HO CsH,, 
Cannabinoid Reference 
Cannabifuran Friedrich-Fiechtl and 
Spiteller 1975 
Dehydrocannabifuran se) Friedrich-Fiechtl and 
Spiteller 1975 
Figure 9. Cannabinoid Structures — Cannabifuran Type 
R 
oO 
R 
oN 
HO R, 
R, 
Cannabinoid R R 1 R, R, Reference 
Cannabielsoic Acid A H CsH) COOH OH Shani and Mechoulam 1974 
Cannabielsoic Acid B COOH Cs) H OH Shani and Mechoulam 1974 
Cannabielsoin H CsH) OH OH Bercht et al. 1973a 
C,-Cannabielsoin H C3H, OH OH Grote and Spiteller 1978a 
C,-Cannabielsoic Acid B COOH C,H, H OH Grote and Spiteller 1978a 
Figure 10. Cannabinoid Structures — Cannabielsoin Type 
136 
