CYCLOSADOL, ISOCYCLOSADOL, AND OTHER RELATED TRITERPENE ALCOHOLS OBTAINED FROM 24-METHYLENECYCLOARTANOL BY ACID-CATALYZED ISOMERIZATION.
The acid-catalyzed isomerization of 24-methylenecycloartanol with sulfuric acid afforded cyclosadol (23E- DELTA **2**3), isocyclosadol (23Z- DELTA **2**3), and other isomers, including lanostane- and cucurbitane-type isomers with (23E)- and (23Z)- DELTA **2**3- and DELTA **2**4-unsaturated side chains. The phytochemical significance of the isomers is discussed.
Shimizu,Itoh,Ichinohe,Matsumoto
p. 1425 - 1426
(2007/10/02)
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