Lilium

Monocrotaline is an 11-membered macrocyclic pyrrolizidine alkaloid extracted from the seeds of Crotalaria plants. It inhibits organic cation transporters OCT-1 and OCT-2, with IC50 values of 36.8 µM and 1.8 mM, respectively. Monocrotaline exhibits antitumor activity and shows certain cytotoxicity against liver cancer cells such as HepG2. It is also commonly used to induce pulmonary arterial hypertension models in rodents.

Regaloside A is a phenylpropane derived from lily of the valley that shows DPPH free radical scavenging activity at 160 ppm.Regaloside A has anti-inflammatory activity and antidepressant activity.

Regaloside C, a glycerol glucoside isolated from the Lilium genus, exhibits notable anti-inflammatory properties.

Regaloside B, a phenylpropanoid isolated from Lilium longiflorum, exhibits anti-inflammatory activity by inhibiting the expression of iNOS (inducible nitric oxide synthase) and COX-2 (cyclooxygenase-2).

Regaloside F is a phenolic glyceroglucoside found in lily bulbs.

Galactose is a monosaccharide and hexose sugar widely present in most living cells, primarily absorbed into the bloodstream via SGLT1 and GLUT2 transporters and metabolised through the Leloir pathway. It inhibits alglucerase activity in monkey kidney CoS-1 cells, is a key component of cellular glycosylation, and plays a crucial role in neonatal neural development.

Regaloside D is a natural product isolated from Lilium Longiflorum.