Pfizer Handbook of Microbial Metabolites 126 



L. C. Vining and W. A. Taber, Can. ]. Chem. 35 1461 

 (1957). 



David Gottlieb, P. K. Bhattacharyya, H. E. Carter and H. W. 

 Anderson, Phytopathology 41 393 (1951). (Isolation) 



Curt Leben, G. J. Stessel and G. W. Keitt, Mycologia 44 159 

 (1952). 



R. R. Smeby, Curt Leben, G. W. Keitt and F. M. Strong, 

 Phytopathology 42 506 (1952). 



236 Tennecetin, yellow amorphous powder. 



A tetraene antibiotic. U.V. absorption peaks at 288, 

 300-302, and 315-318 m^. 



Streptomyces chattanoogensis 



James Burns and D. Frank Holtman, Antibiotics and Chem- 

 otherapy 9 398 (1959). 



237 Antimycoin, organic acid, U.V. maxima: 291, 304—305, 318 



mjx in ethanol. Similar to fungicidin. (A tetraene) 

 Streptomyces aureus Waksman and Curtis 

 Carl P. Schaffner, Irwin D. Steinman, Robert S. Safferman 



and Hubert Lechevalier, "Antibiotics Annual 1957-1958," 



Medical Encyclopedia, Inc., New York, pp. 5869-5873. 



Frederick Raubitscheck, Robert F. Acker and Selman A. 



Waksman Antibiotics and Chemotherapy 2 179 (1952). 



238 Filipin, C:^2H-,40io, fine yellow needles, m.p. 195-205° (dec.) (s. 



147°), [a],," -148.3° (c 0.89 in methanol). 



A neutral pentaene. U.V. maxima at 322, 338, 355 m^. 

 Contains 7-8 acetylatable non-vicinal hydroxyl groups and 

 3-4 C— CH. groups. 



Possible partial structure : * 



CH3 OH OH 



-t I I I 



CH3— C— C— C=C— (C=C)4— c— c — c 



OH I C 



o I 



o=c— C— C— C— C— C— C— C— C— OH 



n— CsHu— C— OH 



Streptomyces fdipinensis n. sp. 



Geo. B. Whitfield, Thomas D. Brock, Alfred Ammann, 

 David Gottlieb and Herbert E. Carter, ]. Am. Chem. Soc. 77 

 4799 (1955). (Isolation) 



Alfred Ammann, David Gottlieb, Thomas D. Brock, Her- 



* See addendum. 



