TABLE 5.

Chemical structures of triterpenes isolated from PVL─Part V.

	Groups	R1	R2	R3	R4	R5	R6	R7	R8	R9
	(84) 2,3,24-trihydroxyolean-12-en-28-oic acid	OH	OH	CH3	CH2OH	CH3	CH3	H	H	H
	(83) 2,3,24-trihydroxyurs-12-en-28-oic acid	OH	OH	CH3	CH2OH	CH3	H	H	CH3	H
	(42) 3β,22α-dihydroxyolean-12-en-28-oic acid	H	βOH	CH3	CH3	CH3	CH3	H	H	αOH
	(43) 3β,22α-dihydroxyurs-12-en-28-oic acid	H	βOH	CH3	CH3	CH3	H	H	CH3	αOH
(Yang et al.)	(87) 22-hydroxy-3-oxoleana-12-en-28-oic acid	H	=O	CH3	CH3	CH3	CH3	H	H	H