Some Metabolic Products of Basidiomycetes 7 



the difference in its ultraviolet absorption spectrum and also for its 

 higher antibiotic activity. 



Drosophilins C and D, isolated from culture liquids of Drosophila 

 subatrata, undergo the same characteristic allene to acetylene shift 



•C'l cm 



4000 



3500 



3000 



2500 



2000 



1500 



1000 



500 



200 225 250 275 300 



Wavelength, m/i 



325 



350 



Fig. 1. Ultraviolet absorption spectra of nemotin A and Bohlmann's acid. 



