Thompson, Malcolm

Dedication This paper is dedicated to Malcolm J. Thompson, Belts-ville, Maryland USA, on the occasion of his retirement. We appreciate his most significant contributions to the chemistry of ecdysteroids and brassinosteroids. 

Malcolm J. Thompson, Ruben Lozano, James A. Svoboda, Mark F. Feldlaufer, and... 

Several workers have studied the infrared spectra of simple peptides (Thompson et al., 1950 Blout and Linsley, 1952 Ellenbogen, 1956 Berger et al., 1954 Elliott and Malcolm, 1956 Elliott, 1954 Asai et ai, 1955). Dipeptides have a dipolar ionic structure. Glycylglycine has bands at 3300, 3080 (NH stretching), 1655 (amide 1), 1630 (amino acid I band), 1575 (amino acid II band), 1540 (amide II), and 1240 cm (amide III) (Thompson et al., 1950 Blout and Linsley, 1952), and COO bands at 1608 and 1400 cm Bellamy (1958) has discussed the effect of the number of glycyl residues in the chain on the influence of the dipolar ionic structure on spectra. He has also discussed other types of polypeptides, including those composed of only one type of amino acid and those composed of mixed amino acids. (See also. Chapter 10.)... 

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