Synthesis of Di- and Triterpenoid Ferrocenyltriazoles

Ferrocene conjugates with a lupane triterpenoid linked through a triazole ring and C3 or C6 hydrocarbon tether were synthesized by reaction of ferrocenylalkylazides with betulonic acid propargyl ester. Analogous conjugates were obtained from dehydroabietic acid propargyl ester.