Table 3.

The oleanane triterpenes isolated from Maytenus.

No.	Name	R1	R2	R3	R4	R5	R6	R7	R8	Type	Ref.
96	3β,19α-dihydroxyolean-12-en-29-oic acid	β-OH	H	H	CH3	H	α-OH	CH3	COOH	C1	[14]
97	3α,19α-dihydroxyolean-12-en-29-oic acid	α-OH	H	H	CH3	H	α-OH	CH3	COOH	C1	[14]
98	3-oxo-11α-methoxyolean-12-ene	=O	H	α-OCH3	CH3	H	H	CH3	CH3	C1	[24]
99	22α-hydroxy-29-methoxy-3β-tetradecanoate-olean-12-ene	β-COOC13H27	H	H	CH3	α-OH	H	CH3	COOMe	C1	[31]
100	Maytefolin B	-	-	-	-	-	-	-	-	C2	[44]
101	3β-peroxy-7β,25-epoxy-D:B-friedoolean-5-ene	-	-	-	-	-	-	-	-	C3	[48]
102	28-hydroxyolean-12-ene-3,11-dione	=O	H	=O	CH2OH	H	H	CH3	CH3	C1	[50]
103	6β,28-dihydroxyolean-12-ene-3,11-dione	=O	β-OH	=O	CH2OH	H	H	CH3	CH3	C1	[50]
104	3-oxo-11α-methoxyolean-12-ene-30-oic acid	=O	H	α-OCH3	CH3	H	H	COOH	CH3	C1	[51]
105	3-oxo-11α-hydroxyolean-12-ene-30-oic acid	=O	H	α-OH	CH3	H	H	COOH	CH3	C1	[51]
106	3-oxo-olean-9(11),12-diene-30-oic acid	=O	COOH	-	-	-	-	-	-	C4	[51]
107	3,4-seco-olean-4(23),12-diene-3,29-dioic acid	-	-	-	-	-	-	-	-	C5	[51]
108	3α-22β-dihydroxyolean-12-en-29-oicacid	α-OH	H	H	CH3	β-OH	H	CH3	COOH	C1	[52]
109	Olean-9 (11):12-dien-3β-ol	β-OH	CH3	-	-	-	-	-	-	C4	[53]
110	3β-Hydroxy-D:B-friedo-olean-5-ene	-	-	-	-	-	-	-	-	C6	[54]
111	19α-hydroxy-3-olean-12-en-29-oic acid	=O	H	H	CH3	H	α-OH	CH3	COOH	C1	[55]