Pfizer Handbook of Microbial Metabolites lOO 



Richard Kuhn and Christoph Grundmann, Ber. 66 174 

 (1933). 



Mary A. Ingraham and Harry Steenbock, Biochem. J. 29 

 2553 (1935). 



F. P. Zscheile, J. W. White, B. W. Beadle and J. R. Roach, 

 Plant Physiol. 17 331 (1942). 



T. R. Seshadry and S. S. Subramanian, Proc. Indian Acad. 

 Sci. 30A (1949). 



172 Lycophyll (3,3'-Dihydroxylycopene), C40H56O2, purple crystals, 

 m.p. 179°, U.V. 444, 473, 504 m^ in petroleum ether. 



HO— 



Rho do spirillum ruhrum, Chromatium spp. 

 M. S. Barber, L. M. Jackson and B. C. L. Weedon, Proc. 

 Chem. Soc, 96 (1959). (Structure) 



L. Zechmeister and L. V. Cholnoky, Ber. 69B 422 (1936). 



173 Zeaxanthin (Zeaxanthol), C40H56O2, yellow crystals, m.p. 207° 

 (215°), optically inactive, U.V. 451, 476 m/x in petroleum 

 ether. 



/OH 



A 



M' ' ' ' 



HO^ ' 



Mycobacterium phlei, Dacromyces stillatus, Staphylo- 

 coccus aureus, Pseudomonas xanthochrus, P. aestumar- 

 ina. Vibrio adaptatus 



Erwln ChargafF and Joseph Dieryck, Naturwissenschaften 

 20 872 (1932). 



Mary A. Ingraham and Harry Steenbock, Biochem. J. 29 

 2553 (1935). 



Walter Steuer, Zentr. Bakteriol. Parasitenk. 167 210 (1956). 



T. W. Goodwin, Biochem. J. 53 538 (1953). 



