β-Aminoarteether (SM934 free base), an orally active derivative of Artemisinin, serves a pivotal role in the research of inflammation and autoimmune disorders, including those related to lupus diseases.

Tryptophan is one of the 20 standard amino acids. The D-stereoisomer is occasionally found in naturally produced peptides.

Reptoside, which can be extracted from the roots and above-ground parts of Cortex Eucommiae and Ajuga chamaepitys (L.) Schreb, is one of the active cyclic enol ether terpene glycosides of Cortex Eucommiae for the treatment of osteoporosis.