Table 1. Antiparasitic Activities of Natural and Synthetic Phloroglucinols and Analogues.

compound number (this work)	IC50 (μM) Dd2 strain	compound number (ref (8))	IC50 (μM) FcB1/Columbia strain
1	0.64 ± 0.1a	2	0.75 ± 0.11
5	8.1 ± 0.8	5a	17.6 ± 4.3
6	1.7 ± 0.8	12	6 ± 0.4
7	>10	NRb
8	>20	NR
9	>10	NR
10	>20	NR
11	1.7 ± 0.4	6	7.4 ± 1.1
12	0.57 ± 0.09	7	4.4 ± 1.3
13	0.56 ± 0.07	NR
14	>20	NR
15	>20	NR
16	>20	NR
17	6.6 ± 2.4	NR
18	3.6 ± 0.8	NR

^aThis value differs from that reported in ref (2).

^bNR = not reported in ref (8).