Table 1.

Main natural sources of lupane triterpenoids.

Plant Source	Year	Extraction Medium	Compounds	Reference
Gratiola officinalis	1902	methanol	5	[32]
Vauquelinia corymbosa	1976	chloroform	5	[33]
Syzigium claviflorum	1994	methanol	5 and platanic acid	[34]
Eucalyptus globulus	2002	dichloromethane	5 and other terpenoids	[37]
Rosmarinus officinalis	2002	methanol	5	[38]
Betula platyphylla	2006	various organic solvents	5; 8	[42]
Betula—various species	2014	ethanol	8	[48]
Platanus occidentalis	2011	water and organic solvents	8	[43]
Platanus hispanica	2004	methanol	5	[44]
Souroubea sympetala	2011	carbon dioxide	5	[45]
Eucalyptus grandis x globulus	2013	supercritical carbon dioxide	5 and other terpenic acids	[46]
purchased birch bark	2015	subcritical water	5	[41]
Eucalyptus globulus	2020	hydrophobic deep eutectic solvents	5 and other terpenic acids	[47]