3',4',5,7-tetra-O-benzyl-8-bromocatechin

3’,4’,5,7-tetra-O-benzyl-4β-(2-hydroxyethyloxy)catechin

[4,8']-2,3-trans-3,4-trans:2',3'-trans-octa-O-benzyl-3-O-acetyl-bi-(+)-catechin

花旗松素

5,7,3',4'-tetra-O-benzyl-4β-O-propargylcatechin