Compound	R1	R2	R3	R4	R5	R6	R7	R8
1	β–OH	H	H	COOH	Me	H	H	Me
2	β–OH	H	H	COOH	H	H	Me	Me
3	β–OH	H	H	CH2OH	Me	H	H	Me
5	β–OH	OH	H	COOCH3	H	H	Me	Me
6	β–OH	OH	H	COOCH3	Me	H	H	Me
7	β–OH	OH	H	COOH	H	H	Me	Me
8	β–OH	OH	H	COOH	Me	H	H	Me
9	α–OH	OH	H	COOH	Me	H	H	Me
10	β–OH	H	H	COOH	Me	OH	H	Me
11	β–OH	OH	H	COOH	Me	OH	H	Me
12	α–OH	OH	H	COOH	Me	OH	H	Me
13	=O	H	H	COOH	Me	H	H	Me
14	=O	H	OH	COOH	Me	OH	H	Me
15	=O	OH	H	COOH	Me	OH	H	Me
17	β–trans-p-coumaroyl	OH	H	COOH	Me	OH	H	Me
18	β–cis-p-coumaroyl	OH	H	COOH	Me	OH	H	Me