Synthesis 



earlier work see the article Tryptophan in Thorpe's Dictionary 

 and the papers of Ellinger. References marked with an 

 asterisk are of mainly botanical or physiological interest. 



* Avery, G. S., Jr., Burkholder, P, R., and Creighton, Harriet 



B. (1937), Amer. Journ. Bot., 24, 226. 

 Barrett, H. S. B., Perkin, W. H., and Robinson, R. (1929), 



Journ. Chem. Soc, 2942. 

 Berg, C. P., Rose, W. C, and Marvel, C. S. (1929-30), Journ. 



Biol. Chem., 85, 219. 

 Braun, J. von, and Nelles, J. (1937), Ber., 70, B, 1767. 

 *Chen, H. K. (1938), Nature, 142, 753. 

 Davies, W., Atkins, G. A,, and Hudson, P. C. B., (1937), 



Annals Bot., New Ser., 1, 329_. 

 Ehrlich, F. (1912), Ber., 45, 883. 

 Ellinger, A. (1904), Ber., 37, 1801. 

 Ellinger, A. (1905), Ber., 38, 2884, 

 Ellinger, A., and Matsuoka, Z. (1920), Ztschr . physioL Chem. 



109, 259. 

 *Georgi, C, and Beguin, A. E. (1939), Nature, 143, 25. 

 Granacher, C, Gero, M., and Schelling, V. (1924), Helv. 



Chem. Acta, 7, 575, 

 Hartley, W. N., and Dobbie, J. J. (1899), Trans. Chem. Soc.y 



75, 640. 

 Hopkins, F, G., and Cole, S. W. (1903), Journ. Physiol., 29, 



451- 

 Jackson, R. W, (igzg), Journ. Biol. Chem., 84, i. 



Jackson, R. W. (1930), Journ. Biol. Chem., 88, 659. 



Jackson, R. W., and Manske, R. H. F. (1930), Journ. Amer. 



Chem. Soc., 52, 5029. 

 Jackson, R. W., and Manske, R.H.F. (1935), Canadian Journ. 



Res., Sect. B, 13, 170. 

 Japp, F. R., and Klingemann, F. (1888) Ber., 21, 549; 



Annalen, 247, 218. 

 De Jong, Anne W. K. (1900), Rec. trav. chim., 19, 259; ibid.., 



1904,23, 131. 

 Kalb, L., Schweizer, F., and Schimpf, G. (1926), Ber., 59, 



1858. L 



117 



