yoi 



Addendum 



A new polypeptide antibiotic, glumamycin, has been 

 reported.^" It consists of colorless powder, m.p. 230° 

 (dec), mol. wt. ^1800 and is composed of 4-isotri- 

 decenoic acid, CsHi7CH=CHCoH4— COOH, L-aspartic 

 acid, glycine, L-valine, L-proline, D-pipecolic acid and 

 a,/3-diaminobutyric acid. 



A number of compounds listed in the unclassified sec- 

 tion are known to be or thought to be polypeptides. 

 These include alboverticillin, antibiotic B-456, bacilipins, 

 bacillomycins, bacilysin, datemycin, diplococcin, dista- 

 mycin A, laterosporin, melanosporin, mikamycins, mito- 

 mycins, monilin, mycospocidin, phleomycin, pluramycins, 

 racemomycins, ractinomycins, roseomycin, taitomycin, 

 violacetin and undoubtedly others. 



18. Heterocycles 



C. PYRANS AND RELATED SUBSTANCES 



8-Hydroxy-3,4-dimethylisocoumarin has been isolated 

 from cultures of a wild Oospora specimen.^"' 

 ^'' Michitaka Inoue, Hiroshi Hitomi, Komei Mizuno, Masahiko 

 Fujino, Akira Miyake, Koiti Nakazawa, Motoo Shibata and Toshihiko 

 Kanzaki, ibid. 33 1014 (1960). 



^'^ I. Yamamoto and Y. Yamamoto, Bull. Agr. Chem. Soc. (Japan) 

 24 628 (1960). 



