scholarly journals OPTICAL ROTATORY DISPERSION OF SOME BRIDGED DERIVATIVES OF ALKYLTARTRATES

1936 ◽  
Vol 11 (9) ◽  
pp. 586-592
Author(s):  
Yojiro Tsuzuki
Keyword(s):  
Optical Rotatory Dispersion ◽  
Rotatory Dispersion ◽  
Optical Rotatory ◽  
Derivatives Of

Optical rotatory dispersion studies of 2H-naphtho(1,8-bc)- and naphtho(2,3-b)furan derivatives

1969 ◽  
Vol 47 (13) ◽  
pp. 2465-2471 ◽  
Author(s):  
P. Joseph-Nathan ◽  
Ma. P. González
Keyword(s):  
Optical Rotatory Dispersion ◽  
Rotatory Dispersion ◽  
Optical Rotatory ◽  
Furan Derivatives ◽  
Cotton Effects ◽  
Derivatives Of

The study of the optical rotatory dispersion (o.r.d.) curves of some derivatives of the title systems, possessing various degrees of oxidation which contain asymmetrical centers near the chromophores, permits correlations between Cotton effects and stereochemistry. The configurations of those asymmetrical centers not known earlier, have been determined with the aid of the o.r.d. curves.

Enantiomeric 3-hydroxypent-4-enethionamides from thioglucosides of Crambe and Brassica seeds by action of ferrous salts

1968 ◽  
Vol 46 (9) ◽  
pp. 1507-1512 ◽  
Author(s):  
F. L. Austin ◽  
C. A. Gent ◽  
I. A. Wolff
Keyword(s):  
Brassica Napus ◽  
Magnetic Resonance ◽  
Proton Magnetic Resonance ◽  
Optical Rotatory Dispersion ◽  
Rotatory Dispersion ◽  
Seed Meal ◽  
Optical Rotatory ◽  
Crambe Abyssinica ◽  
Magnetic Resonance Studies ◽  
Derivatives Of

epi-Progoitrin, the major thioglucoside of Crambe abyssinica seed, is cleaved by ferrous salts to yield (S)-1-cyano-2-hydroxy-3-butene and (S)-3-hydroxypent-4-enethionamide. The products are the same whether obtained from the purified thioglucoside or from the seed meal. Identical behavior was observed for seed meal of Brassica napus, which gave corresponding derivatives of the opposite configuration. Optical rotatory dispersion and proton magnetic resonance studies suggest the existence of solvent-dependent differences in rotamer composition for the 3-hydroxypent-4-enethionamides.

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