Pfizer Handbook of Microbial Metabolites i8o 



H. S. Burton and E. P. Abraham, Biochem. J. 50 168 

 (1951). (Isolation) 



H. S. Burton, E. P. Abraham and H. M. E. Cardwell, ibid. 

 62 171 (1956). 



CIBA Lectures in Microbial Biochemistry, E. P. Abraham, 

 "Biochemistry of Some Peptide and Steroid Antibiotics," The 

 cephalosporins, John Wiley and Sons, New York, 1957, pp. 

 30-63. (A review) 



368 Cephalosporin Pj, C32H480,s, colorless crystals, m.p. 147°, [aln^" 

 +28° (2.7 in chloroform). 



Cephalosporium spp. 



A number of similar substances, called cephalosporins 

 P2, P3, P4 and P5 were isolated from the same fermenta- 

 tion, but were not obtained in high enough yields to per- 

 mit much structure work. 



H. S. Burton and E. P. Abraham, Biochem. J. 50 168 

 (1951). (Isolation) 



H. S. Burton, E. P. Abraham and H. M. E. Cardwell, 

 Biochem. J. 62 171 (1956). 



CIBA Lectures in Microbial Chemistry, E. P. Abraham, 

 "Biochemistry of Some Peptide and Steroid Antibiotics," The 

 cephalosporins, John Wiley and Sons, New York, 1957. pp. 

 30-63. (A review) 



