Table 2.

Anti-proliferative activity of the isolated metabolites from the ethyl EtOAc extract of Streptomyces sp. LY1209.

Compounds	Cell Lines (IC50 μM)
	Molt 4
1	95.93 ± 2.32
2	– a
3	– a
4	– a
5	– a
6	56.23 ± 7.52
7	– a
8	– a
9	– a
10	– a
11	– a
12	0.01 ± 0.001
Doxorubicin b	0.04

^a IC₅₀ > 100 μM for 72 h; ^b positive control.