— 353 — 



Triossideidroirene 

 H3C CH3 



H3C. 



c 



CH.OH 



CH.OH 



CO. 



Acido joncgenogonico 

 H3C CH3 



H3C. 



c 



CH.C02H. 



co 



Acido iregenondicarbossilico 



H3C CH3 



\ / 



C _ CO^H 



H3C.C6H3 



\o.CO2H 



(2) 



Acido jonegendlcarbossilico 

 H3C CH3 



C — CO2H 



(4) 



H3C.C6H3^ 



(1) 



"C02H 



(2) 



Jonegenalide 



H3C CH3 



\ / 



C_ CH.OH 



(4) \ 



H3C.C«H3^ 0 



\o/ 



(3) 



