283 Tetracycline, Analogues and Related Substances 



616 Aklavin, C:^oH;i-0,,N (Hydrochloride) orange crystals, m.p. 



197°. 



Amphoteric. Contains an amino sugar, C.^Hj^OiN, iso- 

 meric with mycaminose or amosamine linked glycosidi- 

 cally to the secondary hydroxyl group. 



Streptomyces sp. 



F. Strehtz, H. Flon, U. Weiss and I. N. Asheshor, ]. Bacte- 

 riol. 72 90 (1956). 



617 Cinerubins 



Cinerubins A and B are isomeric red bases, with the 

 empirical formula C44H.-,.,OisN±CHo. The chromophoric 

 aglycone has been shown to be identical with e-pyrromy- 

 cinone. Both cinerubins also contain three sugars, two 

 of these being the same in both compounds, but the third 

 one being characteristic. The structures of these sugars 

 have not been reported yet. 



Streptomyces antihioticus (Waksman and Woodruff) 

 Waksman et Henrici, S. galiloeus Etthnger et al., S. niveo- 

 ruber Ettlinger et al. 



Leopold Ettlinger, Ernest Gaumann, Ralf Hiitter, Walter 

 Keller-Schierlein, Frlederich Kradolfer, Lucien Neipp, Vlado 

 Prelog, Pierre Reusser and Hans Zahner, Chem. Ber. 92 1867 

 (1959). 



