Pyrrolo[1,2-a]pyrazine-1,4-dione, hexahydro-3-(2-methylpropyl)-, (3S,8aS)-
Pyrrolo[1,2-a]pyrazine-1,4-dione, hexahydro-3-(2-methylpropyl)-, (3S-trans)-
Pyrrolo[1,2-a]pyrazine-1,4-dione, hexahydro-3-isobutyl-, stereoisomer
(3S,8aS)-Hexahydro-3-(2-methylpropyl)pyrrolo[1,2-a]pyrazine-1,4-dione
L-Leucyl-L-proline lactam
Cyclo(L-prolyl-L-leucyl)
Cyclo-L-prolyl-L-leucine
Cyclo(proline-leucine)
L-Leucyl-L-prolyl lactam
Gancidin W
Cyclo(L-Leu-L-Pro)
Cyclo(Pro-Leu)
Maculosin 6
Cyclo(L-Pro-L-Leu)
Cyclo(L-leucyl-L-prolyl)
cis-Cyclo(L-Leu-L-Pro)
Cyclo(Leu-Pro)