Flavonoids from Herissantia tiubae.

Figures & data

Figure 1 Flavonoids isolated from Herissantia tiubae..

Table 1.. ¹³C NMR spectroscopic data of compounds 1^a., 2^a., 3^a. and 4^b.

Atom position	1	2	3	4
2	156.1	156.0	156.8	156.3
3	138.6	138.5	138.5	137.8
4	179.3	179.3	179.5	178.9
5	149.1	148.0	150.3	147.9
6	136.1	130.4	136.5	131.0
7	152.8	148.5	153.1	149.9
8	132.8	127.1	133.3	127.6
9	144.9	145.0	145.1	144.9
10	107.5	105.1	107.8	104.2
1′	122.8	122.9	121.5	121.3
2′	130.2	130.2	130.9	130.1
3′	114.2	114.2	116.6	115.5
4′	161.8	161.8	162.1	159.8
5′	114.2	114.2	116.6	115.5
6′	130.2	130.2	130.9	130.1
OCH3-3	60.1	60.1	59.9	59.8
OCH3-6	61.1	61.0	60.9	60.5
OCH3-7	61.7	—	61.7	—
OCH3-8	62.1	61.7	61.9	61.4
OCH3-4′	55.4	55.4	—	—

^a.50 MHz in CDCl₃.

^b.50 MHz in D₃OD.

Table 2.. ¹H NMR spectroscopic data of compounds 1^a., 2^a., 3^a., and 4^b.

Atom position	1	2	3	4
2	—	—	—	—
3	—	—	—	—
4	—	—	—	—
5	—	—	—	—
6	—	—	—	—
7	—	—	—	—
8	—	—	—	—
9	—	—	—	—
10	—	—	—	—
1′	—	—	—	—
2′	8.13 (d., J. = 9.2 Hz)	8.14 (d., J. = 8.8 Hz)	8.33 (d., J. = 9.2 Hz)	7.92 (d., J. = 8.9 Hz)
3′	7.02 (d., J. = 9.2 Hz)	7.04 (d., J. = 8.8 Hz)	7.33 (d., J. = 9.2 Hz)	6.82 (d., J. = 8.9 Hz)
4′	—	—	—	—
5′	7.02 (d., J. = 9.2 Hz)	7.04 (d., J. = 8.8 Hz)	7.33 (d., J. = 9.2 Hz)	6.82 (d., J. = 8.9 Hz)
6′	8.13 (d., J. = 9.2 Hz)	8.14 (d., J. = 8.8 Hz)	8.33 (d., J. = 9.2 Hz)	7.92 (d., J. = 8.9 Hz)
OCH3-3	3.84 (s.)	3.86 (s.)	3.99 (s.)	3.66 (s.)
OCH3-6	3.92 (s.)	4.03 (s.)	3.99 (s.)	3.80 (s.)
OCH3-7	4.07 (s.)	—	4.03 (s.)	—
OCH3-8	3.92 (s.)	3.99 (s.)	4.01 (s.)	3.81 (s.)
OCH3-4′	3.87 (s.)	3.90 (s.)	—	—
OH-5	12.38 (s.)	12.61 (s.)	13.11 (s.)	12.46 (s.)
OH-7	—	6.56 (s.)	—	—
OH-4′	—	—	5.11 (s.)	—

^a.200 MHz in CDCl₃.

^b.200 MHz in D₃OD.