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. 2014 Nov 4;19(11):17862–17871. doi: 10.3390/molecules191117862
Compound R1 R2 R3 R4 R5
1 H OH H OH H
2 H OH H H OH
3 H OH H H H
4 H OMe H OH H
5 H OH Me H H
6 Me OH Me H H
7 H OMe H H H