Table 2.

Semisynthetic 20(S)-ocotillol-type saponins

No.	Ingredient name	R1	R2	C-20	C-24	Refs.
17	ocotillol	-OH	-H	S	R	[6], [8], [12], [25], [26], [27]
18	20(S)-PGQ	-H	-glc-glc	S	S	[24]
19	20(S)-PHQ	-H	-glc	S	S	[8], [24]
20	20(S)-PDQ	-H	-H	S	S	[24], [28], [29]
21	24(S)-Ocotillol	-OH	-H	S	S	[8], [26], [27]
22	24(R)-PHQ	-H	-glc	S	R	[8]
23	24(R)-PDQ	-H	-H	S	R	[25], [28], [29]
24	24(R)-PHQ	-H	-glc-glc	S	R	[30]

glc, β-d-glucopyranosyl