I03 



Carotenes and Carotenoids 



Phytofluene probably occurs widely among microorgan- 

 isms. It is a probable precursor of many of the carotene 

 pigments. 



L. Zechmeister and F. Haxo, Arch. Biochem. 11 539 (1946). 

 (Isolation from neurospora) 



L. Zechmeister, Experientia 10 1 (1954). (Structure) 



179 P-481,C4iH-,sO, U.V. 455, 482, 514 m^ in petroleum ether. 

 Tentative structure: 



V^^^%^^/^^/^==^ /^ 



OCH3 



Rho do spirillum rubriim, Chromatium spp. 

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

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



Synnove Liaaen Jensen, Acta Chem. Scand. 12 1698 (1958). 



180 Hydroxy-P-481 (May = Rhodovibrin), C41H5SO., U.V. 455, 482, 

 515 m/x in petroleum ether. 

 Tentative structure: 



^^-"^^-^^ 



OH 



Rho do spirillum rubrum, Chromatium, spp. 

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

 Chem. Soc, 96 (1959). 



Synnove Liaaen Jensen, Acta Chem. Scand. 12 1698 (1958). 



181 Hydroxyspirilloxanthin (May = Bacteriopurpurin, Bacterioeryth- 

 rin) C4iH-„sOo, U.V. 489, 523 m^x in petroleum ether. 

 Tentative structure: 



^^^^.^5^/^^^ 



HO 



\l 



OCH3 



Rhodospirillum rubrum, Chromatium spp. 



