Progrès Dans La Chimie Des Substances Organiques Naturelles/Progress in the Chemistry of Organic Natural Products formatIsbn:Softcover - 9783709171509 Calbe (Saale)

Calbe (Saale)

wenn keine analytischen Methoden zur Problemlösung vorhanden sind

wo durch eine ganz einfache elektrische V orrichtung weit besser und billiger zum Ziele gelangt wer­ den kannte

due to the

wie auf vielen anderen Gebieten auch

Progrès Dans La Chimie Des Substances Organiques Naturelles/Progress in the Chemistry of Organic Natural Products formatIsbn:Softcover - 9783709171509 Calbe (Saale)During the early 1950's there appeared reports, from time to time of the presence among the products elaborated by actinomycetes of antifungal antibiotics which exhibited very similar and very characteristic multipeaked ultraviolet absorption spectra. In 1954, with a good number of examples on record, these spectra were analyzed and identified as those of straight chain conjugated polyenes, comprising tetraenes, pentaenes, hexaenes and heptaenes (85,