Constitution of SanfaZbic A cid-The ultraviolet spectrum of santalbic acid showed a maximum at 229 mp (log e 4.22) and an inflexion at 240 mp (log E 4-06). These values indicated immediately that the acid contains, not a conjugated triene as chromophore, but a diene or enyne system. A naturally occurring enyne acid, ximenynic acid, has been described (Ligthelm, Schwarz, and von Holdt,
IntroductionThe discovery by BORODIN (2) COWARD (3), in 1926, modified the procedure by making the first step the decomposition of chlorophyll, which was followed by extraction with petroleum ether and the separation of carotene from xanthophyll by aqueous methyl alcohol. The use of diethyl ether in addition to acetone in
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