Abeo-HHC acetate

Abeo-HHC acetate is a semi-synthetic derivative of tetrahydrocannabinol, first described in the 1980s. It is synthesised from delta-11-tetrahydrocannabinol, which can be made to undergo a ring expansion reaction via a hydrazone intermediate. It is structurally similar to HHC-acetate except that the methylated cyclohexyl ring has been replaced by a cycloheptane.