Spectral and Other Physical Data

Spectral and Other Physical Data.—13C N.m.r. studies on hydroxy- and chloro-menthanes have revealed that certain shifts are very sensitive and reliable probes 

Robinson, Organic Constituents of Higher Plants , Corduis Press, Amherst, Mass., 4th Edn., 1980, 352 pp. 

Herbert, Biosynthesis of Secondary Metabolites , Chapman and Hall, London, 1981, 250 pp. 

Vickery and B. Vickery, Secondary Plant Metabolism , University Park Press, Baltimore Md., 1981, 335 pp. 

Cori (and nine others), Mol. Biol. Biochem. Biophys., 1980, 32, 97. 

Michael-adducts [isopulegone, (18)]. y-Shift correlations are of value in assigning hydroxy- and bromo-substituent group stereochemistry adjacent to axial methyl or gem-dimethyl groups in substituted cyclohexanes.Further n.m.r. data are reported below in the discussion on absolute configuration and optical purity, as well as in individual sections. 

Further papers in this section report intramolecular hydrogen-bonding in 2-arylaminomethylenecycloalkanones (menthone, carvomenthone, camphor), the effect of chlorinated solvents on the stability constants of hydrogen-bonded complexes between pyrrole and, inter alia, fenchone,and a correlation of half-wave oxidation potentials with the pK values of the corresponding conjugate acids e.g. 3-endo-cyanocamphor).  

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