cis-4-Hydroxy-D-proline belongs to the class of organic compounds known as proline and derivatives. Proline and derivatives are compounds containing proline or a derivative thereof resulting from a reaction of proline at the amino group or the carboxyl group or from the replacement of any hydrogen of glycine by a heteroatom.

Hyponine E is a natural product.

MAT2A inhibitor 4 is an inhibitor of the catalytic subunit of methionine S-adenosyltransferase-2 (MAT2A).