 1,2-O-isopropylidene-furannosul-3-oses, has been studied by PMR spectroscopy. The position of each compound in the flexible conformational cycle has been established by using the known stereo-dependence of the allylic coupling constants and checked with the other parameters of the spectra. An ‘isopropylidenic’ 4J2,4 coupling constant, present in all compounds whose H - C(4) is endo and absent in their C(4)-epimers has proved useful for configurational assignment at C(4).
Additional Material:
6 Tab.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/hlca.19720550309
Permalink