Table 1.

Natural ocotillol-type saponins

No.	Ingredient name	R1	R2	C-20	C-24	Refs.
1	20(S)-PF11	-O-glc-rha	H	S	R	[3], [4], [5], [6], [7], [8]
2	20(R)-PF11	-O-glc-rha	H	R	R	[8], [9]
3	RT2	-O-glc-xyl	H	S	R	[5], [10]
4	RT5	-O-glc	H	S	R	[8], [10], [11], [12]
5	RT4	-O-glc	H	S	S	[8], [10], [13], [14]
6	VR1	-O-glc(-Ac)-rha	H	S	S	[13], [14]
7	VR2	-O-glc(-Ac)-xyl	H	S	S	[13], [14]
8	VR5	-O-glc-xyl-αrha	H	S	S	[15]
9	VR6	-O-glc(-αglc)-xyl	H	S	S	[15]
10	MR1	-O-glc-glc	H	S	S	[13], [16]
11	MR2	-O-glc-xyl	H	S	S	[5], [13], [14], [16]
12	24(S)-PF11	-O-glc-rha	H	S	S	[5], [13], [14], [17]
13	Yesanchinoside A	-O-glc(-Ac)-glc	H	S	S	[14]
14	Yesanchinoside B	-O-glc(-αglc)-glc	H	S	S	[14]
15	Yesanchinoside C	-O-glc-glc-xyl	H	S	S	[14]
16	3α-ocotillol	-OH	H	S	R	[18]

Ac, acetyl; αglc, α-d-glucopyranosyl; glc, β-d-glucopyranosyl; rha, α-l-rhamnopyranosyl; xyl, β-d-xylopyranosyl