Pfizer Handbook of Microbial Metabolites 1 04 



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

 Chem. Soc, 96 (1959). 



182 Pigment R ( Spheroidenone ) , C41H58O2, red crystals, m.p. 155.5- 

 158°, U.V. 460 (455), 482 (4"87), 513 (516.5) rrifi in 

 light petroleum. 

 CH3O 



I I 



Rhodopseudomonas spheroides, other purple bacteria 

 C. B. Van Niel, Antonie Van Leeuwenhoek J. Microbiol. 

 Serol Jubilee Vol. Albert J. Kluyver 12 156 (1947). (Isola- 

 tion) 



T. W. Goodwin, D. G. Land and M. E. Sissins, Biochem. J. 

 64 486 ( 1 956 ) . ( Structure ) 



183 Pigment Y, C41H60O, yellow unstable crystals, m.p. 116-135° 

 (dec). Stable in solution. U.V. 426.5, 452 (454), 484 

 (486) nifj. in petroleum ether. 

 CH3O I 



^^^/^/^==^^^^^^^ 



Rhodopseudomonas spheroides, other purple bacteria 



A hydroxylated pigment Y was produced in the same 

 fermentation, but could not be crystallized. 



C. B. Van Niel, Antonie Van Leeuwenhoek J. Microbiol. 

 Serol. Jubilee Vol. Albert J. Kluyver 12 156 (1947). (Isola- 

 tion ) 



T. W. Goodwin, D. G. Land and M. E. Sissins, Biochem. J. 

 64 486(1956). (Structure) 



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



184 Spirilloxanthin (Rhodoviolascin), C42H6„02, violet spindle-form 

 crystals, m.p. 218°, U.V. 464, 491, 524 m^x in petroleum 

 ether. 



CH3O 



\l 



^/^=^-/W^'^/^^^/^^/^^/^-^ 



