This meant breaking the molecule apart, atom by atom, then deducing its structure ... work using another alkaloid called physostigmine from the calabar bean, left). Chemical tour de force ...

However, the chemical components of ... separated these 12 dimeric amide alkaloids into 12 pairs of enantiomers using chiral HPLC. The complete structures of these compounds were elucidated ...

"Ibogaine's complex chemical structure makes it hard to produce ... "A lot of these iboga alkaloids and ibogaine analogs are ...