Lycopodium alkaloids represent a structurally diverse family of nitrogenous natural products derived from club mosses. These compounds exhibit a wide range of ring systems—commonly 5/6/6 tricyclic and ...

Ephedra, a genus of spiny, dioecious shrubs found in arid and semiarid regions worldwide, has been prized in traditional systems of medicine for millennia. Modern phytochemical investigations have ...

For recreational drug users looking for an opioidlike high without the legal problems of heroin, fentanyl, and oxycodone, the Southeast Asian plant called kratom (Mitragyna speciosa) has provided an ...